期刊
JOURNAL OF NANOPARTICLE RESEARCH
卷 12, 期 2, 页码 449-456出版社
SPRINGER
DOI: 10.1007/s11051-009-9659-1
关键词
Bimetallic nanoparticles; Carbon nanotubes; Cyclodextrin; Trichloroethylene; Water resources; Environment
资金
- Department of Science and Technology's Centre of Excellence in Strong Materials (DST CoESM), University of Johannesburg
- National Research Foundation (NRF)
Nanoscale bimetallic particles of nickel on iron were supported on carbon nanotubes and then co-polymerized with beta-cyclodextrin (CNTs/CD) and the resulting polymers applied to the degradation of pollutants in water. The bimetallic nanoparticles (BMNPs) were first embedded on functionalized carbon nanotubes (f-CNTs) before being copolymerized with beta cyclodextrin (beta-CD) and hexamethylene diisocyanate (HMDI) forming a water-insoluble polyurethane. The particle size and distribution of BMNPs were determined by Transmission Electron Microscopy (TEM), and the surface area was determined by using the Brunauer-Emmett-Teller (BET) method. Energy dispersive X-ray spectroscopy (EDXS) was used to confirm the formation of the BMNPs. Degradation of trichloroethylene (TCE) as a model pollutant was studied and more than 98% reduction in TCE was achieved by the polymers. Polymers with the BMNPs maintained their efficiency in degrading TCE after several cycles compared to metal-free polymers. The degradation was monitored by using gas chromatography-mass spectrometry (GC-MS), while the production of chlorides was verified by using ion chromatography (IC). Atomic absorption spectroscopy (AAS) was employed to determine the possible leaching of the BMNPs
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