Hydrothermal synthesis of well-dispersed ultrafine N-doped TiO2 nanoparticles with enhanced photocatalytic activity under visible light

被引：101

作者：

Hu, Shaozheng

Wang, Anjie ^{[1
,2
]}

Li, Xiang ^{[2
]}

Loewe, Holger ^{[3
]}

机构：

[1] Dalian Univ Technol, Sch Chem Engn, Dept Catalysis, State Key Lab Fine Chem, Dalian 116012, Peoples R China

[2] Dalian Univ Technol, Liaoning Key Lab Petrochem Technol & Equipments, Dalian 116012, Peoples R China

[3] Johannes Gutenberg Univ Mainz, Inst Organ Chem, D-55128 Mainz, Germany

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2010年 / 71卷 / 03期

关键词：

Nanostructures; Optical materials; Chemical synthesis; Optical properties; Surface properties; TITANIUM-DIOXIDE; NITROGEN; FILMS; PARTICLES; SURFACE; RUTILE; PHASE; OXIDE;

D O I：

10.1016/j.jpcs.2009.10.012

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ultrafine nitrogen-doped TiO2 nanoparticles with narrow particle size distribution, good dispersion, and high surface area were synthesized in the presence of urea and PEG-4000 via a hydrothermal procedure. TEM observation, N-2 adsorption, XRD, UV-vis spectroscopy, the Raman spectroscopy and XPS analysis were conducted to characterize the synthesized TiO2 particles. The synthesized TiO2 particles were a mixture of 49.5% anatase and 50.5% rutile with a size of around 5 nm. The photocatalytic activities were tested in the degradation of an aqueous solution of a reactive Brilliant Blue KN-R under both UV and visible light. The synthesized TiO2 particles showed much higher photocatalytic activity than a commercial P25 TiO2 powder under both UV and visible light irradiations. The high performance is associated to N doping, the reduced particle size, good dispersion, high surface area, and a quantum size effect. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：156 / 162

页数：7

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