期刊：
Journal of Physical Chemistry C,2008年112(3):747-753 ISSN：1932-7447
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Zhang, Xi; Ai, Zhihui; Jia, Falong] Cent China Normal Univ, Coll Chem, Key Lab Pesticide & Chem Biol Minist Educ, Wuhan 430079, Peoples R China.
通讯机构：
[Zhang, Lizhi] C;Cent China Normal Univ, Coll Chem, Key Lab Pesticide & Chem Biol Minist Educ, Wuhan 430079, Peoples R China.
摘要：
A general one-pot solvothermal process was explored to prepare BiOX (X = Cl, Br, I) powders by employing ethylene glycol as the solvent. The as-prepared BiOX powders were characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, UV−vis diffuse reflectance spectroscopy, and nitrogen sorption. The resulting BiOX samples were phase-pure and of hierarchical microspheres consisting of nanoplates. The band gaps of the as-prepared powders were estimated to about 3.22, 2.64, and 1.77 eV for BiOCl, BiOBr, and BiOI, respectively. On the basis of characterization results, we proposed a possible process for the growth of hierarchical BiOX nanoplate microspheres. Moreover, we evaluated their photocatalytic activities on the degradation of methyl orange and compared them with TiO2 (Degussa, P25) under UV−vis light irradiation and C-doped TiO2 under visible light (λ > 420 nm) irradiation, respectively. It was found that all the BiOX samples were photocatalytically active and BiOI exhibited excellent activity under both UV−vis and visible light irradiation. The resulting hierarchical BiOX nanoplate microspheres are very promising photocatalysts for degrading organic pollutants and other applications.
期刊：
CHEMISTRY OF MATERIALS,2007年19(25):6065-6067 ISSN：0897-4756
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi; Zhang, LZ; Yu, Chuanfang; Jia, Falong; Ai, Zhihui] Cent China Normal Univ, Minist Educ, Coll Chem, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
通讯机构：
[Zhang, Lizhi] C;Cent China Normal Univ, Minist Educ, Coll Chem, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
摘要：
A study was conducted, to demonstrate that a self-supported nanoporous gold film (NPGF) can be used for highly effective direct electro-oxidation of methanol in alkaline solution at room temperature. The self-supported NPGF electrode was fabricated through multicyclic electrochemical alloying, or dealloying of a polished gold electrode in an electrolyte composed of ZnCl 2 and benzyl alcohol (BA). It was found that the activity of NPGF was about 400 times more than that of the smooth gold electrode without decreasing after 100 cycles of activity test. Field-emission scanning electron microscopic (FESEM) images of the gold electrode after 30 cycles of alloying and dealloying in ZnCl2/BA electrolyte at 120°C revealed that the gold electrode surface had turned black. A well-defined three-dimensional nanoporous structure was also observed on the electrodes.
摘要：
For the first time nanoporous Zn and Ni particles were synthesized in dimethyl sulphoxide (DMSO) by a sonoelectrochemical method. The as-prepared samples were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen sorption. It was found that these nanopores were produced by the aggregation and/or melting of primary nanoparticles of about 4–5 nm in size under ultrasound irradiation after electrochemical reduction of metal ions. The utilization of nonaqueous solvent prevented the oxidation of these active metal nanoparticles, while the presence of poly-(vinylpyrrolidone) could inhibit the growth of the nanoparticles. This study provides a general method to continuously prepare nanoporous active metal particles from inorganic metal salts with high yields.
作者机构：
[Zhang, Lizhi; Jia, Falong; Xu, Hua; Ai, Zhihui] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.
通讯机构：
[Jia, Falong] C;Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.
摘要：
In this communication, we demonstrated that the growth and assembly of TiO2 nanorods into hierarchical spheres could be realized on soft interface between water and chloroform in one pot. The synthesis was free of any surfactants or organometallic precursors or ligands. The resulting samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and high-resolution transmission electron microscopy. We evaluated photocatalytic activity of the hierarchical rutile TiO2 nanorods spheres on degradation of rhodamine B in aqueous solution under simulated solar light. It was found that the activity of the as-prepared TiO2 nanoarchitectures was about twice that of the famous commercial photocatalyst P25. Moreover, our method could be extended to prepare a series of inorganic hierarchical architectures formed through the assembly of nanorods, nanoplates, and nanoprisms on the interface of water/chloroform. This indicates that water and chloroform can provide a general soft interface platform for the growth and assembly of inorganic hierarchical nanoarchitectures.
期刊：
Journal of Physical Chemistry C,2007年111(18):6832-6836 ISSN：1932-7447
通讯作者：
Zhang, Lizhi
作者机构：
[Zhang, Lizhi] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.;Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China.
通讯机构：
[Zhang, Lizhi] C;Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.
摘要：
In this paper, a Bi2WO6 nanoplate film electrode was prepared by a hydrothermal method, combined with a spin coating technique. A photoelectrochemical (PEC) oxidation system based on this electrode was then constructed to degrade rhodamine B (RhB) in aqueous solution under visible light (λ > 420 nm). The PEC system based on Bi2WO6 nanoplate film electrode could degrade 87.2% of RhB with concentration of 5 mg/L in 120 min, operated at low voltage and under visible light irradiation, whereas only 36.8% and 39.5% degradation of RhB were observed for electro-oxidation process (EC) and photocatalytic oxidation process (PC), respectively, operated under the same condition. These results revealed a significant synergetic effect on degrading RhB via electro-oxidation and photocatalysis under visible light irradiation. A possible mechanism for this synergetic degradation of RhB was proposed on the basis of characterization results. Meanwhile, the degradation pathway of RhB during PEC under visible light irradiation was also discussed. This study provided an effective approach for aqueous organic pollutant removal by utilizing solar light.
期刊：
Chemical Communications,2006年(19):2033-2035 ISSN：1359-7345
通讯作者：
Zhang, LZ
作者机构：
[Zhang, LZ] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Hubei, Peoples R China.;Nanjing Univ, Dept Phys, Ecomat & Renewable Energy Res Ctrr, Jiangsu 210093, Peoples R China.
通讯机构：
[Zhang, LZ] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Hubei, Peoples R China.
摘要：
Spring-like superstructures consisting of layered tin(IV) hydrogen phosphate nanodisks can be obtained via a one-pot solvothermal reaction of tin tetrachloride and phosphoric acid in ethanol. These superstructures are active anode materials for the lithium-ion battery.
