您当前所在位置: 首页 > 学者
在线提示

恭喜!关注成功

在线提示

确认取消关注该学者?

邀请同行关闭

只需输入对方姓名和电子邮箱,就可以邀请你的同行加入中国科技论文在线。

真实姓名:

电子邮件:

尊敬的

我诚挚的邀请你加入中国科技论文在线,点击

链接,进入网站进行注册。

添加个性化留言

已为您找到该学者14条结果 成果回收站

上传时间

2009年04月28日

【期刊论文】TREATMENT OF DYE WASTEWATER CONTAINING ACID ORANGE II USING A CELL WITH THREE-PHASE THREE-DIMENSIONAL ELECTRODE

熊亚, YA XIONG, *, PETER J. STRUNK, , HONGYUN XIA, XIHAI ZHU and HANS T. KARLSSON

Wat. Res. Vol. 35, No.17, pp. 4226-4230, 2001,-0001,():

-1年11月30日

摘要

The removal of color and chemical oxygen demand (COD) from simulated dye wastewater containing Acid Orange II was experimentally investigated using coagulation-electrooxidation. Two kinds of coagulation methods, ferrous-mediated coagulation and electrocoagulation were tested as pretreatment. The electrooxidation was carried out in a cell with a three-phase three-dimensional electrode using granular activated carbon as particle electrodes. Particular attention was paid to probe the effect of cell voltage, airflow rate, solution conductivity and treatment time on the electrochemical treatment efficiency. The experimental results showed that the coagulation-electrooxidation process could efficiently remove the color and the COD from the simulated dye wastewater. The overall COD and color removal efficiencies reached as high as 99% and 87%, respectively, by ferrous coagulation (molar rate of Fe(II)/dye: 0.5) and 30-min electrolysis (cell voltage: 20.0V and airflow: 0.1m3 h-1).

electrochemistry,, three-dimensional electrode,, wastewater,, dye,, Acid Orange Ⅱ

上传时间

2009年04月28日

【期刊论文】Feasibility study of photoelectrochemical degradation of methylene blue with three-dimensional electrode-photocatalytic reactor

熊亚, Tai-Cheng An *, Xi-Hai Zhu, Ya Xiong *

Chemosphere 46(2002)897-903,-0001,():

-1年11月30日

摘要

The photoelectrochemical degradation of methylene blue in aqueous solution was investigated with three-dimensional electrode-photocatalytic reactor. It was found that the methylene blue could be degraded more efficiently by photoelectrochemical process than by photocatalytic oxidation or electrochemical oxidation alone. The decolorization efficiency and COD reduction were 95% and 87% for a photoelectrochemical process, respectively, while they were only 78% and 68% for a single electrochemical process and 89% and 71% for a single photochemical process. The TOC reduction of the former also reached as high as about 81% within a reaction time of 30.0 min. And these degradation reactions conformed to pseudo-first-order kinetics.

Electrochemical oxidation, Photocatalyitc oxidation, Photoelectrochemical degradation, Methylene blue, Wastewater treatment, Three-dimensional electrodes

上传时间

2009年04月28日

【期刊论文】Purification and Characterization of a Dimethoate-Degrading Enzyme of Aspergillus niger ZHY256, Isolated from Sewage

熊亚, YU-HUAN LIU, * YING-CHENG CHUNG, AND YA XIONG

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, Aug. 2001, p.3746-3749,-0001,():

-1年11月30日

摘要

A dimethoate-degrading enzyme from Aspergillus niger ZHY256 was purified to homogeneity with a specific activity of 227.6 U/mg of protein. The molecular mass of the purified enzyme was estimated to be 66 kDa by gel filtration and 67 kDa by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The isoelectric point was found to be 5.4, and the enzyme activity was optimal at 50℃ and pH 7.0. The activity was inhibited by most of the metal ions and reagents, while it was induced by Cu21. The Michaelis constant (Km) and Vmax for dimethoate were 1.25 mM and 292 mmol min21 mg of protein21, respectively.

上传时间

2009年04月28日

【期刊论文】Synthesis, DNA-binding and DNA-mediated luminescence quenching of Ru(Ⅱ) polypyridine Complexes

熊亚, Ya Xiong, Liang-Nian Ji *

Coordination Chemistry Reviews 185-186(1999)711-733,-0001,():

-1年11月30日

摘要

The aim of this paper is to report the recent laboratory work on the synthesis of novel Ru(Ⅱ) polypyridine complexes and the studies of their interaction with DNA. The first part describes the syntheses and crystal structures of several novel polypyridine ligands containing imidazole or Schiff base moiety and their Ru(Ⅱ) complexes. The second part focuses on the influences of the shape, size and substitute groups of intercalative ligands and co-ligands on the binding modes, intensities and enantioselectivities of the complexes to DNA. The interactions of Ru(Ⅱ) complexes to different native DNAs are also compared. Certain regularity between the selection of a particular binding mode and the structure of complexes and:or DNA was observed. The final part of the paper reports the preliminary studies on a new DNA-mediated luminescence quenching assembly. The experimental results seem to support the notion that the p-stacked bases of DNA polymer maybe offer a pathway for electron transfer.

Ru(, Ⅱ), complex, Polypyridine, DNA, Synthesis, Luminescence

上传时间

2009年04月28日

【期刊论文】Photoelectrochemical performance of Ag–TiO2/ITO film and photoelectrocatalytic activity towards the oxidation of organic pollutants

熊亚, Chun Hea, b, Ya Xiong a, ∗, Jian Chenc, Changhong Zhaa, Xihai Zhua

Journal of Photochemistry and Photobiology A: Chemistry 157(2003)71-79,-0001,():

-1年11月30日

摘要

Ag-TiO2 composite film was supported on indium–tin oxide glass (ITO) by a dip-coating and subsequent photodeposition procedure. The composite film was characterised by UV-Vis diffuse reflectance spectra, X-ray reflection diffraction (XRD) spectra, scanning electron microscope (SEM) and photoelectrochemical measurement. Itwas used as a photoanode in a two-compartment photoelectrochemical cell to investigate the feasibility of a hybrid technology of Ag deposition combined with the application of an external electric field. The experimental results show that the combination has an apparent additive effect with respect to suppressing the recombination between the photogenerated charge carriers and enhancing the photoelectrocatalytic (PEC) oxidation of formic acid. A primary approach to a pulse PEC technology presents the possibility that the Ag-TiO2/ITO film electrode is performed at an anodic bias over the oxidation potential of the deposited Ag.

Photoelectrochemistry, Photocatalysis, Ag deposition, TiO2, Formic acid

合作学者

  • 熊亚 邀请

    中山大学,广东

    尚未开通主页