作者： Li, Xin;Pan, Xinmeng;Lu, Junmiao;Zhou, Yanping;Gong, Jingming*

期刊： Biosensors and Bioelectronics,2020年158:112158 ISSN：0956-5663

通讯作者： Gong, Jingming

作者机构： [Zhou, Yanping; Lu, Junmiao; Gong, Jingming; Pan, Xinmeng; Li, Xin] Cent China Normal Univ, Coll Chem, Int Joint Res Ctr Intelligent Biosensing Technol, Minist Educ,Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.

通讯机构： [Gong, Jingming] C;Cent China Normal Univ, Coll Chem, Int Joint Res Ctr Intelligent Biosensing Technol, Minist Educ,Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.

关键词： 3D printed microreactor device;All-in-one bioassay;Dual-modal readout;Fast screening;Rapid quantitative PEC determination

摘要： An elaborated 3D printing "all-in-one" dual-modal immunoassay (3D-AIO) has been constructed for the colorimetric and photoelectrochemical (PEC) detection of alpha-fetoprotein (AFP), which integrates all step-analysis functional components (including immune/enzyme reaction, separation and detection) together using automatic microfluidics. The released ascorbic acid (AA) from the enzyme-linked immunoreactions can induce the aggregation of gold nanoparticles (AuNPs) by reducing cystine into cysteine, serving as the reporting agent of colorimetric assay. Meanwhile, the released AA induces hole-trapping of the photoactive nanostructured ZnIn(2)S(4) (ZIS), thus triggering a noticeable photocurrent enhancement at ZIS modified screen printed electrode (labeled as ZIS/SPE) slotted in PEC detection chamber. By smart controlling, the colorimetric assays exhibits a distinguishable color change once AFP contents in serum exceed its cut-off value (20ngmL(-1)), achieving fast screening and rapid identification purpose for plasma samples as negative or positive, especially in point of care (POC) analysis. And then the PEC immunoassay could be used for more accurate quantitative analysis with the detection limit as low as 0.01ngmL(-1) (S/N=3). The proposed assay offered bimodal readout for realizing both qualitative fast screening and quantitative PEC determination of AFP concentration, thereby meeting the requirements of quick and precise POC analysis. The direct detection of AFP from human blood makes it promising for on-site POC diagnostics.

语种： 英文

作者： Xie, Ning;Li, Yaqian;Lu, Yue;Gong, Jingming*;Hu, Xianluo*

期刊： ChemElectroChem,2020年7(1):105-111 ISSN：2196-0216

通讯作者： Gong, Jingming;Hu, Xianluo

作者机构： [Gong, Jingming; Xie, Ning] Cent China Normal Univ, Coll Chem, Int Joint Res Ctr Intelligent Biosensing Technol, Key Lab Pesticide & Chem Biol,Minist Educ, Wuhan 430074, Hubei, Peoples R China.;[Lu, Yue; Hu, Xianluo; Li, Yaqian] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hubei, Peoples R China.

通讯机构： [Gong, Jingming] C;[Hu, Xianluo] H;Cent China Normal Univ, Coll Chem, Int Joint Res Ctr Intelligent Biosensing Technol, Key Lab Pesticide & Chem Biol,Minist Educ, Wuhan 430074, Hubei, Peoples R China.;Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hubei, Peoples R China.

关键词： brine, batteries;LiMn2O4 nanorods;lithium recovery;low energy consumption

摘要： Nowadays the world's demand for lithium extraction has been vigorously growing, especially driven by an increased lithium use in new consumer electronic battery technologies and electric cars. Conventional methods for industrial lithium production from two major sources of underground brine deposits and mineral ore deposits are straightforward, but time-consuming from several months to a few years to complete. Therefore, efficient and low-energy-consuming lithium extraction is highly desirable. Here, we develop an attractive electrochemical method for lithium recovery with low energy consumption and high selectivity based on a cell system using LiMn2O4 nanorods. Despite the presence of other cations, lithium ions can be selectively recovered from brine with a low energy consumption of 1.76 Wh mol−1. The resulting electrochemical cell system using LiMn2O4 nanorods exhibits outstanding cyclability with a recovery capacity retention of 37.4 % over 200 cycles. The lithium extraction strategy is effective and economical, which holds great promise for future lithium recycling. © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

语种： 英文

作者： Gu, Wenling;Wang, Hengjia;Jiao, Lei;Wu, Yu;Chen, Yuxin;...

期刊： ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2020年59(9):3534-3538 ISSN：1433-7851

通讯作者： Zhu, Chengzhou;Hu, Liuyong

作者机构： [Zhu, Chengzhou; Chen, Yuxin; Gong, Jingming; Wu, Yu; Jiao, Lei; Gu, Wenling; Wang, Hengjia] Cent China Normal Univ, Int Joint Res Ctr Intelligent Biosensing Technol, Key Lab Pesticide & Chem Biol, Minist Educ,Coll Chem, Wuhan 430079, Peoples R China.;[Hu, Liuyong] Wuhan Inst Technol, Sch Mat Sci & Engn, Wuhan 430205, Peoples R China.;[Du, Dan] Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USA.

