Nitrogen-doped SiO2/TiO2 core/shell nanoparticles as highly efficient visible light photocatalyst

被引：87

作者：

Kim, Chanhoi ^{[1
]}

Choi, Moonjung ^{[1
]}

Jang, Jyongsik ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151742, South Korea

来源：

CATALYSIS COMMUNICATIONS | 2010年 / 11卷 / 05期

关键词：

Nitrogen-doped TiO2; Template; Photocatalyst; Calcination temperature; Visible light; CONDUCTING-POLYMER NANOMATERIALS; TIO2; DEGRADATION; PERFORMANCE; FABRICATION; CATALYST; SULFUR; CARBON; ROUTE; SIZE;

D O I：

10.1016/j.catcom.2009.11.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Nitrogen-doped SiO2/TiO2 core/shell nanoparticles with uniform diameter were fabricated using SiO2 template sol-gel method. Furthermore, the relationship between the temperate of calcination and photocatalytic efficiency was also investigated in the viewpoint of organic pollutant decomposition. The morphology and characteristics of nitrogen-doped SiO2/TiO2 core/shell nanoparticles were studied by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectroscopy (DRS), X-ray powder diffraction (XRD), and specific surface area. The results demonstrated that nitrogen-doped TiO2 layer was successfully coated onto the SiO2 nanoparticles without aggregation. Nitrogen-doped SiO2/TiO2 core/shell nanoparticles exhibited highly efficient photocatalytic activity under visible light irradiation due to high nitrogen doping level and surface area. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：378 / 382

页数：5

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