微米球光催化剂在环境净化及能源转化的研究进展
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摘要
光催化在污染物降解及能源转化应用方面前景宽广.然而,大部分光催化剂因本身物理结构的缺陷而难以广泛运用.微米球光催化剂具有显著的优点,如低密度、高光捕获能力和载流子分离效率、优异的电子和光学性能、高比表面积、易回收、优良的传递性能和表面渗透能力.这些结构有利于提高光催化性能和实际运用,因而受到广泛关注.重点介绍并讨论一些典型的微球光催化剂(TiO_2,ZnO,Bi_2WO_6,PbWO_4,BiFeO_3,BiOX(X=Cl,Br,I)等)的制备及这类光催化剂在环境净化和能源转化方面的研究进展,并展望微米球光催化剂的发展方向.
Photocatalysis has promising applications in the aspects of degrading various pollutants and converting light energy into chemical energy. However, the majority of photocatalysts are hard to be practical because of the physico-chemical properties' drawbacks. Microsphere photocatalysts has prominent advantages of low density, efficient light harvesting capability and carrier separation, excellent electronic and optical properties, as well as high surface area, easy recovery, good delivering ability, and surface permeability,leading to remarkably improved photocatalytic performances to attract considerable attention. This review focused on introducing and discussing the fabrication of some typical microsphere photocatalysts(TiO_2, Zn O,Bi_2WO_6, PbWO_4, BiFeO_3, BiOX(X =Cl, Br, I and so on) and their application progress in the environment purification and energy conversion, and prospects of the future development of microsphere photocatalysts.
Photocatalysis has promising applications in the aspects of degrading various pollutants and converting light energy into chemical energy. However, the majority of photocatalysts are hard to be practical because of the physico-chemical properties' drawbacks. Microsphere photocatalysts has prominent advantages of low density, efficient light harvesting capability and carrier separation, excellent electronic and optical properties, as well as high surface area, easy recovery, good delivering ability, and surface permeability,leading to remarkably improved photocatalytic performances to attract considerable attention. This review focused on introducing and discussing the fabrication of some typical microsphere photocatalysts(TiO_2, Zn O,Bi_2WO_6, PbWO_4, BiFeO_3, BiOX(X =Cl, Br, I and so on) and their application progress in the environment purification and energy conversion, and prospects of the future development of microsphere photocatalysts.
引文
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