杂多酸光催化降解有机污染物研究进展

Research Progress on Photocatalytic Degradation of Organic Pollutants by Heteropoly Catalysts

作为具有出色催化性能的杂多酸催化剂,在光催化治理有机污染物领域也展现出广阔的应用前景。综述了近年杂多酸在光催化降解有机污染物方面的研究进展,重点介绍了杂多酸及固载杂多酸对农药、有机染料及有机卤化物的光催化性能,简要介绍了杂多酸在光催化治理空气中的有机污染物方面的贡献,展望了杂多酸在光催化治理有机污染物领域的发展趋势。

Heteropoly catalysts as a kind of green catalysts with good photocatalytic activity in the field of pollutant treatment have been developed over the past decade. This paper analyzes the photocatalytic degradation of dyes, pesticides and aqueous chlorinated organic compounds in water and the photocatalytic elimination of pollutants in air with the use of polyoxometalates （POM） and supported polyoxometalates. Particularly, a series of new and water-tolerant porous POM-containing hybrid photocatalysts are discussed. The advantages and limitations of photodegradation using polyoxometalates are stressed. The photocatalytic activity of the supported polyoxometalates reported in this review can be improved significantly as compared with that of the pure polyoxometalates due to their high surface areas, strong adsorption ability, pore structures, and the synergistic effects. And for the supported POM catalysts, it is easy to separate and recover the catalysts for recycling uses. The polyoxometalates combined with materials with light activity, such as titanium dioxide and tantalum pentoxide, may extend the photoresponse range to achieve visible light catalytic activity.