PVDF固载硫化锌纳米颗粒的制备及其光催化效果研究  

Research on the Preparation and the Photocatalytic Effect of Zinc Sulfide Nanoparticles Immobilized on PVDF

作　　者：郭竟 迟海燕 范瑞敏 GUO Jing;CHI Haiyan;FAN Ruimin(School of Civil Engineering,Tangshan University,Tangshan 063000,China)

机构地区：[1]唐山学院土木工程学院,河北唐山063000

出　　处：《唐山学院学报》2024年第6期20-26,共7页Journal of Tangshan University

基　　金：唐山学院博创基金(BC202009);唐山市水环境绿色降解新材料基础创新团队项目(22130218G)。

摘　　要：通过低温沉淀法合成了直径为90 nm的ZnS纳米颗粒,并将其固载在通过非溶剂相转化法制备的聚偏二氟乙烯(PVDF)颗粒表面上,合成PVDF-ZnS颗粒,用于亚甲基蓝的光催化降解实验。经特性分析可知,ZnS纳米颗粒能够牢固地固载在PVDF表面,且PVDF基质对ZnS纳米颗粒的光学性能没有不利影响。催化实验结果表明,由于较大的尺寸(5 mm)和出色的机械稳定性,PVDF-ZnS颗粒可以轻松浸入亚甲基蓝溶液并悬浮于光催化反应器中;PVDF-ZnS颗粒对亚甲基蓝的去除效率(约95%)比PVDF颗粒和ZnS纳米颗粒都高。在相同的实验条件下重复进行光催化测试,结果显示,PVDF-ZnS颗粒可以再利用,未观察到亚甲基蓝的去除效率下降的变化。ZnS nanoparticles with a diameter of 90 nm were synthesized by the low-temperature precipitation and immobilized on the surface of polyvinylidene fluoride(PVDF)particles prepared by the nonsolvent-induced phase separation method to synthesize PVDF-ZnS particles for the photocatalytic degradation experiment of methylene blue.Characteristic analysis reveals that ZnS nanoparticles can be firmly immobilized on the PVDF surface,and the PVDF matrix has no adverse effect on the optical properties of ZnS nanoparticles.The catalytic experiment results show that due to their larger size(5 mm)and excellent mechanical stability,PVDF-ZnS particles can be easily immersed in the methylene blue solution and suspend in the photocatalytic reactor;The removal efficiency of methylene blue by PVDF-ZnS particles(about 95%)is higher than that of both PVDF particles and ZnS nanoparticles.Repeated photocatalytic tests under the same experimental conditions show that PVDF-ZnS particles can be reused,and no decrease in the removal efficiency of methylene blue has been observed.

关 键 词：硫化锌 聚偏二氟乙烯 亚甲基蓝 光催化降解 

分 类 号：O643.36[理学—物理化学] TB383[理学—化学]