Synthesis and high photocatalytic hydrogen production of SrTiO3 nanoparticles from water splitting under UV irradiation
Synthesis and high photocatalytic hydrogen production of SrTiO3 nanoparticles from water splitting under UV irradiation
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紫外辐照下 SrTiO3 纳米粒子的合成及高光催化水分解产氢
DOI：
10.1016/j.jpowsour.2008.05.057
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发表时间：
2008-09-01
影响因子：
9.2
通讯作者：
Li, Xingguo
中科院分区：
文献类型：
--
作者：
Liu, Yang;Xie, Lei;Li, Xingguo
通过三种方法合成了立方SrTiO3粉末：聚合络合物(PC)法、固相反应法和研磨助剂法。通过X射线衍射（XRD）、紫外可见光谱（UV-vis）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对获得的样品进行了表征。通过聚合络合物法合成的SrTiO3颗粒的平均直径为30nm，通过固相反应法合成的SrTiO3颗粒的平均直径为140nm，通过研磨助剂法合成的SrTiO3颗粒的平均直径为30nm。聚合络合法SrTiO3粉体光催化分解水析氢活性高于固相反应法和助磨法。粒径、组分均匀性和颗粒聚集程度影响 SrTiO3 的光催化析氢活性。紫外照射下聚合络合法在SrTiO3上光催化析氢的最佳速率高达3.2 mmol h(-1) g(-1)。 (C) 2008 Elsevier B.V. 保留所有权利。
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.