通讯机构： [Zhu, Chengzhou] C;[Hu, Liuyong] W;Cent China Normal Univ, Int Joint Res Ctr Intelligent Biosensing Technol, Key Lab Pesticide & Chem Biol, Minist Educ,Coll Chem, Wuhan 430079, Peoples R China.;Wuhan Inst Technol, Sch Mat Sci & Engn, Wuhan 430205, Peoples R China.

关键词： antioxidant capacity;electrochemiluminescence;Fe-N-C catalysts;luminol;single-atom catalysts

摘要： The traditional luminol–H2O2 electrochemiluminescence (ECL) sensing platform suffers from self-decomposition of H2O2 at room temperature, hampering its application for quantitative analysis. In this work, for the first time we employ iron single-atom catalysts (Fe-N-C SACs) as an advanced co-reactant accelerator to directly reduce the dissolved oxygen (O2) to reactive oxygen species (ROS). Owing to the unique electronic structure and catalytic activity of Fe-N-C SACs, large amounts of ROS are efficiently produced, which then react with the luminol anion radical and significantly amplify the luminol ECL emission. Under the optimum conditions, a Fe-N-C SACs–luminol ECL sensor for antioxidant capacity measurement was developed with a good linear range from 0.8 μm to 1.0 mm of Trolox. © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

语种： 英文

作者： Yuan, Yijin;Feng, Lizhen;Xie, Ning;Zhang, Lizhi*;Gong, Jingming*

期刊： Journal of Hazardous Materials,2020年388:121730 ISSN：0304-3894

通讯作者： Zhang, Lizhi;Gong, Jingming

作者机构： [Feng, Lizhen; Zhang, Lizhi; Gong, Jingming; Zhang, LZ; Gong, JM; Yuan, Yijin; Xie, Ning] Cent China Normal Univ, Coll Chem, Int Joint Res Ctr Intelligent Biosensing Technol, Key Lab Pesticide & Chem Biol,Minist Educ, Wuhan 430079, Peoples R China.

通讯机构： [Zhang, LZ; Gong, JM] C;Cent China Normal Univ, Coll Chem, Int Joint Res Ctr Intelligent Biosensing Technol, Key Lab Pesticide & Chem Biol,Minist Educ, Wuhan 430079, Peoples R China.

关键词： *Fe(3+)/Fe(2+)redox cycle;*Hydroxyl radical scavenger;*Nitrogen dioxide radicals;*PFOA;*UV-photolysis

摘要： Developing efficient methods to degrade perfluorochemicals (PFCs), an emerging class of highly recalcitrant contaminants, are urgently needed in recent years, due to their persistence, high toxicity, and resistance to most regular treatment procedures. Here, a UV-photolysis system is reported for efficient mineralization of perfluorooctanoic acid (PFOA) via irradiation of ferric nitrate aqueous solution, where in-situ generating *NO2 and the effective Fe(3+)/Fe(2+) redox cycle synergistically play great roles on rapidly mediating the mineralization of PFOA. A fast PFOA removal kinetics with first-order kinetic constants of 2.262 h(-1) is observed at initial PFOA concentration of 5 ppm (50 mL volume), reaching approximately 92 % removal efficiency within only 0.5-h irradiation. Near-stoichiometric fluoride ions liberation and high total organic carbon (TOC) removal efficiency ( approximately 100 %) further validated the capability for completely destructive removal of PFOA. A tentative pathway for PFOA destruction is proposed. This work, by UV photolysis of abundant existing iron/nitrate-based systems in natural environment, provides an economical, sustainable and highly efficient approach for complete mineralization of perfluorinated chemicals.

语种： 英文

作者： 郭丽;袁颐进;冯丽贞;张哲;龚静鸣

期刊： 环境科学学报,2020年40(6):2045-2054 ISSN：0253-2468

通讯作者： Gong, J.

