Enhanced dechlorination of trichloroethylene using electrospun polymer nanofibrous mats immobilized with iron/palladium bimetallic nanoparticles
作者： Hui Ma , Yunpeng Huang , Mingwu Shen , Rui Guo , Xueyan Cao
DOI: 10.1016/J.JHAZMAT.2011.11.038
关键词:
摘要: Abstract Fe/Pd bimetallic nanoparticles (NPs) have held great promise for treating trichloroethylene (TCE)-contaminated groundwater, without the accumulation of chlorinated intermediates. However, conventionally used colloidal NPs usually aggregate rapidly, resulting in a reduced reactivity. To reduce particle aggregation, we employed electrospun polyacrylic acid (PAA)/polyvinyl alcohol (PVA) polymer nanofibers as nanoreactor to immobilize NPs. In study, water-stable PAA/PVA nanofibrous mats were complexed with Fe (III) ions via binding free carboxyl groups PAA subsequent formation and immobilization zero-valent iron (ZVI) then formed by partial reduction Pd(II) ZVI The containing diameter 2.8 nm characterized scanning electron microscopy, energy-dispersive spectroscopy, transmission thermogravimetric analysis, inductively coupled plasma-atomic emission spectroscopy. NP-containing exhibited higher reactivity than that or dechlorination (TCE), which was model contaminant. With high surface area volume ratio, porosity, reusability fibrous immobilized NPs, composite should be amenable applications remediation various environmental contaminants.
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sci-hub.se 参考文章(37)
Wei-xian Zhang, Nanoscale Iron Particles for Environmental Remediation: An Overview Journal of Nanoparticle Research. ,vol. 5, pp. 323- 332 ,(2003) , 10.1023/A:1025520116015
Wei-xian Zhang, Chuan-Bao Wang, Hsing-Lung Lien, Treatment of chlorinated organic contaminants with nanoscale bimetallic particles Catalysis Today. ,vol. 40, pp. 387- 395 ,(1998) , 10.1016/S0920-5861(98)00067-4
Qingguo Huang, Xiangyang Shi, Roger A. Pinto, Elijah J. Petersen, Walter J. Weber, Tunable synthesis and immobilization of zero-valent iron nanoparticles for environmental applications. Environmental Science & Technology. ,vol. 42, pp. 8884- 8889 ,(2008) , 10.1021/ES8015588
Xiangyu Wang, Chao Chen, Huiling Liu, Jun Ma, Characterization and Evaluation of Catalytic Dechlorination Activity of Pd/Fe Bimetallic Nanoparticles Industrial & Engineering Chemistry Research. ,vol. 47, pp. 8645- 8651 ,(2008) , 10.1021/IE701762D
Maria V Nesterova, Sarah A Walton, John Webb, Nanoscale iron(III) oxyhydroxy aggregates formed in the presence of functional water-soluble polymers: models for iron(III) biomineralisation processes Journal of Inorganic Biochemistry. ,vol. 79, pp. 109- 118 ,(2000) , 10.1016/S0162-0134(99)00246-9
Feng He, Dongye Zhao, Juncheng Liu, Christopher B. Roberts, Stabilization of Fe−Pd Nanoparticles with Sodium Carboxymethyl Cellulose for Enhanced Transport and Dechlorination of Trichloroethylene in Soil and Groundwater Industrial & Engineering Chemistry Research. ,vol. 46, pp. 29- 34 ,(2007) , 10.1021/IE0610896
Hyeok Choi, Souhail R. Al-Abed, Shirish Agarwal, Effects of aging and oxidation of palladized iron embedded in activated carbon on the dechlorination of 2-chlorobiphenyl. Environmental Science & Technology. ,vol. 43, pp. 4137- 4142 ,(2009) , 10.1021/ES803535B
Feng He, Dongye Zhao, Preparation and characterization of a new class of starch-stabilized bimetallic nanoparticles for degradation of chlorinated hydrocarbons in water. Environmental Science & Technology. ,vol. 39, pp. 3314- 3320 ,(2005) , 10.1021/ES048743Y
W. Scott Orth, Robert W. Gillham, Dechlorination of Trichloroethene in Aqueous Solution Using Fe0 Environmental Science & Technology. ,vol. 30, pp. 66- 71 ,(1996) , 10.1021/ES950053U
Shili Xiao, Hui Ma, Mingwu Shen, Shanyuan Wang, Qingguo Huang, Xiangyang Shi, Excellent copper(II) removal using zero-valent iron nanoparticle-immobilized hybrid electrospun polymer nanofibrous mats Colloids and Surfaces A: Physicochemical and Engineering Aspects. ,vol. 381, pp. 48- 54 ,(2011) , 10.1016/J.COLSURFA.2011.03.005