| 氧化锌/镁铝复合氧化物的制备及光催化性能 |
| |
| 引用本文： | 袁素珺,张青红,李耀刚,王宏志. 氧化锌/镁铝复合氧化物的制备及光催化性能[J]. 无机化学学报, 2009, 25(11): 1977-1981 |
| |
| 作者姓名： | 袁素珺 张青红 李耀刚 王宏志 |
| |
| 作者单位： | 东华大学,纤维材料改性国家重点实验室,教育部先进玻璃制造技术工程中心,上海,201620 |
| |
| 基金项目： | 国家科技支撑计划，上海市重点学科基金 |
| |
| 摘 要： | 将镁铝层状双氢氧化物分散在锌盐与尿素的混合液中，加热使尿素水解、锌离子沉淀，经洗涤、干燥、煅烧，再用碳酸钠溶液浸渍、煅烧，得到还原后的氧化锌/镁铝复合氧化物。用X-射线衍射(XRD)、透射电子显微镜(TEM)、氮等温吸附和傅里叶红外光谱(FTIR)等方法对所制备的氧化锌/镁铝复合氧化物的结构和性能进行了表征。以酸性红G为模型污染物评价了其去除效率及光催化活性。碳酸钠还原处理过的氧化锌/镁铝复合氧化物结构发生了改变，氧化锌的晶粒变小，复合氧化物变成了片状结构，其对酸性红G的去除效率也明显提高，质量比为2∶1的氧化锌/镁铝复合物经还原后表现出了良好的光催化活性。
|
| 关 键 词： | 光催化； 吸附； 氧化锌； 层状双氢氧化物 |
Preparation and Photocatalytic Activity of ZnO/Mg-Al Mixed Oxides |
| |
| YUAN Su-Jun,ZHANG Qing-Hong,LI Yao-Gang and WANG Hong-Zhi. Preparation and Photocatalytic Activity of ZnO/Mg-Al Mixed Oxides[J]. Chinese Journal of Inorganic Chemistry, 2009, 25(11): 1977-1981 |
| |
| Authors: | YUAN Su-Jun ZHANG Qing-Hong LI Yao-Gang WANG Hong-Zhi |
| |
| Affiliation: | State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Engineering Research Center of Advanced Glasses Manufacturing Technology, MOE, Donghua University, Shanghai 201620,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Engineering Research Center of Advanced Glasses Manufacturing Technology, MOE, Donghua University, Shanghai 201620,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Engineering Research Center of Advanced Glasses Manufacturing Technology, MOE, Donghua University, Shanghai 201620 and State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Engineering Research Center of Advanced Glasses Manufacturing Technology, MOE, Donghua University, Shanghai 201620 |
| |
| Abstract: | Mg-Al layered double hydroxides with carbonate anions (Mg-Al-CO_3-LDHs) were dispersed into a mixed solution of zinc salt and urea. Upon heating, the hydroxide ions released by the urea hydrolysis promoted the precipitation of zinc ions in the solution, and ZnO/Mg-Al mixed oxides were obtained after washing, drying and calcining. The ZnO/Mg-Al mixed oxides were restructured by soaking in Na_2CO_3 solution and the restructured ZnO/Mg-Al mixed oxides (re-ZnO/LDHs)were obtained after subsequent calcination. The nanocomposites were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), nitrogen adsorption-desorption, and Fourier transform infrared spectra (FTIR). The removal efficiencies and the photocatalytic activities of the nanocomposites were investigated by the degradation of acid red G aqueous solution. After the reduction treatment by Na_2CO_3, the grain size of the ZnO decreased and the shape of the Mg-Al mixed oxides in re-ZnO/ LDHs changed into the sheet-like structure. The removal efficiencies of them increased apparently and the re-ZnO/LDHs with a mass ratio of 2:1 had a better photocatalytic activity. |
| |
| Keywords: | photocatalysis adsorption ZnO layered double hydroxide |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《无机化学学报》浏览原始摘要信息 |
|
点击此处可从《无机化学学报》下载全文 |
|