作者机构： [郭丽] 湖北省生态环境监测中心站;华中师范大学化学学院;[冯丽贞; 张哲; 龚静鸣; 袁颐进] 华中师范大学

通讯机构： Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, China

关键词： 全氟辛酸;电活化;过硫酸盐;硫酸根自由基

摘要： 全氟化合物( PFCs)是一种新兴的持久性有机污染物,具有环境持久性、高毒性和难降解性,因此急需研发高效的降解方法.本文采用电化学恒电位电解法活化过硫酸盐,利用得到的具有强氧化性的SO_4~·-有效降解全氟辛酸( PFOA),考察了恒定电位值、过硫酸钠的初始浓度、溶液初始pH值和共存离子对电活化过硫酸盐降解PFOA的影响.同时,结合超高效液相色谱-三重串联四级杆质谱联用仪( UPLC-MS /MS)和气相色谱与质谱联用仪( GC-MS),对其降解的液相和气相中间产物进行探究.结果表明,在控制阴极电位为-1.8 V,初始过硫酸钠溶液浓度为200 mmol·L~(-1),初始溶液pH= 3.29,恒电位电解4 h后,PFOA去除率约达到60%.当体系中有NO_3~- 、异丙醇和过硫酸钠共存时,PFOA降解效率明显提高( 91%,4 h),当有ClO_4~-存在时PFOA去除率约达到76.8%,但HCO_3~-和Cl~-的存在会出现抑制效果.通过对降解中间产物(短链PFCAs和加氢产物)和TOC去除率( 62.5%,24 h)的监测分析,进而推断其可能的降解机理为SO_4~·-介导的Kolbe脱羧过程和羧酸逐步被加氢还原的过程.

语种： 中文

作者： Li, Xin;Lu, Junmiao;Feng, Lizhen;Zhang, Lizhi;Gong, Jingming*

期刊： Analytical Chemistry,2020年92(16):11476-11483 ISSN：0003-2700

通讯作者： Gong, Jingming

作者机构： [Feng, Lizhen; Zhang, Lizhi; Lu, Junmiao; Gong, Jingming; Li, Xin] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ,Coll Chem, Int Joint Res Ctr Intelligent Biosensing Technol, Wuhan 430079, Peoples R China.

通讯机构： [Gong, Jingming] C;Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ,Coll Chem, Int Joint Res Ctr Intelligent Biosensing Technol, Wuhan 430079, Peoples R China.

摘要： Antibiotic resistance, encoded via particular genes, has become a major global health threat and substantial burden on healthcare. Hence, the facile, low-cost, and precise detection of antibiotic resistance genes (ARGs) is crucial in the realm of human health and safety, especially multiplex sensing assays. Here, a smart pH-regulated switchable photoelectrochemical (PEC) bioassay has been created for ultrasensitive detection of two typical subtypes of penicillin resistance genes bla-CTX-M-1 (target 1, labeled as TDNA1) and bla-TEM (target 2, labeled as TDNA2), whereby pH-responsive antimony tartrate (SbT) complex-grafted silica nanospheres are ingeniously adopted as signal DNA1 tags (labeled as SDNA1-SbT@SiO2NSs). The operations of the PEC bioassay depend on the switchable dissociation of the pH-responsive SDNA1-SbT@SiO2NSs complex under the external pH stimuli, thus initiating the pH-regulated release of ions pre-embedded in sandwich-type DNA nanoassemblies. At acidic conditions, the dissociation of SDNA1 tags (ON state) triggers the release of the embedded SbO+. Under alkaline conditions, the dissociation of SDNA1 tags is inhibited (OFF state). The detection of TDNA2 was achieved via DNA hybridization-triggered metal ion release. The unwinding of the introduced hairpin T-Hg2+-T fragment, hybridized with the second anchored signal DNA (SDNA2), ignites the release of Hg2+. The released SbO+ or Hg2+ ions would trigger the formation of Sb2S3/ZnS or HgS/ZnS heterostructure through ion-exchange with the photosensitive ZnS layer, giving rise to the amplified photocurrents and eventually realizing the ultrasensitive detection of penicillin resistance genes subtypes, bla-CTX-M-1 and bla-TEM. The as-fabricated pH-regulated PEC bioassay, smartly integrating the pH-responsive intelligent unit as SDNA tags, pH-regulated release of embedded ions, and the subsequent ion-exchange-based signal amplification strategy, exhibits high sensitivity, specificity, low-cost, and ease of use for multiplex detection of ARGs. It can be successfully used for measuring bla-CTX-M-1 and bla-TEM in real E. coli plasmids, demonstrating great promise for developing a new class of genetic point-of-care devices. © 2020 American Chemical Society.

语种： 英文

作者： Wu, Yunqing;Chen, Yuxin;Zhang, Shiqin;Zhang, Lizhi;Gong, Jingming*

期刊： Analytica Chimica Acta,2019年1073:45-53 ISSN：0003-2670

通讯作者： Gong, Jingming

作者机构： [Zhang, Shiqin; Zhang, Lizhi; Chen, Yuxin; Gong, Jingming; Wu, Yunqing] Cent China Normal Univ, Int Joint Res Ctr Intelligent Biosensing Technol, Coll Chem, Key Lab Pesticide & Chem Biol,Minist Educ, Wuhan 430079, Hubei, Peoples R China.

通讯机构： [Gong, Jingming] C;Cent China Normal Univ, Int Joint Res Ctr Intelligent Biosensing Technol, Coll Chem, Key Lab Pesticide & Chem Biol,Minist Educ, Wuhan 430079, Hubei, Peoples R China.

