| Ag掺杂的K_2La_2Ti_3O_(10)可见光催化制氢的研究 |
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| 引用本文： | 刘利,崔文权,梁英华,邱发礼.Ag掺杂的K_2La_2Ti_3O_(10)可见光催化制氢的研究[J].功能材料,2010,41(4). |
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| 作者姓名： | 刘利 崔文权 梁英华 邱发礼 |
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| 作者单位： | 1. 河北理工大学,化工与生物技术学院,河北,唐山,063009
2. 中科院成都有机化学研究所,四川,成都,610041 |
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| 基金项目： | 国家自然科学基金资助项目(50972037);;唐山市重点实验室基金资助项目(08360204A-3);;河北理工大学博士科研启动基金 |
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| 摘 要： | 采用高温固相法合成了具有可见光响应的Ag掺杂的K2La2Ti3O10催化剂,利用XRD、UV-VisDRS、TEM和XPS对催化剂进行了表征。考察了催化剂的可见光催化分解甲醇水溶液制氢的活性,并对可见光催化机理进行了分析。研究表明,Ag的掺杂没有改变K2La2Ti3O10的微晶结构,并使催化剂粒径有所减小。紫外-可见漫反射分析表明禁带宽度为2.8eV左右,对可见光具有较高吸收。担载2%(质量分数)Pt后,在可见光下光催化活性较K2La2Ti3O10大大提高,掺杂1%(摩尔分数)Ag的K2La2Ti3O10的产氢量为0.37mmol,而纯K2La2Ti3O10的产氢量只有0.037mmol;掺杂1%(摩尔分数)Ag的K2La2Ti3O10的产氢速率最大0.08mmol/h。
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| 关 键 词： | 光催化 制氢 K_2La_2Ti_3O_（10） 可见光 Ag掺杂 |
Photocatalytic activity of Ag-doped K2La2Ti3O10 under visible light irradiation for hydrogen evolution |
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| LIU Li,CUI Wen-quan,LIANG Ying-hua,QIU Fa-li.Photocatalytic activity of Ag-doped K2La2Ti3O10 under visible light irradiation for hydrogen evolution[J].Journal of Functional Materials,2010,41(4). |
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| Authors: | LIU Li CUI Wen-quan LIANG Ying-hua QIU Fa-li |
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| Affiliation: | LIU Li1,CUI Wen-quan1,LIANG Ying-hua1,QIU Fa-li2 |
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| Abstract: | In this paper,Ag-doped K2La2Ti3O10 and pure were prepared by high temperature solid state reaction and were characterized by XRD,UV-Vis DRS and TEM.The photocatalytic activities of the catalysts for hydrogen evolution were carried out under visible light irradiation.The results showed that the Ag-doped K2La2Ti3O10 powder shifts the UV absorption band of K2La2Ti3O10 toward visible light region.The Ag-doped K2La2Ti3O10 shows a higher activity than K2La2Ti3O10 under visible light irradiation after they were lo... |
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| Keywords: | photocatalytic hydrogen K2La2Ti3O10 visible light Ag |
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