Synthesis of TiO2 hollow spheres with tunable pore structure and enhanced photocatalytic activity

被引：20
作者：
Liu, Ruiping [1 ]
Ren, Feng [1 ]
Su, Weiming [1 ]
He, Peng [1 ]
Shen, Chao [1 ]
Zhang, Lei [2 ]
Wang, Chang-an [3 ]
机构：
[1] China Univ Min & Technol Beijing, Dept Mat Sci & Engn, Beijing 100083, Peoples R China
[2] Univ Alaska Fairbanks, Dept Mech Engn, Fairbanks, AK 99775 USA
[3] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2015年 / 41卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Powders chemical preparation; Microstructure-final; TiO2; Functional applications; DOPED TITANIA; CARBON;
D O I：
10.1016/j.ceramint.2015.07.181
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Titania hollow spheres were fabricated successfully by using tetrabutyl titanate as titanium precursor and colloidal carbon spheres as hard templates. The microstructure, textural properties, structure regulation approach, as well as the photocatalytic properties of the hollow spheres were investigated. The results show that the hollow spheres possess the perfect spherical shape, monodispersity, and hierarchically pore structures which endow them with high specific surface area and pore volume. The wall thickness and textural properties of the hollow spheres can be easily tailored by adjusting the concentration of tetrabutyl titanate. Evaluation of the titania hollow spheres for the photo-decomposition of methylene blue (MB) under visible-light irradiation reveals that they exhibit excellent photocatalytic activity and durability. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：14615 / 14620
页数：6
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