A simple method to prepare N-doped titania hollow spheres with high photocatalytic activity under visible light

被引：67

作者：

Ao, Yanhui ^{[1
,2
,3
]}

Xu, Jingjing ^{[1
,2
,3
]}

Fu, Degang ^{[1
,2
,3
]}

Yuan, Chunwei ^{[1
,2
]}

机构：

[1] Southeast Univ, Sch Chem & Chem Engn, Nanjing 210096, Peoples R China

[2] Southeast Univ, State Key Lab Bioelect, Nanjing 210096, Peoples R China

[3] Southeast Univ, Lab Environm & Biosafety, Res Inst, Suzhou 215123, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 167卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

N-doped; Hollow sphere; Titania; Photocatalysis; Carbon sphere; TIO2; POWDERS; METHYLENE-BLUE; CARBON; MICROSTRUCTURES; TRANSFORMATION; NANOPARTICLES; DEGRADATION; SURFACE; FILM;

D O I：

10.1016/j.jhazmat.2008.12.139

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

N-doped titania hollow spheres were prepared using hydrothermally prepared carbon spheres as template. The prepared hollow spheres were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), Brunauer-Emmett-Teller (BET), X-ray photoelectron spectroscopy (XPS) and UV-vis diffuse reflectance spectrum (DRS). The photocatalytic activity of as-prepared hollow titania spheres was determined by degradation of Reactive Brilliant Red dye X-3B (C.I. reactive red 2) under visible light irradiation, and was compared to commercial P25 titania. It was revealed that the photocatalytic activity of the titania hollow spheres enhanced a lot. The apparent rate constant of the titania hollow spheres was almost 17 times as that of P25 titania. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：413 / 417

页数：5

共 28 条

[1] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].