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Electrochemical promotion of catalysis over Pd nanoparticles for CO2 reduction
Cai, Fan1,3; Gao, Dunfeng1; Zhou, Hu2; Wang, Guoxiong1; He, Ting1,3; Gong, Huimin1; Miao, Shu1; Yang, Fan1; Wang, Jianguo2; Bao, Xinhe1
Source PublicationCHEMICAL SCIENCE
2017
ISSN2041-6520
DOI10.1039/c6sc04966d
Volume8Issue:4Pages:2569-2573
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordCARBON-DIOXIDE ; ELECTROCATALYTIC REDUCTION ; PALLADIUM CATALYSTS ; ROOM-TEMPERATURE ; AQUEOUS-SOLUTION ; IONIC LIQUID ; FORMIC-ACID ; HYDROGEN ; SURFACE ; FORMATE
AbstractElectrochemical promotion of catalysis (EPOC) has been shown to accelerate the rate of many heterogeneous catalytic reactions; however, it has rarely been reported in low-temperature aqueous electrochemical reactions. Herein, we report a significant EPOC effect for the CO2 reduction to generate formate over Pd nanoparticles (NPs) in a 1 M KHCO3 aqueous solution. By applying a negative potential over differently-sized Pd NPs, the rate of formate production is greatly improved as compared to that at an open-circuit voltage, with a rate enhancement ratio ranging from 10 to 143. The thermocatalytic and electrocatalytic reduction of CO2 compete with each other and are promoted by the applied negative potential and H-2 in the feeds, respectively. Inspired by the EPOC effect, a composite electrode containing Pd/C and Pt/C catalysts on different sides of a carbon paper was constructed for catalyzing the CO2 reduction without adding H-2 to the feeds. Water electrolysis over Pt NPs generates H-2, which then effectively promotes formate production over Pd NPs.
Language英语
WOS IDWOS:000397560500008
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/169461
Collection中国科学院大连化学物理研究所
Corresponding AuthorWang, Guoxiong; Bao, Xinhe
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, CAS Ctr Excellence Nanosci, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Zhejiang Univ Technol, Coll Chem Engn, Hangzhou 310032, Zhejiang, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Cai, Fan,Gao, Dunfeng,Zhou, Hu,et al. Electrochemical promotion of catalysis over Pd nanoparticles for CO2 reduction[J]. CHEMICAL SCIENCE,2017,8(4):2569-2573.
APA Cai, Fan.,Gao, Dunfeng.,Zhou, Hu.,Wang, Guoxiong.,He, Ting.,...&Bao, Xinhe.(2017).Electrochemical promotion of catalysis over Pd nanoparticles for CO2 reduction.CHEMICAL SCIENCE,8(4),2569-2573.
MLA Cai, Fan,et al."Electrochemical promotion of catalysis over Pd nanoparticles for CO2 reduction".CHEMICAL SCIENCE 8.4(2017):2569-2573.
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