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In situ thermolysis of Pt-carbonyl complex to form supported clean Pt nanoclusters with enhanced catalytic performance
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作者 魏桂涓 赵西夏 +4 位作者 安长华 刘俊学 王兆杰 杜坤 张军 《Science China Materials》 SCIE EI CSCD 2017年第2期131-140,共10页
Clean Pt nanoclusters with a diameter of1.0-2.4 nm,supported on reduced graphene oxide(rGO)nanosheets,were successfully synthesized by simple in situ thermolysis of a Pt-carbonyl complex.The supported Pt nanocluster... Clean Pt nanoclusters with a diameter of1.0-2.4 nm,supported on reduced graphene oxide(rGO)nanosheets,were successfully synthesized by simple in situ thermolysis of a Pt-carbonyl complex.The supported Pt nanoclusters are in an electron-deficient state because of the electron transfer between the nanoclusters and the rGO sheets.The as-prepared Pt-1 nm/rGO shows high catalytic activity for the 100%selective hydrogenation of nitrobenzene,with the turnover frequency(TOF) reaching 975.4 h^(-1)at 25℃ and 1 atm.This number is higher than the previously reported value for the heterogeneously catalyzed hydrogenation of nitrobenzene.The proposed process follows a direct hydrogenation mechanism,as is revealed by the analyses of the intermediate products.This work presents a facile and effective synthetic approach for achieving highly efficient nanocatalysts,and can be extended to obtain other metal catalysts with ultra-small sizes and excellent performance. 展开更多
关键词 HYDROGENATION NANOCLUSTERS reduced graphene oxide PLATINUM catalyst
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