Up to now,facile and pollution-free routes for catalyst preparation are in high demand.In this study,a green and cost-effective strategy was successfully developed to construct platinum/graphene aerogel(Pt/GA)nanocomp...Up to now,facile and pollution-free routes for catalyst preparation are in high demand.In this study,a green and cost-effective strategy was successfully developed to construct platinum/graphene aerogel(Pt/GA)nanocomposites by the co-reduction of graphene oxides(GO)and chloroplatinic acid(H_(2)PtCl6$6H_(2)O)with the assists of g-ray irradiation in the absence of any other reductants.Characterization studies indicated that the energy of g-ray irradiation and the hole scavenger isopropanol(IPA)played a vital role in forming small Pt nanoparticles with uniform size of~3 nm on the surface of graphene aerogel(GA).Furthermore,Pt/GA synthesized with a mass ratio of 2:1(Pt/GA-2)exhibited a lowest activation energy value and outstanding catalytic properties for the reduction of 4-nitrophenol(4-NP).The excellent catalytic and cycling performance suggest that Pt/GA-2 catalyst has a promising prospect for the reduction of nitroaromatic compounds in wastewater treatment and other industrial applications.展开更多
基金This work is supported by the NSFC(No.21703193)Key Science and Technology Research Projects of Henan Province(No.182102310791)+1 种基金Key Scientific Research Project Plan of Colleges and Universities in Henan Province(No.18B520036)the Nanhu Scholars Program for Young Scholars of Xinyang Normal University in China.
文摘Up to now,facile and pollution-free routes for catalyst preparation are in high demand.In this study,a green and cost-effective strategy was successfully developed to construct platinum/graphene aerogel(Pt/GA)nanocomposites by the co-reduction of graphene oxides(GO)and chloroplatinic acid(H_(2)PtCl6$6H_(2)O)with the assists of g-ray irradiation in the absence of any other reductants.Characterization studies indicated that the energy of g-ray irradiation and the hole scavenger isopropanol(IPA)played a vital role in forming small Pt nanoparticles with uniform size of~3 nm on the surface of graphene aerogel(GA).Furthermore,Pt/GA synthesized with a mass ratio of 2:1(Pt/GA-2)exhibited a lowest activation energy value and outstanding catalytic properties for the reduction of 4-nitrophenol(4-NP).The excellent catalytic and cycling performance suggest that Pt/GA-2 catalyst has a promising prospect for the reduction of nitroaromatic compounds in wastewater treatment and other industrial applications.
