典型文献
Tuning the reversible chemisorption of hydroxyl ions to promote the electrocatalysis on ultrathin metal-organic framework nanosheets
文献摘要：
Interfacial engineering to alter the configuration of active sites in heterogeneous catalysts is a potential strategy for activity enhancement,but it remains unelucidated for metal-organic frameworks (MOFs).Here,we demonstrate that the surface of two-dimensional Co-based MOF is modified by decorating Ag quantum dots (QDs) simply through in-situ reduction of Ag+ ions.Toward oxygen evolution reaction(OER),it reveals that the catalysis is mediated by the reversible redox of Co sites between Co3+ and Co4+ states coupling with transfer of OH-ions.The decoration of Ag QDs decreases the redox potential of Co sites,and thus effectively decreases the overpotential of OER.The TOFs of Co sites are increased by 77 times to reach 5.4 s-1 at an overpotential of 0.35 V.We attribute the activity enhancement to the tuning of the coupling process between Co sites and OH-ions during the redox of Co sites by Ag QDs decoration based on Pourbaix analysis.
文献关键词：
中图分类号：
作者姓名：
Hong Yu;Yao Jing;Cheng-Feng Du;Jiong Wang
作者机构：
State Key Laboratory of Solidification Processing,Center of Advanced Lubrication and Seal Materials,Northwestern Polytechnical University,Xi'an 710072,Shaanxi,China;Institute of Advanced Synthesis,Northwestern Polytechnical University,Xi'an 710072,Shaanxi,China
文献出处：
引用格式：
[1]Hong Yu;Yao Jing;Cheng-Feng Du;Jiong Wang-.Tuning the reversible chemisorption of hydroxyl ions to promote the electrocatalysis on ultrathin metal-organic framework nanosheets)[J].能源化学,2022(02):71-77
A类：
unelucidated,Co4+,TOFs
B类：
Tuning,reversible,chemisorption,hydroxyl,ions,promote,electrocatalysis,ultrathin,metal,organic,nanosheets,Interfacial,engineering,alter,configuration,active,sites,heterogeneous,catalysts,strategy,activity,enhancement,remains,frameworks,MOFs,Here,demonstrate,that,surface,two,dimensional,modified,by,decorating,quantum,dots,QDs,simply,through,situ,reduction,Ag+,Toward,oxygen,evolution,reaction,OER,reveals,mediated,redox,between,Co3+,states,coupling,transfer,decoration,decreases,thus,effectively,overpotential,are,increased,times,reach,We,attribute,tuning,process,during,Pourbaix,analysis
AB值：
0.511329
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