| Photoelectrochemical characteristics of AB5-type hydrogen storage alloy modified with SrTiO3 photocatalyst |
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| 作者姓名： | 张文魁 甘永平 黄辉 张博 王改田 涂江平 |
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| 作者单位： | [1]Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou 310014, China [2]Institute of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China |
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| 基金项目： | 国家自然科学基金，浙江省自然科学基金 |
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| 摘 要： | Perovskite-type SrTiO3 powders were prepared by using strontium acetate, tetrabutyl titanate and sodium hydroxide via direct hydrolysis-precipitatlon process. AB5-type hydrogen storage alloy（HSA） electrodes modified with SrTiO3 powders were prepared and the photoelectrochemical characteristics of the as-prepared electrodes were investigated. The results of cyclic voltammograph show that the current of reduction peak increases remarkably under the light irradiation. The obvious photochargeable properties are obtained for the hydrogen storage alloys modified with Perovskite-type SrTiO3 powders. During photocharging process, the potential of the electrode shifts quickly to negative direction and a potential plateau occurs. HSA electrode modified with SrTiO3 powders prepared by direct hydrolysis-precipitation process gives the higher potential of about -0.90 V（vs Hg/HgO） under the light irradiation. SEM observation discloses that a large amount of microcracks occur on the surface of the electrode after photocharging process, which is caused by the formation of hydride in the bulk of electrode.
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| 关 键 词： | 半导体 物理性质 合金 SrTiO3 光催化剂 |
| 文章编号： | 1003-6326（2005）04-0733-05 |
| 收稿时间： | 2004-11-08 |
| 修稿时间： | 2005-02-25 |
Photoelectrochemical characteristics of AB5-type hydrogen storage alloy modified with SrTiO3 photocatalyst |
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| ZHANG Wen-kui,GAN Yong-ping,HUANG Hui,ZHANG Bo,WANG Gai-tian,TU Jiang-ping.Photoelectrochemical characteristics of AB5-type hydrogen storage alloy modified with SrTiO3 photocatalyst[J].Transactions of Nonferrous Metals Society of China,2005,15(4):733-737. |
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| Authors: | ZHANG Wen-kui GAN Yong-ping HUANG Hui ZHANG Bo WANG Gai-tian TU Jiang-ping |
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| Abstract: | Perovskite-type SrTiO3 powders were prepared by using strontium acetate, tetrabutyl titanate and sodium hydroxide via direct hydrolysis-precipitation process. AB5-type hydrogen storage alloy(HSA) electrodes modified with SrTiO3 powders were prepared and the photoelectrochemical characteristics of the as-prepared electrodes were investigated. The results of cyclic voltammograph show that the current of reduction peak increases remarkably under the light irradiation. The obvious photochargeable properties are obtained for the hydrogen storage alloys modified with Perovskite-type SrTiO3 powders. During photocharging process, the potential of the electrode shifts quickly to negative direction and a potential plateau occurs. HSA electrode modified with SrTiO3 powders prepared by direct hydrolysis-precipitation process gives the higher potential of about -0.90 V(vs Hg/HgO) under the light irradiation. SEM observation discloses that a large amount of microcracks occur on the surface of the electrode after photocharging process, which is caused by the formation of hydride in the bulk of electrode. |
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| Keywords: | AB5-type hydrogen storage alloys SrTiO3 photocatalysts photoelectrochemical characteristics |
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