标题:Progress in research of the combined adsorption-photocatalysis for the removal of volatile organic compounds
作者:Lin, Bo Tao ;Shi, Dong Mei ;Li, Tao ;Meng, Sen Kuan
作者机构:[Lin, Bo Tao ;Shi, Dong Mei ;Li, Tao ] Machine Engineering College, Shijiazhuang 050003, Hebei, China;[Meng, Sen Kuan ] School of Materials Science an 更多
会议名称:4th International Symposium on Chemical Engineering and Material Properties, ISCEMP 2014
会议日期:28 June 2014 through 29 June 2014
来源:Advanced Materials Research
出版年:2014
卷:1015
页码:540-543
DOI:10.4028/www.scientific.net/AMR.1015.540
关键词:Adsorption-photocatalysis; Immobilization methods; Volatile organic compounds
摘要:TiO2 photocatalytic technology was developed in the past two decades in air treatment because of good photocatalytic effect, non-toxic, chemical stability, low cost, reusable features, the effect use of solar energy. A new composite materials of visible light photocatalytic degradation of low concentration of volatile organic compounds were produced by use of combining the adsorbent with TiO2 photocatalytic technology. The adsorbent can enrich concentrations of volatile organic compounds on the surface of the TiO2 photocatalyst. In this paper, the mechanism of the combined adsorption-photocatalysis for the removal of volatile organic compounds and immobilization methods, principle, craft were reviewed. The characteristic of the immobilization methods was analysed. It laid the foundation for the optimizing of the immobilization methods and the improving of the photocatalytic efficiency. With the widespread use of paints,coatings,preservatives,agents and disinfectants clear the air, toxic volatile organic compounds, formaldehyde, benzene, toluene and other indoor air pollution are worsening,and cause direct harm and even cancer to people. How to remove toxic volatile organic compounds. This problem has attracted people's attention. Adsorption is a relatively mature and effective technology, but there are adsorption saturation failure, and requiring frequent regeneration, secondary pollution,even for volatile organic trace gases, this method is difficult in practice. TiO2 photocatalytic technology was developed in the past two decades in air treatment because of good photocatalytic effect, non-toxic, chemical stability, low cost, reusable features, the effect use of solar energy. However, when the concentrations of volatile organic gases is low, catalytic reaction rate is slow and intermediate products may cause secondary pollution. Research [1] [2] [3] showed,a new composite materials of visible light photocatalytic degradation of low concentration of volatile organic compounds were produced by use of combining the adsorbent with TiO2 photocatalytic technology.The adsorbent can enrich concentrations of volatile organic compounds on the surface of the TiO2 photocatalyst. This paper describes the mechanism of photocatalytic composites.The main preparation methods of photocatalytic composite adsorbent, principles of various preparation methods, achieving conditions and research status, ang the characteristics of each method are analyzed. It provide some reference for photocatalytic degradation of low concentrations of volatile organic compounds. © (2014) Trans Tech Publications, Switzerland.
收录类别:EI;SCOPUS
资源类型:会议论文;期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906979142&doi=10.4028%2fwww.scientific.net%2fAMR.1015.540&partnerID=40&md5=521da3d5f544921ebcb70b354150b2c7
TOP