关键词： Atrazine;Bifunctional S;Dissolved oxygen;Electrochemiluminescent bioassay;Mesoporous bicarbons;N-codoped carbon dots

摘要： A novel and ultrasensitive electrochemiluminescent (ECL) bioassay has been developed for the detection of atrazine (ATZ), whereby bifunctional S, N-codoped carbon dots (S, N-CDs) and activated mesoporous bicarbons (BCs) have been innovatively integrated to synergistically amplify the ECL signal. When endogenous dissolved O2 is used as a coreactant, its sluggish reduction hinders the enhancement of ECL intensity of the luminophore, thus restricting its further application in bioanalysis. Here, bifunctional S, N-CDs severe as not only the ECL luminophore but the coreaction accelerator of dissolved O2 to generate more intermediates to boost the coreaction without using any other coreactant and coreaction accelerator. The as-formed nanoarchitectures of BCs possess enlarged surface area as the nanocarriers. They could provide adequate active sites for immobilization of tyrosinase (Tyr), which greatly prompts the ECL bioassay applications. Such a smart integration of bifunctional S, N-CDs, activated mesoporous BCs and the enzyme inhibition reaction achieves a unique and attractive high-performance signal-on ECL bioassay, realizing ultrasensitive detection of ATZ. Under the optimal condition, this bioassay exhibits two linear ranges, from 0.0001 to 0.01 μg L−1 and 0.01–20 μg L−1 with a detection limit of 0.08 ng L−1 at signal to noise ratio of 3. The as-fabricated assay is sensitive and economical, opening a new way for the enhancement of ECL signal output and a versatile strategy for ultrasensitive ECL bioanalysis. © 2019 Elsevier B.V.

语种： 英文

作者： 龚静鸣;张文华;李芳;徐晖;周燕平;...

期刊： 大学化学,2019年34(6):26-32 ISSN：1000-8438

作者机构： 华中师范大学化学学院,武汉,430079;[万坚; 高婷娟; 龚静鸣; 熊博; 徐晖; 原弘; 李芳; 梁沛; 周燕平; 张文华] 华中师范大学

关键词： 核心素养;思维导图;分析化学

摘要： 运用“思维导图”这一教学策略,引导学生在学习过程中自发有效地对各知识点进行关联,构建完整的知识网络,进而改变学生单纯依靠“机械式”记忆的学习方法,锤炼其对知识点的凝练总结能力,培养学生的自主学习能力,实现基于核心素养培养观导向的以培养具有良好分析化学素养,具备竞争力和创新能力的高端人才培养目标。

语种： 中文

作者： Li, Xin;Yuan, Yijin;Pan, Xinmeng;Zhang, Lizhi;Gong, Jingming*

期刊： Biosensors and Bioelectronics,2019年123:7-13 ISSN：0956-5663

通讯作者： Gong, Jingming

作者机构： [Zhang, Lizhi; Gong, Jingming; Yuan, Yijin; Pan, Xinmeng; Li, Xin] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Hubei, Peoples R China.

通讯机构： [Gong, Jingming] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Hubei, Peoples R China.

关键词： Coral-like g-C(3)N(4);Metronidazole;Nanoarchitectured design;Oral medicine sample;Photoelectrochemical immunoassay

摘要： A simple, facile and sensitive photoelectrochemical (PEC) bioassay protocol for metronidazole (MNZ) detection in common oral medicine samples has been proposed under visible-light irradiation, where novel hierarchical coral-like g-C 3 N 4 nanoarchitectures (cg-C 3 N 4 ) have been first explored as PEC sensing platform. Featured with the unique nanostructures (e.g., interlaced porous network architecture, and open boundaries), the as-formed cg-C 3 N 4 nanoarchitectures not only efficiently inhibit the recombination of photogenerated electron-hole but also enable the immobilization of capture antibodies as well as the antibody-antigen binding efficiency fluently, thus amplifying the photocurrent response. This newly constructed PEC immunoassay displays excellent performance for MNZ determination with high sensitivity and selectivity. Under the optimal condition, this bioassay protocol exhibits a linear range of 0.01–100 µM with a detection limit of 0.005 µM at signal to noise ratio of 3. The resulting PEC immunoassay has been proved to be applicable for sensing MNZ in common oral medicine samples. © 2018 Elsevier B.V.

语种： 英文

作者： Li, Xin;Wang, Xinlei;Zhang, Lizhi;Gong, Jingming*

期刊： ACS SENSORS,2018年3(8):1480-1488 ISSN：2379-3694

通讯作者： Gong, Jingming

作者机构： [Zhang, Lizhi; Gong, Jingming; Wang, Xinlei; Li, Xin] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Hubei, Peoples R China.

通讯机构： [Gong, Jingming] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Hubei, Peoples R China.

