可见光激发降解甲基橙的光催化漂浮球的制备  

Fabrication of photocatalytic floating spheres for degradation of methyl-orange under illumination of visible light

作　　者：宋英琦[1] 潘家豪 吴礼光[1] 王挺[1] 董春颖[1] SONG Yingqi;PAN Jiahao;WU Liguang;WANG Ting;DONG Chunying(School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, Zhejiang 310012, China)

机构地区：[1]浙江工商大学环境科学与工程学院,浙江杭州310012

出　　处：《纺织学报》2020年第12期102-110,共9页Journal of Textile Research

基　　金：国家自然科学基金资助项目(21776250);浙江省自然科学基金资助项目(LY19B060004,LY20B060001);2020年度高校实验室工作研究项目(ZD202004)。

摘　　要：为推广多相光催化技术在特殊废水深度治理中的应用,采用耦合吸附相反应技术和热还原处理制备了高活性的可见光响应的贵金属沉积光催化组分。将该光催化组分负载于多孔聚氨酯海绵颗粒表面后,填充至聚丙烯空心球中构建漂浮式光催化球,并用于高含盐废水中甲基橙的光降解。结果表明:通过吸附相反应技术可在TiO2光催化剂表面沉积小粒径且与TiO2表面紧密结合的贵金属纳米粒子,从而在光催化组分中引入费米能级并形成表面等离子体共振效应,增强光催化组分在可见光激发下对高含盐废水中甲基橙的降解性能;由于贵金属沉积光催化组分的高效降解性能,其负载后构建的漂浮式光催化球也能稳定高效地降解高含盐废水中的甲基橙。In order to extend the application of heterogeneous photocatalytic technology in deep level treatment for special wastewater,a visible light-driven photocatalytic component deposited by visible light with high performance was prepared via adsorbed-layer nanoreactor synthesis coupling with thermal reduction treatment.Followed that,the porous polyurethane sponge particle was firstly employed as a carrier to load the photocatalytic component,and the supported polyurethane sponge was filled into a polypropylene hollow sphere to fabricate a floating photocatalytic sphere for photodegrading methyl-orange in high saline waste water.The results show that noble metal nanoparticles with small size could be deposited on the surface of TiO2 closely combined with TiO2 by adsorbed-layer nanoreactor synthesis.Due to the introduction of the Fermi level and the plasmon resonance effect into the photocatalytic components,the degradation performance for methyl orange is enhanced in highly saline wastewater illuminated by visible light.Because of loading by noble metal deposition photocatalytic components with high performance,the resulting floating photocatalytic spheres could also stably and efficiently degrade methyl orange in highly saline wastewater.

关 键 词：吸附相反应技术 贵金属沉积 可见光光降解 漂浮式光催化球 高含盐废水 废水处理 

分 类 号：O647[理学—物理化学]