作者机构：
[Zhang, Lizhi; Li, Jie; Yu, Ying] Cent China Normal Univ, Coll Chem, Inst Environm Chem, Key Lab Pesticide & Chem Biol,Minist Educ, Wuhan 430079, Peoples R China.;[Li, Jie; Yu, Ying] Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.
通讯机构：
[Zhang, Lizhi] C;Cent China Normal Univ, Coll Chem, Inst Environm Chem, Key Lab Pesticide & Chem Biol,Minist Educ, Wuhan 430079, Peoples R China.
摘要：
In recent years, layered bismuth oxyhalide nanomaterials have received more and more interest as promising photocatalysts because their unique layered structures endow them with fascinating physicochemical properties; thus, they have great potential photocatalytic applications for environment remediation and energy harvesting. In this article, we explore the synthesis strategies and growth mechanisms of layered bismuth oxyhalide nanomaterials, and propose design principles of tailoring a layered configuration to control the nanoarchitectures for high efficient photocatalysis. Subsequently, we focus on their layered structure dependent properties, including pH-related crystal facet exposure and phase transformation, facet-dependent photoactivity and molecular oxygen activation pathways, so as to clarify the origin of the layered structure dependent photoreactivity. Furthermore, we summarize various strategies for modulating the composition and arrangement of layered structures to enhance the photoactivity of nanostructured bismuth oxyhalides via internal electric field tuning, dehalogenation effect, surface functionalization, doping, plasmon modification, and heterojunction construction, which may offer efficient guidance for the design and construction of high-performance bismuth oxyhalide-based photocatalysis systems. Finally, we highlight some crucial issues in engineering the layered-structure mediated properties of bismuth oxyhalide photocatalysts and provide tentative suggestions for future research on increasing their photocatalytic performance.
作者：
Abdulkarem, A. M.;Aref, A. A.;Abdulhabeeb, A.;Li, Yan-Fang;Yu, Ying*
期刊：
Journal of Alloys and Compounds,2013年560:132-141 ISSN：0925-8388
通讯作者：
Yu, Ying
作者机构：
[Li, Yan-Fang; Abdulkarem, A. M.; Abdulhabeeb, A.; Yu, Ying; Aref, A. A.] Cent China Normal Univ, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.
通讯机构：
[Yu, Ying] C;Cent China Normal Univ, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.
关键词：
Chemical synthesis;Nanostructures;Semiconductors
作者：
Abdulkarem, A. M.;Elssfah, E. M.;Yan, Nan-Nan;Demissie, G.;Yu, Ying*
期刊：
Journal of Physics and Chemistry of Solids,2013年74(4):647-652 ISSN：0022-3697
通讯作者：
Yu, Ying
作者机构：
[Demissie, G.; Abdulkarem, A. M.; Yu, Ying; Elssfah, E. M.; Yan, Nan-Nan] Cent China Normal Univ, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.
通讯机构：
[Yu, Ying] C;Cent China Normal Univ, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.
关键词：
A. Nanostructures;B. Chemical synthesis;D. Optical properties
摘要：
In doped CdS has been prepared by simple hydrothermal method and characterized by X-ray diffraction, scanning electron microscopy, UV–vis spectrometer, and X-ray photoelectron spectroscopy techniques. The photocatalytic activity of the prepared samples was tested by Rhodamine B degradation under simulated solar light with the comparison of pure CdS sample. The results show that all the prepared samples have fine crystallinity, and In3+/Cd2+ molar ratio greatly affects the morphology and photocatalytic activity of the samples. In doped CdS reveals enhanced photocatalytic activity compared with pure CdS. As for the photocatalytic mechanism of Rh-B over the prepared sample, hole and electron are responsible for the photocatalytic degradation and OH does not have strong contribution. So, hole and electron may not get converted to OH for Rh-B degradation. The as-prepared nanostructure samples may have application potential for environmental purification due to their high photocatalytic activity.
作者机构：
[Li-Li Yan; Xiang-Jun Xia; Xin Ba; Sheng Huang; Ying Yu] Institute of Nanoscience and Nanotechnology,Central China Normal University,Wuhan 430079,China;[Xi Li] Department of Environmental Science and Engineering,Fudan University,Shanghai 200433,China
会议名称：
第五届世界氢能技术大会(WHTC2013)
会议时间：
2013-9-25
会议地点：
上海
会议主办单位：
中国可再生能源学会
会议论文集名称：
第五届世界氢能技术大会(WHTC2013)论文集
摘要：
How to take advantage of CO2 has been one of the main issues to be addressed around the world.Although there are many methods to convert CO2 to organic fuel,the efficiency is still not high enough for practical application.Herein,we have accomplished better conversion of CO2 by the combination of metal electrode and semiconductor thin film responsive to visible light.
