光化学沉积法制备Ag掺杂SnZn(OH)_6空心粒子及其光催化性能  

Preperation of Ag doped Sn Zn(OH)_6 hollow particles by photodeposition method

作　　者：王文燕[1] 郭聪[1] 何益明[2] 吴廷华[1] 吴瑛[1] 

机构地区：[1]浙江师范大学物理化学研究所,浙江金华321004 [2]浙江师范大学数理与信息工程学院,浙江金华321004

出　　处：《浙江师范大学学报（自然科学版）》2014年第4期457-462,共6页Journal of Zhejiang Normal University:Natural Sciences

基　　金：国家自然科学基金资助项目(21373188);浙江省自然科学基金资助项目(LY12B03001)

摘　　要：采用均匀沉淀法制备了具有立方相的Sn Zn(OH)6(ZHS)空心粒子,然后通过光化学沉积法将Ag+还原为Ag0粒子负载于其上,制备得到负载Ag纳米粒子的Sn Zn(OH)6粒子;使用X射线衍射(XRD)、扫描电镜(SEM)、紫外-可见漫反射(DRS)等方法对产品进行了表征,并对其在紫外及可见光下降解罗丹明B的光催化活性进行了检测.结果表明,负载金属银粒子的ZHS不仅在紫外光下对罗丹明B的降解能力有显著的提高,而且对可见光也有明显的响应.Sn Zn（ OH）6（ ZHS） hollow cubes were synthesized by a facile self-templated method at room temperature. Ag / ZHS particles were prepared by photodeposition of Ag by reduction of Ag^＋particles under halogen tungsten lamp irradiation. The crystalline structure and morphology of the prepared particles were characterized by X-ray diffraction（ XRD）,UV-vis diffuse reflectance spectroscopy（ DRS）,scanning electron microscopy（ SEM）. The results indicated that the particles had almost uniform monoclinic geometry and uniform size. The photocatalytic activity of Ag / ZHS was tested through degradation of Rh B. Therein,the hollow Ag / ZHS showed the highest light catalytic performance due to its large BET surface area and high crystallinity.Furthermore,Ag doped ZHS produced crystal lattice defects and benefited the separation of this photoproduction carrier.

关 键 词：光催化 SnZn(OH)6 降解 等离子体共振 掺杂 银 

分 类 号：O064[理学]