High photocatalytic activity of Zn2SnO4 among various nanostructures of Zn2xSn1-xO2 prepared by a hydrothermal method

被引：53

作者：

Firooz, Azam Anaraki ^{[1
]}

Mahjoub, Ali Reza ^{[1
]}

Khodadadi, Abbas Ali ^{[2
,3
]}

Movahedi, Maryam ^{[4
]}

机构：

[1] Tarbiat Modares Univ, Dept Chem, Tehran 14115175, Iran

[2] Univ Tehran, Sch Chem Engn, Tehran 111554563, Iran

[3] Univ Tehran, Nanosci & Nanotechnol Res Ctr, Tehran 111554563, Iran

[4] PNU, Dept Chem, Esfahan, Iran

来源：

CHEMICAL ENGINEERING JOURNAL | 2010年 / 165卷 / 02期

关键词：

Zn2SnO4; Hydrothermal; Photocatalytic activity; Photoluminescence property; ELECTRON-TRANSFER; CONGO-RED; ZNO; DEGRADATION; PERFORMANCE; GROWTH; SINGLE;

D O I：

10.1016/j.cej.2010.09.052

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Different structures and morphologies of SnO2 containing various amounts of ZnO were synthesized via a hydrothermal method (without any template), characterized by scanning electron microscopy and powder X-ray diffraction, and used for photocatalytic degradation of Congo red. The results revealed that using different ratios of Zn+2/Sn+2 affects the phase and morphology of the Zn2xSn1-xO2 compounds. This type of tailoring the morphology of SnO2 nanoparticles, ZnO doped SnO2 porous structure. ZnSnO3 flower-like, and Zn2SnO4 octahedrals was possible, by varying the Zn+2/Sn+2 ratio of 0, 1/10, 1/5 and 1/1, respectively. The formation mechanism of these products was proposed. Zn2SnO4 with octahedral morphology exhibited a significant enhancement of photocatalytic activity toward degrading Congo red, as compared to other samples. This could be attributed to enhanced oxygen vacancies and crystallite defects formed by substitution of Zn+2 in the lattice of SnO2, revealed in photoluminescence measurements. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：735 / 739

页数：5

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