Abstract: Anionic modified viscose fiber is prepared from viscose fiber with sodium hydroxide as catalyst and sodium chloroacetate as modification reagent.Hyperbranched polyethylenimine (HPEI) grafted amphoteric viscose fibers are prepared from anionic viscose fiber by using HPEI as macromolecular modification reagent under a 140℃ hydrothermal environment in a high-pressure reactor.Nano gold (AuNPs) loaded amphoteric viscose fiber is prepared with HPEI grafted amphoteric viscose fiber as template,chlorauric acid as gold source and sodium borohydride as reducing agent.The products are characterized by IR,SEM and XPS.IR and SEM analysis shows that AuNPs loaded amphoteric viscose fiber is successfully prepared,and the reaction occurs mainly on the surface of the fiber while the fiber structure remains unchanged.XPS analysis shows that nitrogen and gold elements on the surface of AuNPs loaded amphoteric viscose fiber increase significantly.With AuNPs loaded amphoteric viscose fiber as catalyst,the reduction degradation rate of p-nitrophenol solution (6×10-2 mol·L-1) by sodium borohydride reaches 99.97% while the reduction degradation rate of methylene blue solution (8×10-5 mol·L-1) can reach 96.60% with an accelerated degradation reaction.
张春晓, 唐逸飞. 纳米金负载两性粘胶纤维的制备及催化性能研究[J]. 现代化工, 2021, 41(2): 177-182.
ZHANG Chun-xiao, TANG Yi-fei. Preparation of gold nanoparticles-loaded amphoteric viscose fibers and study on their catalytic performance. Modern Chemical Industry, 2021, 41(2): 177-182.
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