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[1] Rong Fei, Gu Linjuan, Qiu Yejing, et al. Phenol degradation by anodic oxidationon boron-doped diamond electrode combining TiO2 Photocatalysis [J]. Journal of Southeast University (English Edition), 2010, 26 (3): 421-425. [doi:10.3969/j.issn.1003-7985.2010.03.010]
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Phenol degradation by anodic oxidationon boron-doped diamond electrode combining TiO2 Photocatalysis()
掺硼金刚石电极结合二氧化钛光催化阳极氧化降解苯酚
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
26
Issue:
2010 3
Page:
421-425
Research Field:
Chemistry and Chemical Engineering
Publishing date:
2010-09-30

Info

Title:
Phenol degradation by anodic oxidationon boron-doped diamond electrode combining TiO2 Photocatalysis
掺硼金刚石电极结合二氧化钛光催化阳极氧化降解苯酚
Author(s):
Rong Fei1;  3;  Gu Linjuan1;  3;  Qiu Yejing2;  3;  Fu Degang1;  3;  Wu Wei2;  3
1School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
2School of Public Health, Southeast University, Nanjing 210009, China
3Suzhou Key Laboratory of Environment and Bio
戎非1;  3;  顾林娟1;  3;  邱烨静2;  3;  付德刚1;  3;  吴巍2;  3
1东南大学生物科学与医学工程学院, 南京 210096; 2东南大学公共卫生学院, 南京 210009; 3苏州市环境与生物安全重点实验室, 苏州 215123
Keywords:
boron-doped diamond(BDD);  anodic oxidation;  titanium dioxide;  phenol
掺硼金刚石;  阳极氧化;  二氧化钛;  苯酚
PACS:
TQ150.9
DOI:
10.3969/j.issn.1003-7985.2010.03.010
Abstract:
Boron-doped diamond(BDD)electrocatalysis is combined with photocatalysis using titanium dioxide(TiO2)as a catalyst to improve pollutant-oxidation efficiency. Phenol solution is chosen as model wastewater. Different methods involving BDD and/or TiO2 during the degradation processes are compared. Parameters such as the currency density and initial concentration are varied in order to determine their effects on the oxidation process. Moreover, the degradation kinetics of phenol is experimentally studied. The results reveal the superiority of series combination of BDD and TiO2, especially the treatment process of electrocatalysis and succedent photocatalysis, and the optimum working currency density for electrocatalysis is 25.48 mA/cm2. The removal rate decreases with the increase in the initial phenol concentration and the degradation reaction follows quasi-first-order kinetics equation.
采用二氧化钛光催化结合掺硼金刚石电催化来提高污染物氧化效率.以苯酚作为模型废水污染物, 分别比较了采用BDD电催化和TiO2光催化以及两者结合方法的降解过程, 研究了电流密度和初始浓度等条件对降解效果的影响, 并进行了反应动力学讨论.实验结果表明:与单独处理相比, BDD和TiO2组合处理方法拥有较优的苯酚去除效果, 尤其是先电解后光催化的方式, 其最优工作电流密度为25.48 mA/cm2, 并且随着苯酚初始浓度增加, 去除率随之下降.动力学研究表明反应符合准一级动力学方程.

References:

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Memo

Memo:
Biographies: Rong Fei(1977—), male, doctor, lecturer; Wu Wei(corresponding author), male, doctor, professor, weiwu-cs@sohu.com.
Foundation items: The Key Project of Chinese Ministry of Education(No.108601), Major Projects of National Water Pollution Control and Management Technology(No.2009ZX07101-011), Specialized Research Fund for the Doctoral Program of Higher Education(No.20060286010).
Citation: Rong Fei, Gu Linjuan, Qiu Yejing, et al.Phenol degradation by anodic oxidation on boron-doped diamond electrode combining TiO2 Photocatalysis[J].Journal of Southeast University(English Edition), 2010, 26(3):421-425.
Last Update: 2010-09-20