Solar photocatalytic degradation of methylene blue using doped TiO2 nanoparticles

被引：51

作者：

Bhosale, R. R. ^{[1
]}

Pujari, S. R. ^{[1
]}

Muley, G. G. ^{[2
]}

Patil, S. H. ^{[3
]}

Patil, K. R. ^{[3
]}

Shaikh, M. F. ^{[4
]}

Gambhire, A. B. ^{[4
]}

机构：

[1] DBF Dayanad Coll Arts & Sci, Solapur 413002, Maharashtra, India

[2] St Gadge Baba Amravati Univ, Dept Phys, Amravati 444602, Maharashtra, India

[3] Natl Chem Lab, Catalysis Div, Pune 411008, Maharashtra, India

[4] Shri Anand Coll Sci, Dept Chem, Ahmednagar 414102, Maharashtra, India

来源：

SOLAR ENERGY | 2014年 / 103卷

关键词：

Carbon; Iron; Solar photocatalysis; Methylene blue; VISIBLE-LIGHT IRRADIATION; TITANIUM-DIOXIDE; THIN-FILMS; POWDERS;

D O I：

10.1016/j.solener.2014.02.043

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Doped-TiO2 nanoparticles (M:TiO2: Fe, Zn, Zr, Sb, Ce and nM:TiO2: B, C, N, P, S) with anatase structure were prepared by sol-gel method and characterized by X-ray diffraction (XRD), Transmission electron microscopy (TEM), X-ray photoelectron spectra (XPS), Brunauer-Teller method (BET), UV-Vis diffuses reflectance spectroscopy (DRS). Results revealed that the anatase structure is highly stable for all doped TiO2 prepared compounds with enhancement in the surface area. UV-Vis diffuse reflectance spectra showed that these dopants were responsible for narrowing the band gap of TiO2 and shifting its optical response from ultraviolet to visible-light region. The photocatalytic activities of these multi-doped TiO2 catalysts were investigated by degradation methylene blue in aqueous solution under solar-light illumination. The results showed an appreciable enhancement in the photoactivity of the C-doped TiO2 as compared to other multi-doped TiO2 because of the formation of Ti+3 species which prevent the recombination of electron-hole pairs in C-doped TiO2. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：473 / 479

页数：7

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