基于聚苯乙烯的硫化镉光催化剂的制备及其二氧化碳还原研究  

Preparation of Cadmium Sulfide Photocatalyst Based on Polystyrene and Its Carbon Dioxide Reduction

作　　者：冯寿淳 郝鹏鹏[1] 赵利花 FENG Shou-chun;HAO Peng-peng;ZHAO Li-hua(Tianjin University Renai College,Tianjin 301636,China)

机构地区：[1]天津大学仁爱学院,天津301636

出　　处：《塑料科技》2021年第2期32-35,共4页Plastics Science and Technology

基　　金：天津市教委项目(2018KJ265)。

摘　　要：制备了具有光催化活性的聚苯乙烯/硫化镉(PS/CdS)复合材料,并研究该光催化复合材料对二氧化碳的还原性能。结果表明:CdS成功地接枝到PS微球上制成了复合光催化材料。通过氮吸附测试检测发现,将CdS负载到PS上后复合材料比表面积变大,有利于光催化剂在水中发挥更好的光催化效率,实现将二氧化碳还原成甲酸和一氧化碳。荧光强度和紫外-可见漫反射检测表明,复合光催化材料在受到光照时能够更好地实现电子和空穴的分离,从而更有利于二氧化碳的还原。A polystyrene/cadmium sulfide(PS/CdS)composite material with photocatalytic activity was prepared,and the reduction performance of the photocatalytic composite material on carbon dioxide was studied.The results showed that CdS was successfully grafted onto PS microspheres to make composite photocatalytic materials.Through the nitrogen adsorption test,it is found that the specific surface area of the composite material becomes larger after CdS is loaded on the PS,which is beneficial for the photocatalyst to exert a better photocatalytic efficiency in water,and realizes the reduction of carbon dioxide into formic acid and carbon monoxide.Fluorescence intensity and UV-Vis diffuse reflectance measurements show that the composite photocatalytic material can better separate electrons and holes when exposed to light,which is more conducive to the reduction of carbon dioxide.

关 键 词：聚苯乙烯 硫化镉 光催化 二氧化碳还原 

分 类 号：TQ426[化学工程] TQ116.3