Solvothermal synthesis of SrTiO3 nanoparticles precisely controlled in surface crystal planes and their photocatalytic activity
Solvothermal synthesis of SrTiO3 nanoparticles precisely controlled in surface crystal planes and their photocatalytic activity
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DOI：
10.1016/j.apcatb.2013.07.051
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发表时间：
2014-01-01
影响因子：
22.1
通讯作者：
Muramatsu, Atsushi
中科院分区：
文献类型：
--
作者：
Kimijima, Takeshi;Kanie, Kiyoshi;Muramatsu, Atsushi
采用溶剂热法在水/多元醇混合溶液中合成了立方、球形和片状钛酸锶（SrTiO 3）纳米粒子。通过调节水/二甘醇的初始体积比，将{1 0 0}面包围的立方粒子的尺寸控制在24 ~ 43 nm之间。立方体粒子在紫外光照射下表现出很高的有机物分解活性。而在水/乙二醇溶液体系中，得到了以{1 1 0}晶面为主要界面的片状颗粒，具有较高的光催化析氢活性。这些结果表明，{1 0 0}表面显示出高的氧化活性，而{1 1 0}表面显示出高的还原活性。(C)2013爱思唯尔有限公司版权所有。
Strontium titanate (SrTiO3) nanoparticles of cubes, spheres, and flake-type morphology were obtained by a solvothermal synthesis in H2O/polyols mixed solution. Size of cubic particles bounded by {1 0 0} faces was controlled in the range from 24 to 43 nm by the adjustment of initial volume ratio in H2O/diethylene glycol. Cubic particles exhibited high decomposition activity of organic compounds under ultraviolet irradiation. On the other hand, flake-type particles bounded mainly by {1 1 0} faces were obtained in H2O/ethylene glycol solution system, highly active for H-2 evolution in photocatalytic reaction. These results indicate that the {1 0 0} surface shows high oxidative activity and that the {1 1 0} surface shows high reductive activity. (C) 2013 Elsevier B.V. All rights reserved.