关键词： photoelectrochemical immunoassay;high-throughput;bioconjugate disintegration;dopamine-grafted silica nanosphere;lysozyme

摘要： A unique split-type photoelectrochemical (PEC) immunoassay has been constructed for detection of low-abundance biocompounds (lysozyme, Lyz, used in this case) via a new trigger strategy by disintegrating bioconjugates of dopamine-grafted silica nanospheres (DA@SiO2NSs) for signal amplification. The preferred electron donor assembly of DA@SiO2NSs is first used as a molecular printboard for positioning anti-Lyz secondary antibody (Ab2) through an amide reaction. With specific immunoreactions in a high-binding microplate, a sandwich immunoassay, the DA@SiO2NSs-based bioconjugate is achieved. By initiating the disintegration of the bioconjugates via acid etching, numerous electron donors of DA are released, thus efficiently triggering hole-trapping with amplified signals obtained. The smart integration of ZnIn2S4-based heterojunctions as photoactive material, a split-type detection mode, and a new trigger strategy by disintegrating the DA@SiO2NSs-based bioconjugate offer an attractive high-throughput signal-on PEC immunoassay for detection of Lyz. Such an unusual PEC sensor exhibits an outstanding linear response to the concentration in the range between 0.002 and 500 ng mL-1, and the detection limit is as low as 0.6 ppt (S/N = 3). The as-fabricated assay is cost-effective and sensitive. It has been successfully used for measuring Lyz in real samples, which demonstrates great promise for practical applications. © Copyright 2018 American Chemical Society.

语种： 英文

作者： Li, Xin;Wang, Xinlei;Fang, Tian;Zhang, Lizhi;Gong, Jingming*

期刊： Talanta,2018年181:147-153 ISSN：0039-9140

通讯作者： Gong, Jingming

作者机构： [Zhang, Lizhi; Gong, Jingming; Wang, Xinlei; Fang, Tian; Li, Xin] Cent China Normal Univ, Coll Chem, Key Lab Pesticide & Chem Biol, Minist Educ,Inst Appl & Environm Chem, Wuhan 430079, Hubei, Peoples R China.

通讯机构： [Gong, Jingming] C;Cent China Normal Univ, Coll Chem, Key Lab Pesticide & Chem Biol, Minist Educ,Inst Appl & Environm Chem, Wuhan 430079, Hubei, Peoples R China.

关键词： Disposable sensing strip;In-situ electrodeposition;Molecularly imprinted polymer;Perfluorooctane sulfonyl fluoride;Photoelectrochemical sensor

摘要： Owing to the lack of chromophores and ionizable functional groups, it is a significant challenge to determine perfluorooctane sulfonyl fluoride (PFOSF) by traditional high-performance liquid chromatography or liquid chromatography/mass spectrometry, especially at a low concentration. In this work a unique photoelectrochemical (PEC) sensing strip has been developed for the first time for the detection of PFOSF. The sensing strip is cost effective and disposable, whereby BiOI nanoflake arrays are fabricated on a home-made screen-printed electrode through a facile one-step in-situ electrodeposition process, and then the molecule tags (i.e., molecularly imprinted polymers) for PFOSF are subsequently grafted on the surface. Benefitting from a three-dimensional interconnected framework, the as-fabricated sensing strip has a rapid response to the interfacial steric hindrance effect between the sensing platform and the target analyte of PFOSF. The elaborated PEC sensor exhibits a outstanding linear response to a concentration of PFOSF ranging from 0.05 to 500.0 ppb and a detection limit down to 0.01 ppb (S/N = 3) Furthermore, our low-cost and highly sensitive sensor has been further explored to detect PFOSF in real water samples, showing satisfactory results. © 2018 Elsevier B.V.

语种： 英文

作者： 李新;王心磊;龚静鸣

作者机构： [李新; 王心磊; 龚静鸣] 华中师范大学化学学院华中师范大学化学学院农药与化学生物学教育部重点实验室

会议名称： 中国化学会第十届全国化学生物学学术会议

会议时间： 2017-09-23

会议地点： 武汉

会议论文集名称： 中国化学会第十届全国化学生物学学术会议论文集

关键词： 溶菌酶;免疫检测;异质结;多巴胺

摘要： 目前,由于人们对健康问题,生命科学以及环境保护问题的日益关注,使得针对微量分析物的定量检测各种分析方法得到不断发展。光电化学检测技术作为一种新兴的分析检测技术,由于其具有高灵敏度、便携性以及易集成化,吸引了研究工作者们广泛的关注。基于此,如图1所示,我们将一种新颖的异质结纳米结构作为光活性物质与多巴胺嫁接的二氧化硅微球的生物结合作为信号放大单元有机结合制备出了一种分离式信号增强型的光电化学传感器用

语种： 中文

作者： Lin, Zexin;Gong, Jingming*;Fu, Ping*

期刊： Journal of Materials Science: Materials in Electronics,2017年28(5):4424-4430 ISSN：0957-4522

通讯作者： Gong, Jingming;Fu, Ping

作者机构： [Gong, Jingming; Lin, Zexin] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.;[Fu, Ping] Wuhan Inst Technol, Hubei Key Lab Plasma Chem & Adv Mat, Wuhan 430073, Peoples R China.

