自19世紀70年代發現了半導體材料光催化裂解水的現象以來，光催化氧化技術得到迅速發展。光催化技術具有催化材料易得，運行成本低，可利用太陽光作為光源等優點，是一種具有巨大潛在應用價值的污染治理技術。常用的金屬氧化物光催化劑有：Fe2O3、WO3、Cr2O3、ZnO、ZrO、TiO2等。其中TiO2來源廣、化學穩定性和催化活性高，無毒性，成為研究中使用廣泛的光催化劑之一，光催化是基于光激發半導體材料而產生的電子-空穴對，激發的電子和空穴遷移到半導體顆粒表面；如果能帶邊緣（bandedge）位置符合某種要求時，光生電子和空穴就會與吸附水或有機物發生氧化還原反應，從而實現光催化作用。本書針對光催化劑的發展和在能源領域的應用研究，做了系統總結和整理，概括為以下幾個內容：（1）光催化科學的發展進程；（2）光催化劑的制備與修飾進展；（3）光催化技術在制氫方面的研究進展；（4）光催化技術在CO2能源轉化方面的研究進展。
耿啟金，Qijin Geng, Ph.D, Associate Professor of College of Chemistry-Chemical & Environmental Engineering, Weifang University. The membership in Chemistry Association of China.
Add: College of Chemistry and Chemical Engineering, Weifang University, Shandong Province, 261061, P. R. China.
Qijin Geng was born in China in December, 1969. He gained lus bachelor degree from College of Textile Chemical Engineering in Qingdao University in 1992. The master degree of applied chemistry was obtained in Jinan University in 2004 and Ph. D degree of chemical engineering at Qingdao University of Science and Technology, Shandong Province, P. R. China in 2011. The speciality is photocatalytic decomposition of waste water and gaseous pollutants, building materials, nano-sized material preparation, and multi-phase fluidization reaction engineering.
He has published about 50 academic paper in chemical engineering and environmental science joumal, such as Industrial & Engineering Chenustry Research （IEC）, Environmental Technology （TENT）, Chemical Engineering & Technology （CET）, Research on Chemical Intermediates （Res. Chem. Intermed.）, New Building Material （NBM） and Biomedical and Environmental Science （BES）, et al. Consequently, he was invited by some journals as a reviewer, such as Journal of Environmental Management, Research on Chemical Intermediates, Separation Science and Technology, Joumal of Chemical Technology & Biotechnology, International Research Journals of Biochemistry and Bioinformatics, Chemical Engineering Journal, Journal of Environmental Sciences, Environmental Science and Pollution Research, etc.
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