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Palladium-ytterbium bimetallic electrocatalysts supported on carbon black, titanium suboxide, or poly(diallyldimethylammonium chloride)-functionalized titanium suboxide towards methanol oxidation in alkaline media
Gong, Yafeng1,2; He, Yinghua3; Li, An4; Wang, Yi2; Liu, Jiehua1; Qi, Tao2
2018-10-01
Source PublicationIONICS
ISSN0947-7047
Volume24Issue:10Pages:3085-3094
Abstract

Palladium-ytterbium (Pd-Yb) bimetallic catalysts with different Pd/Yb ratios supported on carbon black (20%Pd-x%Yb/C, x = 0, 1, 5, 10, and 15) were prepared by a sodium borohydride reduction method. The 20%Pd-5%Yb/C catalyst exhibited the best electrocatalytic activity towards methanol oxidation in alkaline media. The improved electrocatalytic activity and stability of 20%Pd-5%Yb/C can be explained by a bi-functional mechanism. In addition, the higher content of metallic palladium caused by the addition of ytterbium also contributes to the better catalytic activity of the 20%Pd+5%Yb/C catalyst. In view of the good electrocatalytic performance of 20%Pd+5%Yb/C, the 20%Pd+5%Yb catalyst supported on titanium suboxide (20%Pd+5%Yb/Ti4O7) was prepared. However, the Pd-Yb particles supported on Ti4O7 were seriously agglomerated. To improve the dispersion status of alloy particles, the Ti4O7 was functionalized with poly(diallyldimethylammonium chloride) (Ti4O7-PDDA). Electrochemical characterizations showed that no matter Ti4O7 or Ti4O7-PDDA as supports, Pd-Yb catalysts exhibited better catalytic activity than 20%Pd-5%Yb/C. The improvement mainly results from the further increase of metallic Pd due to the presence of Ti4O7.

KeywordPd-yb/c Electrocatalysts Methanol Oxidation Titaniumsuboxide Poly(Diallyldimethylammonium Chloride)
DOI10.1007/s11581-018-2506-6
Language英语
WOS KeywordFormic-acid Electrooxidation ; Reduced Graphene Oxide ; Pd Nanoparticles ; Fuel-cell ; Facile Synthesis ; Catalysts ; Nanotubes ; Nanocomposite ; Fabrication ; Composites
Funding ProjectKey Research Program of Frontier Sciences of Chinese Academy of Sciences[QYZDJ-SSW-JSC021] ; Chinese National Programs for High Technology Research and Development[2014AA06A513] ; 973 Program[2015CB251303]
WOS Research AreaChemistry ; Electrochemistry ; Physics
WOS SubjectChemistry, Physical ; Electrochemistry ; Physics, Condensed Matter
Funding OrganizationKey Research Program of Frontier Sciences of Chinese Academy of Sciences ; Chinese National Programs for High Technology Research and Development ; 973 Program
WOS IDWOS:000445155700017
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/25989
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Yi; Liu, Jiehua
Affiliation1.Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Beijing Normal Univ, Expt High Sch, Beijing 100032, Peoples R China
4.Lanzhou Univ Technol, Dept Chem Engn, Coll Petrochem Engn, Lanzhou 730050, Gansu, Peoples R China
Recommended Citation
GB/T 7714
Gong, Yafeng,He, Yinghua,Li, An,et al. Palladium-ytterbium bimetallic electrocatalysts supported on carbon black, titanium suboxide, or poly(diallyldimethylammonium chloride)-functionalized titanium suboxide towards methanol oxidation in alkaline media[J]. IONICS,2018,24(10):3085-3094.
APA Gong, Yafeng,He, Yinghua,Li, An,Wang, Yi,Liu, Jiehua,&Qi, Tao.(2018).Palladium-ytterbium bimetallic electrocatalysts supported on carbon black, titanium suboxide, or poly(diallyldimethylammonium chloride)-functionalized titanium suboxide towards methanol oxidation in alkaline media.IONICS,24(10),3085-3094.
MLA Gong, Yafeng,et al."Palladium-ytterbium bimetallic electrocatalysts supported on carbon black, titanium suboxide, or poly(diallyldimethylammonium chloride)-functionalized titanium suboxide towards methanol oxidation in alkaline media".IONICS 24.10(2018):3085-3094.
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