Ultrafine PdAg alloy nanoparticles anchored on NH2-functionalized 2D/2D TiO_(2) nanosheet/rGO composite as efficient and reusable catalyst for hydrogen release from additive-free formic acid at room temperature  

作　　者：Xi Zhao Ping Dai Dongyan Xu Xumei Tao Xien Liu Qingjie Ge 

机构地区：[1]State Key Laboratory Base of Eco-chemical Engineering,College of Chemical Engineering,Qingdao University of Science&Technology,Qingdao 266042,China [2]Shandong Provincial Key Laboratory Of Polymer Material Advanced Manufacturing Technology,College of Electromechanical Engineering,Qingdao University of Science&Technology,Qingdao 266061,China [3]Dalian National Laboratory for Clean Energy,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China [4]State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering,College of Chemistry and Chemical Engineering,Ningxia University,750021 Yinchuan,China

出　　处：《Journal of Energy Chemistry》2021年第8期455-464,I0010,共11页能源化学（英文版）

基　　金：the financial supports from the Shandong Provincial Natural Science Foundation(Grant No.ZR201910220216);the Key Research and Development Plan of Shandong Province(2019GGX104034);the Foundation of State Key Laboratory of High-efficiency Utilization of Coal,and Green Chemical Engineering(Grant No.2020-KF-18);the Taishan Scholar Program of Shandong Province(No.ts201712045)。

摘　　要：A 2 D-2 D titanium dioxide nanosheet-reduced graphene oxide(TNS-r GO)composite with better electronic conductivity and hydrophilicity was prepared by the hydrothermal method.The as-obtained TNS-r GO composite was further functionalized with 3-aminopropyltriethoxysilane(APTES)to provide a large amount of-NH2 groups on the surface for anchoring ultrafine Pd Ag alloy nanoparticles with an average particle size of 1.69 nm by a facile wet reduction approach.Benefiting from the combined effects of well-dispersed Pd Ag alloy nanoparticles,facilitated electron transfer from TNS-r GO to Pd,and increased electron density of active sites,the Pd8 Ag_(1)/NH_(2)-TNS-r GO catalyst exhibited excellent activity towards dehydrogenation of formic acid without adding any additives at 298 K,corresponding to an initial turn over frequency as high as 1090 h-1,which is much higher than that of most other state-of-theart catalysts.

关 键 词：Formic acid DEHYDROGENATION TNS-rGO composite PdAg alloy Amine-functionalization 

分 类 号：TM911.4[电气工程—电力电子与电力传动] TQ116.2[化学工程—无机化工] TQ426