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题名: Photoelectrocatalytic degradation of sulfosalicylic acid and its electrochemical impedance spectroscopy investigation
作者: Liu, H;  Cheng, SA;  Wu, M;  Wu, HJ;  Zhang, JQ;  Li, WH;  Cao, CN
刊名: JOURNAL OF PHYSICAL CHEMISTRY A
发表日期: 2000-08-03
DOI: 10.1021/jp000171q
卷: 104, 期:30, 页:7016-7020
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Physics
英文摘要: A three-electrode system composed of TiO2/Ni as the working electrode, porous nickel as the counter electrode, and saturated calomel electrode (SCE) as the reference electrode was used for the photoelectrocatalytic degradation of organic compounds. The photoelectrocatalytic degradation of sulfosalicylic acid (SSal) under anodic bias potential was investigated. It is shown that SSal can be degraded effectively as the external potential is increased up to 700 mV (vs SCE). The characteristics by electrochemical impedance spectroscopy (EIS) of the photoelectrocatalytic degradation of sulfosalicylic acid (SSal) was also investigated. It is shown from the EIS that the photoelectrocatalytic degradation appears to be a simple reaction on the electrode surf-ace, suggesting that only one step of charge transfer is involved in the electrode process. The value of the resistance of charge transfer for the photoelectrocatalytic reaction of SSal manifests itself not only in the reaction rate, but also in the separation efficiency of the photogenerated electron-hale pairs. The separation efficiency of the electron-hole pairs under N-2 atmosphere is higher than that under Oz atmosphere.
关键词[WOS]: PHOTOCATALYTIC DEGRADATION ;  ASSISTED PHOTOCATALYSIS ;  ELECTRODES ;  WATER ;  4-CHLOROPHENOL ;  PHOTOLYSIS ;  FILMS
语种: 英语
WOS记录号: WOS:000088522600016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138710
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China

Recommended Citation:
Liu, H,Cheng, SA,Wu, M,et al. Photoelectrocatalytic degradation of sulfosalicylic acid and its electrochemical impedance spectroscopy investigation[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2000,104(30):7016-7020.
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