Synthesis and high photocatalytic hydrogen production of SrTiO3 nanoparticles from water splitting under UV irradiation

被引:147
作者
Liu, Yang [1 ,3 ]
Xie, Lei [1 ]
Li, Yan [1 ]
Yang, Rong [1 ]
Qu, Jianglan [1 ]
Li, Yaoqi [1 ]
Li, Xingguo [1 ,2 ]
机构
[1] Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, BNLMS, Beijing 100871, Peoples R China
[2] Peking Univ, Coll Engn, Beijing 100871, Peoples R China
[3] Beijing Union Univ, Coll Arts & Sci, Beijing Key Lab Bioact Subst & Funct Foods, Beijing 100083, Peoples R China
基金
中国国家自然科学基金;
关键词
photocatalyst; water splitting; hydrogen; polymerized complex method;
D O I
10.1016/j.jpowsour.2008.05.057
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Cubic SrTiO3 powders were synthesized by three methods: the polymerized complex (PC) method, the solid state reaction, and the milling assistant method. The samples obtained were characterized by X-ray diffraction (XRD), UV-vis spectroscopy (UV-vis), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The mean diameters of the as-synthesized SrTiO3 particles were 30 nrn by the polymerized complex method, 140 nm by the solid state reaction, and 30 nm by the milling assistant method. The photocatalytic activity of hydrogen evolution from water splitting over SrTiO3 powders by the polymerized complex method is higher than that by the solid state reaction and the milling assistant method. Particle size, uniformity of components, and particle aggregation extent affect the photocatalytic activity of SrTiO3 for hydrogen evolution. The best rate of photocatalytic hydrogen evolution over SrTiO3 by the polymerized complex method under UV illumination is as high as 3.2 mmol h(-1) g(-1). (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:701 / 707
页数:7
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