| 柠檬酸络合法制备质子化层状钙钛矿K0.5La0.5Bi2Ta2O9及其光解水制氢性能 |
| |
| 引用本文： | 陈威,高寒阳,杨俞,林培宾,袁坚,上官文峰*,苏佳纯,孙洋洲.柠檬酸络合法制备质子化层状钙钛矿K0.5La0.5Bi2Ta2O9及其光解水制氢性能[J].物理化学学报,2012,28(12):2911-2916. |
| |
| 作者姓名： | 陈威 高寒阳 杨俞 林培宾 袁坚 上官文峰* 苏佳纯 孙洋洲 |
| |
| 作者单位： | 1.Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China;2.CNOOC New Energy Investment Co. Ltd. Beijing 100016, P. R. China |
| |
| 基金项目： | 国家重点基础研究发展计划(973计划)(2009CN220000)及国家自然科学基金(20973110)资助项目 |
| |
| 摘 要： | 采用柠檬酸络合法制备铋层钙钛矿K0.5La0.5Bi2Ta2O9 (KLBT), 通过酸化处理得到质子化层状钙钛矿H1.9K0.3La0.5Bi0.1Ta2O7(HKLBT)光催化剂, 并通过热重-差热(TG-DSC)、X射线衍射(XRD)、紫外-可见漫反射(DRS)、X射线光电子能谱(XPS)等技术对其进行了表征和分析.考察了前驱体KLBT的不同焙烧温度对HKLBT制氢活性的影响. 结果表明, 柠檬酸络合法能在较低温度下合成高结晶度纯相HKLBT, 前驱体经900℃焙烧制备的HKLBT催化剂活性最高, 在纯水中的产氢速率达236.6μmol·h-1; 长时间活性测试表明HKLBT具有完全分解水同时产氢产氧能力,且具有较好的稳定性.
|
| 关 键 词： | 光催化 水分解 层状钙钛矿 酸化 |
| 收稿时间： | 2012-07-06 |
| 修稿时间： | 2012-08-01 |
Polymerizable Complex Synthesis of Protonated Form of Layered Perovskite K0.5La0.5Bi2Ta2O9 for Water Splitting into Hydrogen |
| |
| CHEN Wei,GAO Han-Yang,YANG Yu,LIN Pei-Bin,YUAN Jian,SHANGGUAN Wen-Feng,SU Jia-Chun,SUN Yang-Zhou.Polymerizable Complex Synthesis of Protonated Form of Layered Perovskite K0.5La0.5Bi2Ta2O9 for Water Splitting into Hydrogen[J].Acta Physico-Chimica Sinica,2012,28(12):2911-2916. |
| |
| Authors: | CHEN Wei GAO Han-Yang YANG Yu LIN Pei-Bin YUAN Jian SHANGGUAN Wen-Feng SU Jia-Chun SUN Yang-Zhou |
| |
| Institution: | 1.Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China;2.CNOOC New Energy Investment Co. Ltd. Beijing 100016, P. R. China |
| |
| Abstract: | The protonated layered perovskite oxide H1.9K0.3La0.5Bi0.1Ta2O7 (HKLBT) was prepared from K0.5La0.5Bi2Ta2O9 (KLBT) by H ion-exchange, and subsequently characterized by thermogravimetric analysis (TG-DSC), X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (DRS), and X-ray photoelectron spectroscopy (XPS). The effects of the calcining temperature on the material''s photocatalytic activity were also investigated. Results showed that HKLBT with high crystalline quality could be synthesized at low temperatures and that HKLBT prepared from KLBT calcined at 900℃ exhibited the greatest photocatalytic activity, with an average water splitting hydrogen evolution rate of 236.6 μmol·h-1 in pure water. The time course of water splitting indicated HKLBT has ability to split water into hydrogen and oxygen with long-term stability. |
| |
| Keywords: | Photocatalysis Water splitting Layered perovskite Acid treatment |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《物理化学学报》浏览原始摘要信息 |
| 点击此处可从《物理化学学报》下载免费的PDF全文 |
|