通讯机构： [Gong, Jingming] C;[Fu, Ping] W;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.;Wuhan Inst Technol, Hubei Key Lab Plasma Chem & Adv Mat, Wuhan 430073, Peoples R China.

关键词： Optimum Operating Temperature;Al2O3 Tube;Pure Bi2WO6;Bi2WO6 Sample;Ionize Oxygen Species

摘要： Erythrocyte-like hierarchical &alpha;-Fe<inf>2</inf>O<inf>3</inf>/Bi<inf>2</inf>WO<inf>6</inf>nanocomposites were synthesized by a simple and convenient hydrothermal method. The composites were assembled from &alpha;-Fe<inf>2</inf>O<inf>3</inf>/Bi<inf>2</inf>WO<inf>6</inf>nanoplates. The structures of &alpha;-Fe<inf>2</inf>O<inf>3</inf>/Bi<inf>2</inf>WO<inf>6</inf>nanocomposites were characterized by XRD, TEM, BET and gas sensing properties toward xylene were investigated in detailed. The sensors based on self-assembled &alpha;-Fe<inf>2</inf>O<inf>3</inf>/Bi<inf>2</inf>WO<inf>6</inf>nanoplates show much enhanced sensing performances to xylene than that of pure Bi<inf>2</inf>WO<inf>6</inf>. The sensing performance using 10&nbsp;wt% &alpha;-Fe<inf>2</inf>O<inf>3</inf>/Bi<inf>2</inf>WO<inf>6</inf>reaches the highest response (S&nbsp;=&nbsp;13.5) for the detection of 100&nbsp;ppm xylene. Significant enhancement of the response and selectivity to xylene can be attributed to the formation of heterostructure and the synergistic catalytic activity from &alpha;-Fe<inf>2</inf>O<inf>3</inf>and surface decorated WO<inf>4</inf>^2&ndash;.<br/> &copy;2016, Springer Science+Business Media New York.

语种： 英文

作者： 袁颐进;冯丽贞;张哲;龚静鸣

作者机构： [袁颐进; 冯丽贞; 张哲; 龚静鸣] 华中师范大学化学学院

会议名称： 持久性有机污染物论坛2017暨第十二届持久性有机污染物学术研讨会

会议时间： 2017-05-17

会议地点： 中国湖北武汉

摘要： <正>1.引言在过去六十年中,由于全氟化合物具有良好的疏水疏油、表面活性、稳定性等特性被广泛应用于灭火剂、清洁剂、食品包装等。研究表明,全氟化合物在环境中持久存在,并可在生物体内累积。全氟辛酸,最为之代表的全氟化合物,因对环境和人体健康有潜在危害性而备受关注。全氟辛酸具有较强的碳氟键,且与羟基自由基间的反应速率低(KOH·+PFOA≦105 M-1 s-1),因此常用于降解有机污染物的·OH等活性氧物种无法实现对其有效的降解。

语种： 中文

作者： Li, Aimin;Zhang, Zhe;Li, Peifeng;Cai, Lejuan;Zhang, Lizhi*;...

期刊： Chemosphere,2017年188(Dec.):367-374 ISSN：0045-6535

通讯作者： Zhang, Lizhi;Gong, Jingming

作者机构： [Zhang, Lizhi; Gong, Jingming; Zhang, LZ; Gong, JM; Li, Aimin; Zhang, Zhe; Li, Peifeng; Cai, Lejuan] Cent China Normal Univ, Coll Chem, Inst Appl & Environm Chem, Key Lab Pesticide & Chem Biol,Minist Educ, Wuhan 430079, Hubei, Peoples R China.

通讯机构： [Zhang, LZ; Gong, JM] C;Cent China Normal Univ, Coll Chem, Inst Appl & Environm Chem, Key Lab Pesticide & Chem Biol,Minist Educ, Wuhan 430079, Hubei, Peoples R China.

关键词： Nitrogen dioxide radicals;Photodegradation;Perfluorooctanoic acid;Nitrate;Hydroxyl radical scavenger

摘要： Effective decomposition of perfluorooctanoic acid (PFOA) has received increasing attention in recent years because of its global occurrence and resistance to most conventional treatment processes. In this study, the complete mineralization of PFOA was achieved by the UV-photolysis of nitrate aqueous solution (UV/Nitrate), where the in-situ generated nitrogen dioxide radicals (center dot NO2) efficiently mediated,the degradation of PFOA. In particular, when the twinborn hydroxyl radicals were scavenged, the production of more center dot NO2 radicals realized the complete mineralization of PFOA. DFT calculations further confirm the feasibility of PFOA removal with center dot NO2. Near-stoichiometric equivalents of fluoride released rather than the related intermediates were detected in solution after decomposition of PEOA, further demonstrating the complete degradation of PFOA. Possible PFOA degradation pathways were proposed on the basis of experimental results. This work offers an efficient strategy for the complete mineralization of per fluorinated chemicals, and also sheds light on the indispensable roles of nitrogen dioxide radicals for environmental pollutants removal. (C) 2017 Elsevier Ltd. All rights reserved.

