Exceptional activity of amino-modified rGO-immobilized PdAu nanoclusters for visible light-promoted dehydrogenation of formic acid  

作　　者：Yiyue Ding Qiuxiang Zhang Lei Zhang Qilu Yao Gang Feng Zhang-Hui Lu 

机构地区：[1]Key Laboratory of Energy Catalysis and Conversion of Nanchang,College of Chemistry and Chemical Engineering,Jiangxi Normal University,Nanchang 330022,China [2]School of Chemistry and Chemical Engineering,Nanchang University,Nanchang 330031,China

出　　处：《Chinese Chemical Letters》2024年第7期428-432,共5页中国化学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.22162014 and 22162013);Department of Science and Technology of Jiangxi Province(Nos.20212ACB204009,20212BCJL23059 and 20232ACB214002)。

摘　　要：Formic acid(FA),which is obtainable through CO_(2)hydrogenation with green hydrogen or biomass conversion,has been used as a prospective liquid organic hydrogen carrier(LOHC)because of the abundant advantages of renewability,wide availability,stability,and high volumetric capacity(53 g H_(2)/L).The development of highly efficient catalytic systems to achieve enhanced catalytic activity is attractive but still challenging.Herein,ultrafine and highly dispersed PdAu nanoclusters(NCs)anchored on amino-modified reduced graphene oxide(ArGO)were successfully synthesized via a facile impregnation-reduction method and applied as a catalyst toward formic acid dehydrogenation(FAD).Benefiting from the promoting effect of amino groups,the strain and ligand effect in the alloy,and the Mott–Schottky effect between PdAu NCs and ArGO,the resultant PdAu/ArGO affords an ultrahigh activity under visible light irradiation with an exceptional turnover frequency value of 10,699.5 h^(-1)at 298 K without any additives,more than 2.6times improvement than that under dark,which is the highest among all reported catalysts under the same conditions.This study provides a green and convenient strategy for developing more efficient and sustainable FAD catalysts and promotes the effective utilization of FA as a prospective renewable LOHC.

关 键 词：Visible-light-enhanced Hydrogen production Formic acid Pd-Au Heterogeneous catalyst 

分 类 号：TQ426[化学工程]