Efficient photocatalytic degradation of organics diluted in water and air using TiO2 designed with zeolites and mesoporous silica materials
Efficient photocatalytic degradation of organics diluted in water and air using TiO2 designed with zeolites and mesoporous silica materials
复制标题
DOI：
10.1039/c0jm02741c
复制
发表时间：
2011-01-01
影响因子：
--
通讯作者：
Yamashita, Hiromi
中科院分区：
文献类型：
--
作者：
Kuwahara, Yasutaka;Yamashita, Hiromi
二氧化钛(TiO2光催化剂)是一种很有前途的光催化剂，可以在环境友好的条件下降解有机化合物。本文综述了近年来二氧化钛-吸附剂复合光催化剂的研究进展，特别是以沸石和介孔二氧化硅等有序纳米多孔二氧化硅材料为载体的复合光催化剂的研究进展，旨在构建高效的光降解体系来降解水和空气中稀释的有机化合物。本文还介绍了沸石和介孔二氧化硅的基本特征、表面吸附动力学以及表面改性技术的原理，并强调了载体材料的疏水性可以显著提高光降解能力。此外，我们注意到几种新兴的从硅质工业废物中合成相关沸石材料的方法，这表明该领域实现了节能和面向回收的制造工艺。
Titanium dioxide (TiO2) is a promising photocatalyst for degradation of organic compounds ideally under environmentally benign conditions. This paper reviews recent developments in designing TiO2-sorbent hybrid photocatalysts, especially those supported on ordered nano-porous silica materials including zeolites and mesoporous silicas, with the objective of fabricating efficient photodegradation systems toward organic compounds diluted in water and air. This review also describes the basic features of zeolites and mesoporous silica, adsorption kinetics on their surfaces, and the principles of surface modification techniques, and highlights that the hydrophobic nature of support materials can offer significant enhancement in photodegradation. Additionally, we note the several emerging synthetic approaches for related zeolitic materials from siliceous industrial wastes, which indicate the realization of energy-saving and recycling-oriented manufacturing processes in this field.