The 8th China-Africa Youth Festival was a precious opportunity to not only learn about Chinese culture but also to explore the rich tapestry of cultures of different African countries.Participants had the chance to ta...The 8th China-Africa Youth Festival was a precious opportunity to not only learn about Chinese culture but also to explore the rich tapestry of cultures of different African countries.Participants had the chance to talk to young leaders from across the continent,fostering new bonds and connections that can potentially benefit everyone involved in the future.This cultural exchange not only broadened our understanding but also paved the way for collaboration and enduring friendships that could be good for personal development.展开更多
As a carbon-free energy carrier,hydrogen has become the pivot for future clean energy,while efficient hydrogen production and combustion still require precious metal-based catalysts.Single-atom catalysts(SACs)with hig...As a carbon-free energy carrier,hydrogen has become the pivot for future clean energy,while efficient hydrogen production and combustion still require precious metal-based catalysts.Single-atom catalysts(SACs)with high atomic utilization open up a desirable perspective for the scale applications of precious metals,but the general and facile preparation of various precious metal-based SACs remains challenging.Herein,a general movable printing method has been developed to synthesize various precious metal-based SACs,such as Pd,Pt,Rh,Ir,and Ru,and the features of highly dispersed single atoms with nitrogen coordination have been identified by comprehensive characterizations.More importantly,the synthesized Pt-and Ru-based SACs exhibit much higher activities than their corresponding nanoparticle counterparts for hydrogen oxidation reaction and hydrogen evolution reaction(HER).In addition,the Pd-based SAC delivers an excellent activity for photocatalytic hydrogen evolution.Especially for the superior mass activity of Ru-based SACs toward HER,density functional theory calculations confirmed that the adsorption of the hydrogen atom has a significant effect on the spin state and electronic structure of the catalysts.展开更多
文摘The 8th China-Africa Youth Festival was a precious opportunity to not only learn about Chinese culture but also to explore the rich tapestry of cultures of different African countries.Participants had the chance to talk to young leaders from across the continent,fostering new bonds and connections that can potentially benefit everyone involved in the future.This cultural exchange not only broadened our understanding but also paved the way for collaboration and enduring friendships that could be good for personal development.
基金National Natural Science Foundation of China,Grant/Award Numbers:62105083,22109034,22109035,52164028Start-up Research Foundation of Hainan University,Grant/Award Numbers:KYQD(ZR)-20008,KYQD(ZR)-20082,KYQD(ZR)-20083,KYQD(ZR)-20084,KYQD(ZR)-21065,KYQD(ZR)-21124,KYQD(ZR)-21125+4 种基金Basic and Applied Basic Research Foundation of Guangdong Province,Grant/Award Number:2019A1515110558Hainan Provincial Postdoctoral Science Foundation,Grant/Award Number:RZ2100007123Hainan Province Science and Technology Special Fund,Grant/Award Numbers:ZDYF2020037,ZDYF2020207Hainan Provincial Natural Science Foundation,Grant/Award Numbers:222MS009,222RC548The specific research fund of The Innovation Platform for Academicians of Hainan Province。
文摘As a carbon-free energy carrier,hydrogen has become the pivot for future clean energy,while efficient hydrogen production and combustion still require precious metal-based catalysts.Single-atom catalysts(SACs)with high atomic utilization open up a desirable perspective for the scale applications of precious metals,but the general and facile preparation of various precious metal-based SACs remains challenging.Herein,a general movable printing method has been developed to synthesize various precious metal-based SACs,such as Pd,Pt,Rh,Ir,and Ru,and the features of highly dispersed single atoms with nitrogen coordination have been identified by comprehensive characterizations.More importantly,the synthesized Pt-and Ru-based SACs exhibit much higher activities than their corresponding nanoparticle counterparts for hydrogen oxidation reaction and hydrogen evolution reaction(HER).In addition,the Pd-based SAC delivers an excellent activity for photocatalytic hydrogen evolution.Especially for the superior mass activity of Ru-based SACs toward HER,density functional theory calculations confirmed that the adsorption of the hydrogen atom has a significant effect on the spin state and electronic structure of the catalysts.
