期刊
JOURNAL OF ENVIRONMENTAL SCIENCES
卷 31, 期 -, 页码 194-202出版社
SCIENCE PRESS
DOI: 10.1016/j.jes.2014.12.009
关键词
PVDF membrane; Nano-sized Al2O3 particles; Pd/Fe nanoparticles; Matrix modified; Dichloroacetic acid
资金
- Nature Science Foundation of Heilongjiang Province [B201410]
- Postdoctoral Foundation Project of Heilongjiang Province [LBH-Z13128]
- Science and Technology Research Program of Education Bureau of Heilongjiang Province [12531206]
- Special Scientific Research Projects of Harbin Normal University [12XQXG02]
- National Nature Science Foundation of China [41030743, 42171217]
Using a liquid-solid phase inversion method, a hybrid matrix poly(vinylidene fluoride) (PVDF) membrane was prepared with alumina (Al2O3) nanoparticle addition. Pd/Fe nanoparticles (NPs) were successfully immobilized on the Al2O3/PVDF membrane, which was characterized by Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). The micrographs showed that the Pd/Fe NPs were dispersed homogeneously. Several important experimental parameters were optimized, including the mechanical properties, contact angle and surface area of Al2O3/PVDF composite membranes with different Al2O3 contents. At the same time, the ferrous ion concentration and the effect of hydrophilization were studied. The results showed that the modified Al2O3/PVDF membrane functioned well as a support. The Al2O3/PVDF membrane with immobilized Pd/Fe NPs exhibited high efficiency in terms of dichloroacetic acid (DCAA) dechlorination. Additionally, a reaction pathway for DCAA dechlorination by Pd/Fe NPs immobilized on the Al2O3/PVDF membrane system was proposed. (C) 2015 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
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