6 结论及展望
研究表明，半导体气相光催化反应是一种理想的污染治理技术，在环境监测和污染防治领域有着越来越广阔的应用前景。
尚须解决的问题有：a、建立一个统一的标准以便于进行比较和评价(如催化剂反应活性的评价和反应机理的研究)；b、反应机理的进一步探讨；c、反应动力学的研究，尤其是水蒸气和氧气的吸附、对反应的影响以及作用机理；d、拓宽催化剂的光响应范围，使反应能在更温和的条件下进行(如在日光照射下进行反应)；e、反应器的改进和反应条件的优化，做到节能降耗，并便于放大和在实际中的应用。
7 参考文献
[1] Hoffmann M R,Martin S T,Wonyong Choi et al. Environmental Application of Semiconductor Photocatalysis.Chem.Rev.,1995,95(1):69-96
[2] Peral J,Domenech X and Ollis D F.Hetergeneous Photocatalysis for Purification,Decontamination and Deodorization of Air. J.Chem.Technol.Biotechnol.,1997,70:117-140
[3] Dibble L A and Raupp G B.Kinetics of the Gas-solid Hetergeneous Photocatalytic Oxidation of TCE by near UV Illuminated Titannium dioxide.J.Catal.Letters,1990,4:345-348
[4] Driessen M D and GrassianV H. Photooxidation of TCE on Pt/TiO2.J.Phys.Chem.,B 1998,102:1418-1423
[5] 孙奉玉，吴鸣，李文钊等.二氧化钛的尺寸与光催化活性的关系.催化学报,1998,19(3):229-233
[6] Choi C,Termin A and Hoffmann M R.The Role of Metal Ion Dopants in Quanyum-sized TiO2.J.Phys.Chem.,1994,98(51):13669-13679
[7] 张彭义，余刚，蒋展鹏.半导体光催化剂及其改性技术进展.环境科学进展,1997,5(3):1-10
[8] Phillips L A and Raupp G B.Infrared Spectroscopic Investigation of Gas-solid Hetergeneous Photocatalytic Oxidation of TCE.J.Mol.Catal.,1992,77:297-311
[9] Anderson M A,Nishida S Y and Cervera-March S. Photodegradation of TCE in the Gas Phase Using TiO2 Porous Ceramic Membrane.Photocatalytic Purification and Treatment of Water and Air.Elsevier Science Publishers B.V.,1993:405-420
[10] Jacoby W A,Nimols M R,Blake D M et al.Direct Mass Spectrometric Studies of the Destruction of Harzardous Wastes.Environ.Sci.Technol.,1993,27:732-740
[11] Yamazaki-Nishida S,Fu Xianzhi,Anderson M A et al.Chlorinated Byproducts from the Photoassisted Catalytic Oxidation of TCE and TeCE in the Gas Phase Using Porous TiO2 Pellets.J. Photochem. Photobiol. A:Chem.,1996,97:175-179
[12] Fan Jingfu and Yates J T.Mechanism of Photooxidation of TCE on TiO2:Detection of Intermediates by IR.J.Am.Chem.Soc.,1996,118:4686-4692
[13] Driessen M D,Goodmann A L,Miller T M et al.Gas-Phase Photooxidation of TCE on TiO2 and ZnO.J.Phys.Chem.,B 1998,102:549-556
[14] Song-Jong Hwang,Petucci C and Raftery D.In Situ Solid-State NMR Studies of TCE Photocatalysis:Formation and Characterization of Surface-Bound.J.Am.Chem.Soc.,1998,120:4388-4397
[15] Larson S A. and Falconer J L. Characterization of TiO2 Photocatalysts used in TCE Oxidation. Appl.Catal.B:Environ.,1994,4:325-342
[16] Bickley R I and Stone F S.Photoadsorption and Photocatalysis at Rutile Surfaces. J. Catal.,1973,31:389-397
[17] Boonstra A H and Mutsaers C A. Relation betweem the Photoadsorption of Oxygen and the Number of Hydroxyl Group on a Titanium Dioxide Surface.J.Phys.Chem.,1975,79(16):1694-1698
[18] Chunghsuang Hung and Marinas B J.Role of Water in the Photocatalytic Degradation of TCE Vapor on TiO