The trace amount of CO in H2-rich gas poisons Pt electrode when it is adopted as feedstock for proton-exchange-membrane fuel cells.Preferential oxidation of CO(PROX)is a promising approach to selectively oxidize the t...The trace amount of CO in H2-rich gas poisons Pt electrode when it is adopted as feedstock for proton-exchange-membrane fuel cells.Preferential oxidation of CO(PROX)is a promising approach to selectively oxidize the trace amount of CO while keeping H2 unoxidized.Catalyst plays important roles in PROX.To date,enormous catalysts have been developed for PROX.Summarizing the catalysts developed for PROX and unveiling the reaction mechanism could definitely advance this research field.Herein,in this review,according to the nature of the active sites on the catalysts,we classify the catalysts into group VIII metal-based catalyst,group IB metal-based catalysts,group VIII-group IB bimetallic catalysts,transitional metal oxide catalysts as well as others,describe the progress of the catalysts in PROX in the latest five years,and extract the underlying reaction mechanism,with the aim to provide guidance for the rational design of efficient catalysts in the future.展开更多
Graphene/polyester staple sponge(GPSS)is a high-performance adsorbent for the cleanup of crude oil spill,but the use of hydrazine hydrate as the reducing agent for the preparation of GPSS is not friendly to the enviro...Graphene/polyester staple sponge(GPSS)is a high-performance adsorbent for the cleanup of crude oil spill,but the use of hydrazine hydrate as the reducing agent for the preparation of GPSS is not friendly to the environment.Herein,we reported that graphene oxide/polyester staple composite could be hydrothermally reduced by bioresource glucose to prepare GPSS of similar performance.GPSS could be applied in the absorption of oils and organic solvents thanks to its large pore volume and hydrophobicity.The absorption capacity of the novel glucose-reduced GPSS was competitive to those of the most effective absorbents for oil spill cleanup.The used GPSS could be easily regenerated by soaking in ethanol to remove the absorbed oil.The green synthesis,high oil absorption performance and easy recycling of the glucose-reduced GPSS make it a good candidate for cleaning oil spills.展开更多
基金support from the National Natural Science Foundation of China(No.21902116)the Scientific Research Foundation of Liaoning province of China(No.JQL202015403).
文摘The trace amount of CO in H2-rich gas poisons Pt electrode when it is adopted as feedstock for proton-exchange-membrane fuel cells.Preferential oxidation of CO(PROX)is a promising approach to selectively oxidize the trace amount of CO while keeping H2 unoxidized.Catalyst plays important roles in PROX.To date,enormous catalysts have been developed for PROX.Summarizing the catalysts developed for PROX and unveiling the reaction mechanism could definitely advance this research field.Herein,in this review,according to the nature of the active sites on the catalysts,we classify the catalysts into group VIII metal-based catalyst,group IB metal-based catalysts,group VIII-group IB bimetallic catalysts,transitional metal oxide catalysts as well as others,describe the progress of the catalysts in PROX in the latest five years,and extract the underlying reaction mechanism,with the aim to provide guidance for the rational design of efficient catalysts in the future.
基金National Program for Support of Top-notch Young Professionals,the National Natural Science Foundation of China(Grant No.21307101)the Fundamental Research Funds for the Central Universities,Southwest Minzu University(Grant No.2016NZDFH01).
文摘Graphene/polyester staple sponge(GPSS)is a high-performance adsorbent for the cleanup of crude oil spill,but the use of hydrazine hydrate as the reducing agent for the preparation of GPSS is not friendly to the environment.Herein,we reported that graphene oxide/polyester staple composite could be hydrothermally reduced by bioresource glucose to prepare GPSS of similar performance.GPSS could be applied in the absorption of oils and organic solvents thanks to its large pore volume and hydrophobicity.The absorption capacity of the novel glucose-reduced GPSS was competitive to those of the most effective absorbents for oil spill cleanup.The used GPSS could be easily regenerated by soaking in ethanol to remove the absorbed oil.The green synthesis,high oil absorption performance and easy recycling of the glucose-reduced GPSS make it a good candidate for cleaning oil spills.
