A Photocatalytic Electrode with TiO2 Immobillized on the New Supporter

doi:10.7517/j.issn.1674-0475.2004.03.161

Abstract

Abstract: A photocatalytic electrode with TiO₂ immobillized on the new supporter was reported.The new supporter which was prepared using carbon and polytetrafluoroethylene (PTFE) has the function of electrogenerating H₂O₂.Under 15 mA/cm²,the photocatalytic electrode not only had the current efficiency of synthesizing H₂O₂ of 82%,but its potential (about 0.02 V(SCE) made a TiO₂ on the supporter obtain +0.47 V anodic bia (VS.flat band potential)which was very profitable for increasing efficiency of photocatalytic reaction.So,in a photo-reactor with the photocatalytic electrode,mineralization rate of the organic compounds was greatly enhanced due to joint effect of the homogeneous oxidation of the organic moleculars by ·OH from photodissociation of H₂O₂ in the solution(oxidation of photochemistry)and heterogeneous oxidation by holes at TiO₂ (Photocatalytic oxidation).

Key words: photocatalytic electrode, TiO₂ supporter, degradation, benzoic acid

CLC Number:

CHEN Nian-you, CAI Nai-cai, WANG Yi, WANG E-feng. A Photocatalytic Electrode with TiO₂ Immobillized on the New Supporter[J]. Imaging Science and Photochemistry, 2004, 22(3): 161-168.

References

[1] Hoffmann M R, Martin S T, Choi W, et al.Environmental application of semiconductor photocatalysis [J].Chem.Rev., 1995,95: 69-96.
[2] Pichat P.Photocatalytic degradation of aromatic and alicyclic pollutants in water [J].Wat.Sci.Tech nol., 1997,35(4):73-78.
[3] Basova Y V.Removal of organic compounds from aqueous solutions by the electrochem ical reactor with fluidized-bed carbon layer[J].Electrochemistry, 2000,68 (8): 639-644.
[4] Polcaro A M, Palmas S, Renoldi F, et al.On the performance of Ti/SnO₂ and Ti/PbO₂ anodes in electrochemical degradation of 2-chlorophenol for wastewater treatment[J].Journal of Applied Electrochemistry, 1999,29:147-151.
[5] Maletzk Y, Bauer R.The photo-Fenton method-degradation of nitrogen containing organic Compounds [J].Chemosphere, 1998,37: 899-909.
[6] Brillas E,Sauleda R.Degradation of 4-chlorophenol by anodic oxidation,electro-Fenton photoelectro-Fenton,and peroxi-coagulation processes[J].J.Electrochem.Soc., 1998,145 (3): 759-765.
[7] Glaze W H, Kang J W, Chapin D H.The chemistry of water and wastewater treatment processes involving ozone, hydrogen peroxide and ultraviolet rediation[J].Ozone.Sci.Eng., 1987,9:335-341.
[8] Hofstadier K,Bauer R.New reactor design for photocatalytic wastewater treatmeut with TiO₂ immobillized on fusedsillica glass fibers: photomineralization of 4-chlorophenol[J].Environ.Sci.Technol., 1994,28: 670-674.
[9] 谢银德,陈锋,何建军,等.Photo-Fenton反应研究进展[J].感光科学与光化学,2000,18(4):357-365Xie Y D,Chen F,He J J, et al.Recent advance in Photo-Fenton reaction[J].Photographic Science and Photochemistry, 2000,18 (4): 357-365.
[10] 蔡乃才,王亚平.固定在氧扩散膜表面的TiO₂光催化膜[J]感光科学与光化学,1999,17(2):128-133Cai N C,Wang Y P.A novel TiO₂ film photocatalyst fixed on the oxygen-diffution film[J].Photographic Science and Photochemistry, 1999,17(2): 128-133.
[11] Vinodgopal K, Kamat P V.Enhanced rates of photocatalytic degradation of an azo dye using SnO₂/TiO₂ coupled semiconductor thin films[J].Environ.Sci.Technol., 1995,29:841-846.
[12] Vinodgopal K, Hotchandani S, Kamat P V.Electrochemically assisted photocatalysis.TiO₂ particulate film electrodes for photocatalysis degradation of 4-chlorophenol[J].J.Phys.Chem., 1993,97:9040-9044.

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A Photocatalytic Electrode with TiO₂ Immobillized on the New Supporter

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