典型文献
Soluble porous organic cages as homogenizers and electron-acceptors for homogenization of heterogeneous alloy nanoparticle catalysts with enhanced catalytic activity
文献摘要：
The creation of ultrafine alloy nanoparticles(＜5 nm)that can maintain surface activity and avoid aggre-gation for heterogeneous catalysis has received much attention and is extremely challenging.Here,ultra-fine PtRh alloy nanoparticles imprisoned by the cavities of reduced chiral covalent imine cage(PtRh@RCC3)are prepared successfully by an organic molecular cage(OMC)confinement strategy,while the soluble RCC3 can act as a homogenizer to homogenize the heterogeneous PtRh alloy in solution.Moreover,the X-ray absorption near-edge structure(XANES)results show that the RCC3 can act as an electron-acceptor to withdraw electrons from Pt,leading to the formation of higher valence Pt atoms,which is beneficial to improving the catalytic activity for the reduction of 4-nitrophenol.Attributed to the synergistic effect of Pt/Rh atoms and the unique function of the RCC3,the reaction rate constants of Pt1Rh16@RCC3 are 49.6,8.2,and 5.5 times than those of the Pt1Rh16 bulk,Pt@RCC3 and Rh@RCC3,respectively.This work provides a feasible strategy to homogenize heterogeneous alloy nanoparticle cat-alysts in solution,showing huge potential for advanced catalytic application.
文献关键词：
中图分类号：
作者姓名：
Hele Guo;Yali Liu;Hongliang Dong;Wei Zong;Kaibin Chu;Weiwei Li;Zhongli Fan;Guanjie He;Yue-E Miao;Ivan P.Parkin;Feili Lai;Tianxi Liu
作者机构：
Key Laboratory of Synthetic and Biological Colloids,Ministry of Education,School of Chemical and Material Engineering,International Joint Research Laboratory for Nano Energy Composites,Jiangnan University,Wuxi 214122,China;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China;Department of Chemistry,KU Leuven,Leuven 3001,Belgium;Center for High Pressure Science and Technology Advanced Research,Shanghai 201203,China;Christopher Ingold Laboratory,Department of Chemistry,University College London,London WC1H OAJ,UK;Department of Chemical Engineering,University College London,London WC1E 7JE,UK;Department of Molecular Spectroscopy,Max Planck Institute for Polymer Research,Mainz 55128,Germany
文献出处：
引用格式：
[1]Hele Guo;Yali Liu;Hongliang Dong;Wei Zong;Kaibin Chu;Weiwei Li;Zhongli Fan;Guanjie He;Yue-E Miao;Ivan P.Parkin;Feili Lai;Tianxi Liu-.Soluble porous organic cages as homogenizers and electron-acceptors for homogenization of heterogeneous alloy nanoparticle catalysts with enhanced catalytic activity)[J].科学通报（英文版）,2022(23):2428-2437
A类：
homogenizers,imprisoned,RCC3,homogenizer,Pt1Rh16
B类：
Soluble,porous,organic,cages,acceptors,homogenization,heterogeneous,alloy,catalysts,enhanced,catalytic,activity,creation,ultrafine,nanoparticles,that,can,maintain,surface,avoid,aggre,gation,catalysis,has,received,much,attention,extremely,challenging,Here,PtRh,by,cavities,reduced,chiral,covalent,imine,prepared,successfully,molecular,OMC,confinement,strategy,while,soluble,solution,Moreover,ray,absorption,near,edge,structure,XANES,results,withdraw,electrons,from,leading,formation,higher,valence,atoms,which,beneficial,improving,reduction,nitrophenol,Attributed,synergistic,effect,unique,function,reaction,constants,times,than,those,bulk,respectively,This,work,provides,feasible,showing,huge,potential,advanced,application
AB值：
0.484702
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