C-doped hollow TiO2 spheres: in situ synthesis, controlled shell thickness, and superior visible-light photocatalytic activity

被引：261

作者：

Zhang, Ying ^{[1
]}

Zhao, Zhiyuan ^{[1
]}

Chen, Juanrong ^{[2
]}

Cheng, Li ^{[1
]}

Chang, Jun ^{[1
]}

Sheng, Weichen ^{[1
]}

Hu, Changyuan ^{[3
]}

Cao, Shunsheng ^{[1
]}

机构：

[1] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China

[2] Jiangsu Univ, Sch Environm & Safety Engn, Zhenjiang 212013, Peoples R China

[3] Jiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Surface Engn, Nanchang 330013, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2015年 / 165卷

基金：

中国国家自然科学基金;

关键词：

In situ synthesis; C-doping; Hollow TiO2; Photocatalysis; Visible-light photocatalytic activity; EXPOSED; 001; FACETS; MESOPOROUS TIO2; HYDROTHERMAL METHOD; CODOPED TIO2; CARBON; MICROSPHERES; NANOCOMPOSITES; NANOPARTICLES; PERFORMANCE; STORAGE;

D O I：

10.1016/j.apcatb.2014.10.063

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The persistent efforts have been paid to shift the ultraviolet of titania to visible-light-driven photocatalysis. In this work, we explored a facile, cost-effective method to in situ create C-doped hollow TiO2 spheres. This method involved the preparation of monodisperse cationic polystyrene spheres (CPS), sequential deposition of TiO2 precursor via template-directed self-assembly, and the removal of CPS template by calcination at 450 degrees C. The structure and properties of hollow TiO2 catalysts were characterized by N-2 desorption-adsorption, X-ray diffraction (XRD), UV-vis spectroscopy, and X-ray photoelectron spectroscopy (XPS). Results confirmed the carbon doping in the as-prepared hollow TiO2 lattice. When C-doped hollow TiO2 spheres were used as photocatalysts for the degradation of Rhodamine B under visible-light irradiation, the as-synthesized hollow anatase exhibited a superior photocatalytic activity than the commercial P25 and many TiO2-based photocatalysts reported in literature, significantly broadening its potential for many practical applications. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：715 / 722

页数：8

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