期刊：
Journal of Physical Chemistry C,2012年116(16):9078-9084 ISSN：1932-7447
通讯作者：
Yu, Ying
作者机构：
[Yang, Fan; Huang, Sheng; Yu, Ying; Yan, Nan-Nan] Cent China Normal Univ, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.;[Yang, Fan] Wuhan Text Univ, Sch Elect & Elect Engn, Wuhan 430073, Peoples R China.;[Sun, Qiang] Zhengzhou Univ, Sch Phys & Engn, Zhengzhou 450001, Peoples R China.;[Zhang, Li-Zhi] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China.
通讯机构：
[Yu, Ying] C;Cent China Normal Univ, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.
摘要：
Zn-doped CdS nanoarchitectures with different Zn content are synthesized by a simple hydrothermal method with water as the only solvent. The prepared samples are characterized by X-ray powder diffraction, scanning electron microscopy, UV–vis diffuse reflectance spectra, Brunauer–Emmett–Teller measurement, and X-ray photoelectron spectroscopy, while the photocatalytic activities are tested by photocatalytic degradation of rhodamine-B under visible-light irradiation. The results show that CdS with small amount of Zn doping can lead to an enhanced photocatalytic activity. Zn-doped CdS sample derived at 160 °C for 12 h with the molar ratio of Zn/Cd = 1:10 exhibits the best photocatalytic activity, which is much higher than that of pure CdS. Moreover, there is almost no loss of photocatalytic activity after four cycles of repeated experiments. So, Zn2+ doping indeed improves the photocatalytic activity and stability of CdS. Theoretical calculation indicates that Zn doping into a CdS crystal lattice can result in the shift of the valence band of CdS to a positive direction. It may lead to its higher oxidative ability than pure CdS, which is important for organic pollutant degradation under visible-light irradiation. Furthermore, the low formation energy for Zn-doped CdS systems demonstrates that the stability of CdS with Zn2+ doping can be improved. Experimentally and theoretically, this study will be useful for the improvement of photocatalytic activity and stability of CdS through the method of metal ion doping.
期刊：
International Journal of Photoenergy,2012年2012:- ISSN：1110-662X
通讯作者：
Yu, Ying
作者机构：
[Li, Yan-Fang; Li, Jia-Lin; Nassoko, Douga; Yu, Ying] Cent China Normal Univ, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.;[Li, Xi] Jiangsu Huannengtong Environm Protect Co Ltd, Zhenjiang 212006, Peoples R China.;[Li, Xi] Zhenjiang King Lithium Cell Co Ltd, Zhenjiang 212006, Peoples R China.
通讯机构：
[Yu, Ying] C;Cent China Normal Univ, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China.
摘要：
Titanium dioxide (TiO2) doped with neodymium (Nd), one rare earth element, has been synthesized by a sol-gel method for the photocatalytic degradation of rhodamine-B under visible light. The prepared samples are characterized by X-ray diffractometer, Raman spectroscopy, UV-Vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, and Brunauer-Emmett-Teller measurement. The results indicate that the prepared samples have anatase and brookite phases. Additionally, Nd as Nd3+ may enter into the lattice of TiO2 and the presence of Nd3+ substantially enhances the photocatalytic activity of TiO2 under visible light. In order to further explore the mechanism of photocatalytic degradation of organic pollutant, photoluminescence spectrometer and scavenger addition method have been employed. It is found that hydroxide radicals produced by Nd-doped TiO2 under visible light are one of reactive species for Rh-B degradation and photogenerated electrons are mainly responsible for the formation of the reactive species.
摘要：
A new way to dope TiO2 nanoparticles by using ethylene-diaminetetraacetic acid (EDTA) as N source is introduced here. The nitrogen doped titanium oxide was successfully synthesized through an EDTA modified sol–gel process. The prepared samples were characterized by scanning electronic microscopy, X-ray diffractometer, Raman spectroscopy, UV–vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, and Brunauer–Emmett–Teller measurement. Their photocatalytic activities were examined by the degradation of organic pollutants such as rhodamine-B and benzene in comparison with those of N-doped TiO2 with NH3 flow as N source under visible light (λ > 420 nm) irradiation. The results show that through the simple sol–gel process, nitrogen can be incorporated into crystal lattice of TiO2, leading to its response to visible light. With the presence of EDTA, the surface area of the prepared samples becomes larger, pore size smaller, and pore size distribution narrower. Additionally, the prepared N-doped TiO2 samples has better photocatalytic activity for organic compound degradation than that prepared with NH3 flow and there is an optimized N doping amount. The reason for the enhanced photocatalytic activity is discussed in detail. To the best of our knowledge, it is first time to report that N-doped TiO2 nanoparticles can have high enough activity for benzene degradation.
