Deactivation and regeneration of ZnO and TiO2 nanoparticles in the gas phase photocatalytic oxidation of n-C7H16 or SO2
作者： Jing Liqiang , Xin Baifu , Yuan Fulong , Wang Baiqi , Shi Keying
DOI: 10.1016/J.APCATA.2004.07.019
关键词:
摘要: Abstract In this paper, we examined the lifetimes of made-in-home ZnO and TiO 2 nanoparticles in gas phase photocatalytic oxidation n -C 7 H 16 or SO , especially investigated deactivation mechanism by utilizing surface photovoltage spectrum (SPS) X-Ray photoelectron spectroscopy (XPS) testing techniques considering semiconductor chemical properties. The results showed that could almost be deactivated while keep most its activity. both deactivated. mainly resulted from conduction type change N-type before reaction to P-type after because adsorption products such as O, CO 3 on photocatalyst surface. addition, activity regenerated a nearly full extent washing drying.
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sci-hub.se 参考文章(16)
Liqiang Jing, Zili Xu, Xiaojun Sun, Jing Shang, Weimin Cai, The surface properties and photocatalytic activities of ZnO ultrafine particles Applied Surface Science. ,vol. 180, pp. 308- 314 ,(2001) , 10.1016/S0169-4332(01)00365-8
Zili Xu, Jing Shang, Chunming Liu, Chunli Kang, Haichen Guo, Yaoguo Du, The preparation and characterization of TiO2 ultrafine particles Materials Science and Engineering B-advanced Functional Solid-state Materials. ,vol. 63, pp. 211- 214 ,(1999) , 10.1016/S0921-5107(99)00084-7
E. Pelizzetti, C. Minero, Mechanism of the photo-oxidative degradation of organic pollutants over TiO2 particles Electrochimica Acta. ,vol. 38, pp. 47- 55 ,(1993) , 10.1016/0013-4686(93)80009-O
V. I. Makarov, G. I. Skubnevskaya, N. M. Bazhin, Studies of the photochemical reactions of sulfur dioxide with pentane in the presence of nitrogen oxide International Journal of Chemical Kinetics. ,vol. 13, pp. 231- 243 ,(1981) , 10.1002/KIN.550130303
M Litter, Heterogeneous photocatalysis: Transition metal ions in photocatalytic systems Applied Catalysis B-environmental. ,vol. 23, pp. 89- 114 ,(1999) , 10.1016/S0926-3373(99)00069-7
David F. Ollis, Ezio Pelizzetti, Nick Serpone, Photocatalyzed destruction of water contaminants Environmental Science & Technology. ,vol. 25, pp. 1522- 1529 ,(1991) , 10.1021/ES00021A001
Jing Liqiang, Sun Xiaojun, Cai Weimin, Xu Zili, Du Yaoguo, Fu Honggang, The preparation and characterization of nanoparticle TiO2/Ti films and their photocatalytic activity Journal of Physics and Chemistry of Solids. ,vol. 64, pp. 615- 623 ,(2003) , 10.1016/S0022-3697(02)00362-1
George A. Parks, The Isoelectric Points of Solid Oxides, Solid Hydroxides, and Aqueous Hydroxo Complex Systems Chemical Reviews. ,vol. 65, pp. 177- 198 ,(1965) , 10.1021/CR60234A002
Andrew Mills, Richard H. Davies, David Worsley, Water purification by semiconductor photocatalysis Chemical Society Reviews. ,vol. 22, pp. 417- 425 ,(1993) , 10.1039/CS9932200417
Leeor Kronik, Yoram Shapira, Surface photovoltage phenomena: theory, experiment, and applications Surface Science Reports. ,vol. 37, pp. 1- 206 ,(1999) , 10.1016/S0167-5729(99)00002-3