| 介孔氧化硅负载纳米硫化镉光催化剂制备及其可见光氧化性能 |
| |
| 引用本文： | 杨佑浩,任楠,杨志剑,张亚红,唐颐.介孔氧化硅负载纳米硫化镉光催化剂制备及其可见光氧化性能[J].复旦学报(自然科学版),2008,47(4). |
| |
| 作者姓名： | 杨佑浩 任楠 杨志剑 张亚红 唐颐 |
| |
| 作者单位： | 复旦大学,化学系,上海市分子催化和功能材料重点实验室,上海,200433 |
| |
| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划) |
| |
| 摘 要： | 在巯基预修饰的介孔氧化硅球孔道中原位生长纳米硫化镉(CdS)晶体,得到了介孔氧化硅负载的纳米硫化镉,并对其进行了表征.X射线粉末衍射图谱表明,得到的纳米硫化镉为六方晶相,其粒径被控制在2.6nm,在量子区域,与介孔氧化硅球最可几孔径大小一致.通过可见光下光催化降解有机染料和酚的实验,对介孔氧化硅负载的纳米硫化镉的光催化性能进行了研究.与体相硫化镉材料进行比较的结果表明,纳米硫化镉体现出了更高的光催化活性,紫外-可见漫反射吸收光谱表明,其高活性与其量子尺寸有关.
|
| 关 键 词： | 硫化镉 可见光光催化 有机物降解 介孔氧化硅 |
Preparation of Nano-CdS Photocatalyst Supported by Mesoporous Silica and Its Photocatalytic Activity Under Visible Light |
| |
| YANG You-hao,REN Nan,YANG Zhi-jian,ZHANG Ya-hong,TANG Yi.Preparation of Nano-CdS Photocatalyst Supported by Mesoporous Silica and Its Photocatalytic Activity Under Visible Light[J].Journal of Fudan University(Natural Science),2008,47(4). |
| |
| Authors: | YANG You-hao REN Nan YANG Zhi-jian ZHANG Ya-hong TANG Yi |
| |
| Abstract: | A mesoporous silica sphere supported nano-CdS photocatalyst was prepared by growing CdS nanocrystal in-situ in the mesopores of silica sphere.The product was characterized by SEM,TEM,XRD,N2 adsorption/desorption.The XRD pattern exhibits the diffraction peaks of hexagonal CdS,and the mean crystallite size is 2.6 nm,in agreement with the most probable pore diameter of mesoporous silica sphere.The product was applied in the photocatalytic degradation of organic pollutants under visible light and exhibited a higher photocatalytic activity than bulky CdS.UV-Vis DRS experiments indicate that the high photocatalytic activity benefits from the quantum size of the CdS. |
| |
| Keywords: | cadmium sulfide visible-light-induced photocatalysis degradation of organic compounds mesoporous silica sphere |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
