Preparation of Ag/C fiber with nanostructure through in situ thermally induced redox reaction between PVA and AgNO3 and its catalysis for 4-nitrophenol reduction
POLYMERS FOR ADVANCED TECHNOLOGIES(2020)
Abstract
A novel synthesized Ag/C fibrous catalyst based on in situ thermally induced redox reaction of PVA/AgNO3 composite fibers was proposed. Utilizing the plasticization and complexation of AgNO3 solution, the melt spinning of PVA/AgNO3 composites was accomplished. Through the in situ thermally induced redox reaction on PVA/AgNO3 composite fibers combined with carbonization of PVA and reduction of Ag+, the synthesized Ag/C fibrous catalyst was prepared with nanosilver particles with average diameter of 130 nm immobilized on the loose microstructural carbon layers. The synthesized Ag/C fibrous catalyst exhibited excellent catalytic activity and reused for at least five cycles for the reduction of 4-nitrophenol, which may hold great promise in effective and eco-friendly waste water treatment.
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Key words
4-nitrophenol,Ag,C fibrous catalyst,in situ thermally induced redox reaction,PVA,AgNO3 composite fibers
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