To develop highly efficient electrochemical catalysts for N2 fixation is important to sustainable ambient NH_(3) production through the N_(2) reduction reaction(NRR).Herein,we demonstrate the development of vanadium p...To develop highly efficient electrochemical catalysts for N2 fixation is important to sustainable ambient NH_(3) production through the N_(2) reduction reaction(NRR).Herein,we demonstrate the development of vanadium phosphide nanoparticle on V foil as a high-efficiency and stable catalyst for ambient NH3 production with excellent selectivity.The high Faradaic efficiency of 22%with a large NH3 yield of 8.35×10^(−11) mol·s^(−1)·cm^(−2)was obtained at 0 V vs.the reversible hydrogen electrode in acid solution,superior to all previously studied V-based NRR catalysts.Density functional theory calculations are also utilized to have an insight into the catalytic mechanism.展开更多
With the acceleration of the urban industrialization process,air pollutant emission has increased sharply,which seriously endangers the ecological environment and human beings.Solar-driven photocatalysis has the broad...With the acceleration of the urban industrialization process,air pollutant emission has increased sharply,which seriously endangers the ecological environment and human beings.Solar-driven photocatalysis has the broad-spectrum activity for various inorganic to organic pollutants at ambient temperature without harsh reaction conditions,which shows a very broad application prospect in air purification.However,the photocatalysis technology suffers from the unrevealed reaction me-chanism and the deactivation of photocatalysts,which severely limits its practical application.Currently,there is still a huge gap between basic research and industrial application in the field of photocatalytic air purification.This review summarizes recent progress on photocatalytic degradation of air pollutants and categorizes them based on the types of photocatalytic materials and air pollutants,with a focus on photocatalytic reaction mechanisms and the application scenarios of photocatalytic air purification to identify this gap.We also critically discussed the major challenges for promoting applications of photo-catalytic technology and put forward the development prospect.展开更多
To realize renewable energy conversion,it is important to develop low-cost and high-efficiency electrocatalyst for oxygen evolution reaction.In this communication,a novel bijunction CoS/CeO_(2) electrocatalyst grown o...To realize renewable energy conversion,it is important to develop low-cost and high-efficiency electrocatalyst for oxygen evolution reaction.In this communication,a novel bijunction CoS/CeO_(2) electrocatalyst grown on carbon cloth is prepared by the interface engineering.The interface engineering of CoS and CeO_(2) facilitates a rapid charge transfer from CeO_(2) to CoS.Such an electrocatalyst exhibits outstanding electrocatalytic activity with a low overpotential of 311 mV at 10 mA·cm−2 and low Tafel slope of 76.2 mV·dec−1,and is superior to that of CoS(372 mV)and CeO_(2)(530 mV)counterparts.And it has long-term durability under alkaline media.展开更多
基金supported by the National Natural Science Foundation of China(No.21575137).
文摘To develop highly efficient electrochemical catalysts for N2 fixation is important to sustainable ambient NH_(3) production through the N_(2) reduction reaction(NRR).Herein,we demonstrate the development of vanadium phosphide nanoparticle on V foil as a high-efficiency and stable catalyst for ambient NH3 production with excellent selectivity.The high Faradaic efficiency of 22%with a large NH3 yield of 8.35×10^(−11) mol·s^(−1)·cm^(−2)was obtained at 0 V vs.the reversible hydrogen electrode in acid solution,superior to all previously studied V-based NRR catalysts.Density functional theory calculations are also utilized to have an insight into the catalytic mechanism.
基金supported by the National Natural Science Foundation of China(22176029,21822601)the Excellent Youth Foundation of Sichuan Province in China(2021JDJQ0006).
文摘With the acceleration of the urban industrialization process,air pollutant emission has increased sharply,which seriously endangers the ecological environment and human beings.Solar-driven photocatalysis has the broad-spectrum activity for various inorganic to organic pollutants at ambient temperature without harsh reaction conditions,which shows a very broad application prospect in air purification.However,the photocatalysis technology suffers from the unrevealed reaction me-chanism and the deactivation of photocatalysts,which severely limits its practical application.Currently,there is still a huge gap between basic research and industrial application in the field of photocatalytic air purification.This review summarizes recent progress on photocatalytic degradation of air pollutants and categorizes them based on the types of photocatalytic materials and air pollutants,with a focus on photocatalytic reaction mechanisms and the application scenarios of photocatalytic air purification to identify this gap.We also critically discussed the major challenges for promoting applications of photo-catalytic technology and put forward the development prospect.
文摘To realize renewable energy conversion,it is important to develop low-cost and high-efficiency electrocatalyst for oxygen evolution reaction.In this communication,a novel bijunction CoS/CeO_(2) electrocatalyst grown on carbon cloth is prepared by the interface engineering.The interface engineering of CoS and CeO_(2) facilitates a rapid charge transfer from CeO_(2) to CoS.Such an electrocatalyst exhibits outstanding electrocatalytic activity with a low overpotential of 311 mV at 10 mA·cm−2 and low Tafel slope of 76.2 mV·dec−1,and is superior to that of CoS(372 mV)and CeO_(2)(530 mV)counterparts.And it has long-term durability under alkaline media.
