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2010年09月27日

【期刊论文】增强型电场协助光催化降解有机污染物的初步研究

刘鸿, 吴合进, 吴鸣), 谢茂松, 杨民, 孙福侠, 杜鸿章

分子催化,2000,14(4):241~242,-0001,():

-1年11月30日

摘要

A three dimensional electro assisted photocatalytic system was constituted with granular TiO2 as the photocatalyst. The photocatalydc efficiency of phenol degradation was observed to be 10% and 33.6%, respectively, for common water electrolysis and photocatalysis, while it is increased to 82.8% for the combination of them i. e., the electro assisted photocatalytic system. According to the experimental results, both water electrolysis and anode bias were considered to be responsible for the electro synergism, which may effectively provide active oxygen source and prevent further recombination of photo generated charges.

光催化, 电助协同效应, 有机物降解, TiO2, 立体电极

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2010年09月27日

【期刊论文】光电催化降解磺基水杨酸的研究

刘鸿, 冷文华, 吴合进, 成少安, 吴鸣, 张鉴清, 李文钊, 曹楚南

催化学报,2000,21(3):209~212,-0001,():

-1年11月30日

摘要

建立了以刮浆工艺制得的TiO2/Ni为工作电极、泡沫镍为对电极、饱和汞电极为参比电极的光电催化反应体系,研究了在磺基水杨酸(SSal)的光电催化降解过程中,外加电压和溶液pH值对降解速度的影响。实验发现,外加阳极偏压为700mV时,SSal能发生有效降解,降解速率受溶液pH值的影响;随着SSal降解的进行,阴极表面电阻出现较大的变化,另外还研究了SSal光电催化降解过程中的电流变化特征。

二氧化钛, 光电催化, 泡沫镍, 磺基水杨酸, 降解反应

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2010年09月27日

【期刊论文】光-Fenton试剂预处理低浓度H酸废水

刘鸿, 肖羽堂, 陈拥军, 张晶晶, 孙承林, 吴鸣

中国给水排水,2002,18(7):48~50,-0001,():

-1年11月30日

摘要

采用光-fenton试剂预处理低浓度H酸废水(COD为300~500mg/L、色度为400~600倍、pH值为4.5~5.5)的试验结果表明,在最佳预处理条件[pH值为5、FeSO4(10g/L)用量为0.5%、H2O2(3%)用量为2.2%、催化剂m-TiO2的用量为0.02%、反应时间为90min]下对COD的去除率为52.4%~62.7%,对色度的去除率>82%,废水的CODp/COD值显著提高。

Fenton试剂, 光催化氧化, H酸废水

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2010年09月27日

【期刊论文】TITANIUM DIOXIDE AS PHOTOCATALYST ON PdROUS NICKEL: ADSORPTION AND THE PHOTOCATALYTIC DEGRADATION OF SULFOSALICYLIC ACID

刘鸿, Hong Liu*, Shao’au Cheng, Jianqing Zhang, Chunan Cao

Chemosphere, Vol.38, No.2, pp.283-292, 1999,-0001,():

-1年11月30日

摘要

The commonly used photocatalyst, TiOl (anatase), has been immobilized on porous nickel using 3 wt.% polyvinyl alcohol (PVA) as the binder. The results show that sulfosalicylic acid (SSal) can be degraded on the developed catalytic system. The adsorption characteristics on TiOz-Ni system have been investigated. The observance of photocalytic degradation of SSal under pH values and initial concentrations can be explained by the adsorption behavior of SSal. The parameters of the Langmuir-Hinshelwood expression have been determined by different experimental ways and the results are satisfactory.

Titanium dioxide,, Photocatalyst,, Sulfosalicylic acid,, Immobilization,, Adsorption.,

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2010年09月27日

【期刊论文】THE GAS-PHOTOCATALYTIC DEGRADATION OF TRICHLOROETHYLENE WITHOUT WATER

刘鸿, Hong Liu, Shao’an Cheng*, Jianqing Zhang, Chunan Cao, Weichuan Jiang

Chemosphere, Vol.35, No.12, pp.2881-2889, 1997,-0001,():

-1年11月30日

摘要

The photocatalytic degradation of gaseous trichloroethylene (TCE) without water has been studied. The degradation products were determined to be CO2. HCl and Cl2, and the reaction stoichiometr\,h v was described as C2HCI3+ 2O2hv→HO2 HCI+2C0, +Cl2,. The degradation rate was found to be linear with 0.16 power of the illumination intensity. When the TC’E concentration was low (10-4mol L-1 or a little more), its degradation rate model could be considered as first order kinetics. A mechanism oi valence band hole oxidation was proposed.

Gas Photocatalysis,, Trichloroethylene., Degradation

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  • 刘鸿 邀请

    中山大学,广东

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