语种： 英文

作者： Yang, Xiaomin;Li, Xin;Zhang, Lizhi;Gong, Jingming*

期刊： Biosensors and Bioelectronics,2017年92:61-67 ISSN：0956-5663

通讯作者： Gong, Jingming

作者机构： [Zhang, Lizhi; Gong, Jingming; Yang, Xiaomin; Li, Xin] Cent China Normal Univ, Minist Educ, Coll Chem, Inst Appl & Environm Chem,Key Lab Pesticide & Che, Wuhan 430079, Peoples R China.

通讯机构： [Gong, Jingming] C;Cent China Normal Univ, Minist Educ, Coll Chem, Inst Appl & Environm Chem,Key Lab Pesticide & Che, Wuhan 430079, Peoples R China.

关键词： *Electrospinning;*Electrospun template directed molecular imprinting technique;*Photoelectrochemical sensor;*Triphenyl phosphate

摘要： Triphenyl Phosphate (TPhP), as a typical model of organophosphorus flame retardants (OPFRs), has been regarded as emerging environmental contaminants of health concern. In this study, a rapid and highly sensitive visible-light-response PEC sensor has been developed for the detection of Triphenyl Phosphate (TPhP) using electrospun template directed molecularly imprinted nanofibers modified BiOI nanoflake arrays (BiOINFs) as a photoactive electrode. The molecularly imprinted electrospun nanofibers (labeled as MI-ESNFs) were carefully characterized by scanning electron microscopy (SEM), UV spectra, FTIR spectra measurements and various electrochemical techniques. Under the optimized experimental conditions, the photoelectrochemical response was linearly proportional to the logarithm value of TPhP concentrations in the range of 0.01ngmL−1 to 500ngmL−1. Meanwhile, the sensor exhibited high selectivity and stability. © 2017 Elsevier B.V.

语种： 英文

作者： Fang, Tian;Yang, Xiaomin;Zhang, Lizhi;Gong, Jingming*

期刊： Journal of Hazardous Materials,2016年312:106-113 ISSN：0304-3894

通讯作者： Gong, Jingming

作者机构： [Zhang, Lizhi; Gong, Jingming; Fang, Tian; Yang, Xiaomin] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.

通讯机构： [Gong, Jingming] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.

关键词： *Formate anion incorporated graphitic-carbon nitride;*Hexavalent chromium;*Ion imprinted polymer;*Photoelectrochemical sensor

摘要： A rapid and highly sensitive photoelectrochemical (PEC) method has been proposed for the determination of trace amounts of chromium in water samples under visible-light irradiation. Here, a unique nanostructured hybrid of formate anion incorporated graphitic carbon nitride (F-g-C<inf>3</inf>N<inf>4</inf>) is smartly integrated with a Cr(VI) ion-imprinted polymer (IIP) as a photoactive electrode (denoted as IIP@F-g-C<inf>3</inf>N<inf>4</inf>). The nanohybrid of F-g-C<inf>3</inf>N<inf>4</inf>exhibits an enhanced charge separation with substantially improved PEC responses versus g-C<inf>3</inf>N<inf>4</inf>. The newly designed IIP@F-g-C<inf>3</inf>N<inf>4</inf>PEC sensor exhibits high sensitivity and selectivity for the determination of Cr(VI) because it offers efficient photogenerated electron reduction toward Cr(VI). The PEC analysis is highly linear over Cr(VI) concentrations ranging from 0.01 to 100.00 ppb with a detection limit of 0.006 ppb (S/N = 3). Our approach can be used to detect Cr(VI), Cr(III) and the total chromium level in aqueous solution through oxidation of Cr(III) to Cr(VI) and the determination of the total chromium as Cr(VI). In practical applications, this low-cost and sensitive assay has been successfully applied for speciation determination of chromium in environmental water samples. &copy;2016 Elsevier B.V.

语种： 英文

作者： 龚静鸣;杨晓敏;张诗琴;张哲

作者机构： [龚静鸣; 杨晓敏; 张诗琴; 张哲] 华中师范大学化学学院农药与化学生物学教育部重点实验室

会议名称： 中国化学会第30届学术年会

会议时间： 2016-07-01

会议地点： 中国辽宁大连

会议论文集名称： 中国化学会第30届学术年会摘要集-第三分会：纳米传感新原理新方法

关键词： 光电化学;电致化学发光;纳米探针

摘要： 近年来,基于光电转换特性来确定待测物质浓度的方法,包括光电化学(PEC)和电致化学发光(ECL)越来越受到国际研究人员的重视。我们实验室结合自组装技术、分子印迹技术、生物酶技术及静电纺丝技术等,构建了基于卤氧铋系列纳米片阵列(BiOXNFs),Ag INPs-BiOXNFs纳米异质结及甲酸掺杂的氮化碳纳米片复合膜等为可见光响应的光电转化单元,成功制备了除草剂(2,4-D),有机磷农药(MP),全氟

