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A Novel Composite Electrode of Photocatalyst‐TiO 2 /C Loading on the Surface of the Air (Oxygen) Electrode
Author(s) -
Wang YuLing,
Cai NaiCai,
Wang YaPing,
Zhong JiaSheng
Publication year - 2002
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20020200403
Subject(s) - electrode , chemistry , aniline , composite number , photocatalysis , anode , clark electrode , polarization (electrochemistry) , palladium hydrogen electrode , oxygen evolution , oxygen , working electrode , quinhydrone electrode , degradation (telecommunications) , inorganic chemistry , composite material , chemical engineering , catalysis , electrochemistry , materials science , organic chemistry , electrolyte , telecommunications , computer science , engineering
The methods for preparing the H 2 O 2 generating air (oxygen) electrode and the composite electrode of photocatalyst‐TiO 2 /C loading on the surface of the air (oxygen) electrode were introduced. In the case of the composite electrode, the current efficiency of electro‐generated H 2 O 2 is higher than 80% ( J ≤ 15 mA/cm 2 ). The degradation of aniline was used as an example to measure the influence of the composite electrode and compared with the system in which the air (oxygen) electrode and the photocatalyst‐TiO 2 were separated. The results confirmed that the composite electrode played an active role on accelerating the degradation rate of aniline. According to the measurement of the polarization curves of composite electrode and TiO 2 photo anode, and of the adsorbing amount of aniline on the surface of the composite electrode, the principle of descending the recombination rate of photo‐generated electron and hole and of enhancing the oxidation rate of organic molecule was described. The mechanism about the degradation of aniline was also discussed.