Catalytic Dechlorination of Monochloroacetic Acid by Film-supported Pd/Fe Bimetallic Nanoparticles
Three novel kinds of support film, including PVDF-PAA film, PVDF·TiO2-PAA film and PVDF-g-AA film, were synthesized and used to immobilize the Pd/Fe bimetallic nanoparticles (NPs). And PVDF-PAA film and PVDF·TiO2-PAA film were synthesized by using crosslinking reaction between polyacrylic acid (PAA) and ethylene glycol (EG) on the surface of both original and modified Poly(vinylidene fluoride) (PVDF) films, which produced a hydrophilic coating layer with bimetallic NPs on the surface of support films, whereas PVDF-g-AA film was prepared by three steps including alkaline treatment, nucleophilic addition and grafting acrylic acid. After the immobilization of Pd/Fe NPs, the immobilized bimetallic NPs systems were characterized by SEM and Fourier transform infrared spectroscopy (FT-IR). The dechlorination efficiency of the immobilized bimetallic NPs systems were tested and discussed by dechlorinating monochloroacetic acid (MCAA). Comparing with free suspended Pd/Fe NPs, bimetallic NPs with support films appeared better catalytic dechlorination efficiency, and the dechlorination efficiencies of 10 mg/L MCAA in 120 min by Pd/Fe NPs immobilized in PVDF-PAA film, PVDF·TiO2-PAA film and PVDF-g-AA film were 56.33%, 71.01% and 75.51%, respectively.
XIA Zhi LIU Huiling WANG Shan MENG Zhaohong
School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, Ch School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, Ch
国际会议
2011 International Symposium on Environmental Science and Technology(2011 环境科学与技术国际会议 2011 ISEST)
广东东莞
英文
704-709
2011-06-01（万方平台首次上网日期，不代表论文的发表时间）