Synthesis and characterization of bioinspired hierarchical mesoporous TiO2 photocatalysts

被引：43

作者：

He, Zuoli ^{[1
]}

Que, Wenxiu ^{[1
]}

He, Yucheng ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Int Ctr Dielect Res, Sch Elect & Informat Engn, Elect Mat Res Lab, Xian 710049, Shaanxi, Peoples R China

来源：

MATERIALS LETTERS | 2013年 / 94卷

基金：

中国国家自然科学基金;

关键词：

TiO2; Mesoporous; Interface; Biotemplate; Photocatalyst; POLLEN;

D O I：

10.1016/j.matlet.2012.12.021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bioinspired hierarchical mesoporous TiO2 photocatalysts are prepared by using pollen grains as biotemplate. Physicochemical properties of the as-prepared samples are characterized in detail by X-ray diffraction analysis, scanning electron microscopy, X-ray photoelectron spectroscopy, and nitrogen adsorption-desorption isotherms. Results indicate that the as-prepared products have a similar structure with the pollen grains, which maintain the ellipsoidal shape and the open pores networks on reticular shells. The Brunauer-Emmett-Teller (BET) surface area is measured and its value is as high as 96.2 m(2) g(1), which is probably due to the fact that the biomolecules in pollen coats act as mesotemplates during the calcination process and the open macropore networks improve the accessibility of surface. In addition, the products have an excellent photocatalytic activity of RhB, which can be attributed to larger surface areas, anatase phase and similar structure with the pollen grains. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.

引用

页码：136 / 139

页数：4

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