Preparation and properties of sliver and nitrogen co-doped TiO2 photocatalyst

被引：14

作者：

Zhang, Ying ^{[1
]}

Zhang, Jin ^{[1
]}

Zhu, Zhongqi ^{[1
]}

Yan, Ningning ^{[1
]}

Liu, Qingju ^{[1
]}

机构：

[1] Yunnan Univ, Yunnan Key Lab Nanomat & Technol, Kunming 650091, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2013年 / 48卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Oxide; Sol-gel chemistry; Catalytic properties; SILVER; AG; PHOTODEGRADATION; NANOPARTICLES; ENHANCEMENT;

D O I：

10.1016/j.materresbull.2013.06.057

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TiO2 photocatalysts co-doped with different content of Ag and N were prepared by sol-gel method combined with microwave chemical method. The samples were analyzed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscope (TEM), ultraviolet-visible diffuse reflectance spectrum (UV-vis) and photo-luminescence emission spectrum (PL). The photocatalytic activity was investigated by photocatalytic degradation of methylene blue (MB) under irradiation of fluorescent lamp. The results indicate that Ag and N co-doping can restrain the increase of grain size, broaden the absorption spectrum to visible light region, and inhibit the recombination of the photo-generated electron-hole pairs. Moreover, the photocatalytic activity of Ag-N-TiO2 in MB degradation is remarkable improved. The degradation rate of the sample with Ag:TiO2 = 0.05 at%, N:TiO2 = 18.50 wt% in 5 h is 93.44%, which is much higher than that of Degussa P25 (39.40%). (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：4872 / 4876

页数：5

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