Synthesis of Nanocrystalline Yttrium Iron Oxides and their Activity for Photocatalytic Hydrogen Evolution

被引：11

作者：

Chen, Qingyun ^{[1
]}

Gu, Xin ^{[1
]}

Wang, Yunhai ^{[1
]}

Jing, Dengwei ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China

来源：

SCIENCE OF ADVANCED MATERIALS | 2013年 / 5卷 / 08期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

Yttrium Iron Oxide; Photocatalysis; Visible Light; Hydrogen; THERMAL-DECOMPOSITION; AUTO-COMBUSTION; ORTHOFERRITES; POWDERS; YFEO3;

D O I：

10.1166/sam.2013.1562

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanocrystalline yttrium iron oxides were successfully synthesized via a citrate chelating process using yttrium nitrate and iron nitrate as precursors. YFeO3 or Y3Fe5O12 could be prepared by the controlled thermal transformation with different Y/Fe initial ratios. The prepared samples were characterized by X-ray diffraction, N-2 adsorption, Raman spectroscopy, thermal analysis, scanning electron microscopy, UV-Vis absorption spectra and photoluminescence spectra. Under visible light irradiation, YFeO3 synthesized with the Y/Fe ratio of 1/2 had the highest photocatalytic activity for hydrogen evolution. Heat-treatment also showed considerable effects on hydrogen evolution.

引用

页码：1117 / 1122

页数：6

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