首页|Hetero-phase zirconia encapsulated with Au nanoparticles for boosting electrocatalytic nitrogen reduction
Hetero-phase zirconia encapsulated with Au nanoparticles for boosting electrocatalytic nitrogen reduction
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
万方数据
维普
Electrocatalytic nitrogen reduction reaction(NRR)is considered as an attractive approach for ammonia synthesis under mild conditions.A bottleneck of NRR is the exploration of efficient catalysts for accel-erating reaction kinetics,among which heterogeneous structures possessing distinct atomic arrangement could modify electronic structure,and therefore altering their NRR activity.Here,we report a facile strat-egy for fabricating hetero-phase metal oxides derived from metal organic framework that are further integrated with Au nanoparticles as NRR catalysts.The phase composition of zirconia can be easily ad-justed by simply changing the reaction temperature,where the monoclinic and tetragonal phases with the roughly close proportions have a distinct interface,leading to a strong interaction between Au and ZrO2.The enhanced interaction renders Au to be more electropositive and facilitates stronger binding to N2.As a result,a remarkable ammonia yield of 22.32 μg h-1 mgcat.-1 and a Faradaic efficiency of 31.92％can be achieved at low overpotential.This work is expected to pave the way for the design of hetero-geneous structures and the exploration of hetero-phase nanostructures in boosting the electrocatalytic NRR.
万方数据
维普