语种： 中文

作者： Gong, Jingming*;Fang, Tian;Peng, Dinghua;Li, Aimin;Zhang, Lizhi

期刊： Biosensors and Bioelectronics,2015年73:256-263 ISSN：0956-5663

通讯作者： Gong, Jingming

作者机构： [Peng, Dinghua; Zhang, Lizhi; Gong, Jingming; Li, Aimin; Fang, Tian] Cent China Normal Univ, Coll Chem, Key Lab Pe Sticide & Chem Biol, Minist Educ,Inst Environm Chem, Wuhan 430079, Peoples R China.

通讯机构： [Gong, Jingming] C;Cent China Normal Univ, Coll Chem, Key Lab Pe Sticide & Chem Biol, Minist Educ,Inst Environm Chem, Wuhan 430079, Peoples R China.

关键词： Molecularly imprinted polymer;Nanohybrids;Perfluorooctanoic acid;Photoelectrochemical sensor

摘要： A rapid and ultrasensitive signal-off photoelectrochemical sensor has been developed under visible-light irradiation, for the detection of perfluorooctanoic acid (PFOA), especially low level PFOA present in environment, whereby a novel nanostructured probe made of molecularly imprinted polymer (MIP) modified AgI nanoparticles-BiOI nanoflake arrays (AgI-BiOINFs) is designed as the photoactive electrode (denoted as MIP@AgI-BiOINFs). Here, the unique nanoarchitectured hybrid of AgI-BiOINFs was first in situ synthesized via a facile successive ionic layer adsorption and reaction (SILAR) approach and then employed as a matrix to graft the recognition element of MIP. Such a newly designed PEC sensor exhibits high sensitivity and selectivity for the determination of PFOA. The PEC analysis is highly linear over the PFOA concentration ranging from 0.02 to 1000.0. ppb with a detection limit of 0.01. ppb (S/. N=3). This value obtained by using the facile PEC sensor is comparable to the results obtained by using well-established liquid chromatography-tandem mass spectrometry (LC-MS/MS). Toward practical applications, this low-cost and sensitive assay was successfully applied to measure PFOA in real water samples. © 2015 Elsevier B.V..

语种： 英文

作者： Chen, Sihua;Li, Aimin;Zhang, Lizhi;Gong, Jingming*

期刊： Analytica Chimica Acta,2015年896:68-77 ISSN：0003-2670

通讯作者： Gong, Jingming

作者机构： [Zhang, Lizhi; Gong, Jingming; Li, Aimin; Chen, Sihua] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.

通讯机构： [Gong, Jingming] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.

关键词： Electrochemiluminescence sensor;Molecularly imprinted polymer;Perfluorooctanoic acid;Ultrathin graphitic carbon nitride nanosheet

摘要： Driven by the urgent demand for the determination of low level perfluorooctanoic acid (PFOA) present in environment, a novel electrochemiluminescence (ECL) sensor has been first developed for the detection of PFOA using the molecularly imprinted polypyrrole modified two-dimensional ultrathin g-C<inf>3</inf>N<inf>4</inf>(utg-C<inf>3</inf>N<inf>4</inf>) nanosheets as a cathodic ECL emitter with S<inf>2</inf>O<inf>8</inf>^2-as coreactant. The prepared molecularly imprinted polymer (MIP) functionalized utg-C<inf>3</inf>N<inf>4</inf>nanosheets (MIP@utg-C<inf>3</inf>N<inf>4</inf>) exhibit a stable and significantly amplified ECL signal. It is found that the targets of PFOA could be efficiently oxidized by the electro-generated strong oxidants of SO<inf>4</inf>^-(from the reduction of coreactant S<inf>2</inf>O<inf>8</inf>^2-), thus leading to a low yield of the excited utg-C<inf>3</inf>N<inf>4</inf>(g-C<inf>3</inf>N<inf>4</inf>*) and finally a decrease in ECL signal. Based on this, a highly sensitive and selective MIP@utg-C<inf>3</inf>N<inf>4</inf>-based signal-off ECL sensor is developed for sensing PFOA. Such a newly designed ECL sensor exhibits highly linear over the PFOA concentration in two ranges, from 0.02 to 40.0 ng mL^-1and 50.0-400.0 ng mL^-1. The detection limit (S/N = 3) is estimated to be 0.01 ng mL^-1(i.e. 0.01 ppb), comparable to the results obtained by using well-established liquid chromatography-tandem mass spectrometry (LC-MS/MS). Toward practical applications, this low-cost and sensitive assay was successfully applied to measure PFOA in real water samples, showing fine applicability for the detection of PFOA in real samples. &copy;2015 Elsevier B.V.

语种： 英文