Y_(2)O_(3)-functionalized graphene-immobilized Ni–Pt nanoparticles for enhanced hydrous hydrazine and hydrazine borane dehydrogenation  

作　　者：Qi-Lu Yao Meng He Ya-Ru Kong Tian Gui Zhang-Hui Lu 

机构地区：[1]State-Province Joint Engineering Laboratory of Zeolite Membrane Materials,Institute of Advanced Materials(IAM),Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education,Key Laboratory of Energy Catalysis and Conversion of Nanchang,Jiangxi Normal University,Nanchang,330022,China

出　　处：《Rare Metals》2023年第10期3410-3419,共10页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Nos. 22162013 and 22162014);Natural Science Foundation of Jiangxi Province (No. 20212ACB204009);the Program of the Academic and Technical Leaders of Major Disciplines of Jiangxi Province (No. 20212BCJL23059);the Thousand Talents Plan of Jiangxi Province;the Open Project Program of State-Province Joint Engineering Laboratory of Zeolite Membrane Materials of China (No. SPJELZMM-202210)。

摘　　要：Developing efficient and highly selective catalyst to promote hydrogen generation from hydrous hydrazine(N_(2)H_(4)·H_(2)O) and hydrazine borane(N_(2)H_(4)BH_(3))remains a challenging issue for fuel cell-based hydrogen economy.In this work,ultrafine and well-dispersed bimetallic NiPt nanoparticles(3.4 nm) were successfully immobilized on Y_(2)O_(3)-functionalized graphene(Y_(2)O_(3)/rGO) without any surfactant by a simple liquid impregnation approach.It is firstly found that integration of graphene and Y_(2)O_(3) not only can facilitate the formation of ultrafine NiPt nanoparticles(NPs),but also can effectively modulate the electronic structure of NiPt NPs,thereby boosting the catalytic performance.Compared with NiPt/Y_(2)O_(3) and NiPt/rGO,the NiPt/Y_(2)O_(3)/rGO nanocomposites(NCs) show remarkable enhanced catalytic efficiency for hydrogen production from N_(2)H_(4)-H_(2)O.In particular,the optimized Ni_(0.6)Pt_(0.4/)Y_(2)O_(3)/rGO NCs display the best catalytic efficiency and 100% H_(2) selectivity for N_(2)H_(4)-H_(2)O dehydrogenation,providing a turnover frequency(TOF) of2182 h^(-1) at 323 K,which is among the highest values ever reported.Moreover,the Ni_(0.6)Pt_(0.4)/Y_(2)O_(3)/rGO NCs also exhibit an excellent catalytic performance(TOF=3191 h^(-1)) and 100% H_(2) selectively for N_(2)H_(4)BH_(3)dehydrogenation at 323 K.The outstanding catalytic results obtained provide more possibilities for the potential applications of N_(2)H_(4)·H_(2)O and N_(2)H_(4)BH_(3) as promising chemical hydrogen storage materials.

关 键 词：Hydrous hydrazine(N_(2)H_(4)·H_(2)O) Hydrazine borane(N_(2)H_(4)BH_(3)) DEHYDROGENATION GRAPHENE Catalysis 

分 类 号：TQ426[化学工程] TQ116.2