Show simple item record

AuthorAhmad, Yahia H.
AuthorMohamed, Assem T.
AuthorEl-Shafei, Ahmed
AuthorAl-Qaradawi, Siham Y.
AuthorAljaber, Amina S.
Available date2024-03-25T06:42:37Z
Publication Date2020
Publication NameInternational Journal of Hydrogen Energy
ResourceScopus
ISSN3603199
URIhttp://dx.doi.org/10.1016/j.ijhydene.2020.05.020
URIhttp://hdl.handle.net/10576/53396
AbstractDirect glucose fuel cells (DGFCs) received great interest due to non-toxicity, low cost, and renewability. Herein, we demonstrated the synthesis of novel porous AuPtPd nanocrystals (NCs) via plausible one-pot synthesis route. This was implemented by reduction of the metal precursors with l-ascorbic acid in the presence of polyvinylpyrrolidone (PVP) as a structure-directing agent. TEM (transmission electron microscopy) images of the as-synthesized nanocrystals depicted porous nanodendritic morphology with particle size ranging from 20 to 30 nm. The catalytic performance of AuPtPd NCs was investigated towards glucose oxidation reaction (GOR) in alkaline medium compared to AuPt, PtPd, and Pt/C. The delivered maximum oxidation current density over AuPtPd was 10.1 mA cm−2, which is nearly 1.4, 1.8, and 3.5 times greater than AuPt, PtPd, and Pt/C, respectively. Additionally, the ternary electrocatalyst exhibited higher electrochemical stability compared to binary alloys and Pt/C counterparts. Furthermore, AuPtPd revealed lower Tafel slope for GOR compared to binary alloys and Pt/C which affirm enhanced GOR kinetics. The outstanding catalytic performance of AuPtPd NCs was attributed to the synergistic effect of the alloying elements and the high anti-poisoning effect of Au and Pd metals which facilitates the adsorption of surface hydroxyls (OH)ads on the catalyst active sites and enhances the oxidation kinetics.
SponsorThis work was supported by the Qatar National Research Fund (a member of the Qatar Foundation) [grant number NPRP 8-1912-1-354]. The statements made herein are solely the responsibility of the authors. The authors are thankful to the core lab staff of Environment and Energy Research Institute/Hamad Bin Khalifa University (QEERI/HBKU), Doha, Qatar for TEM analysis. The authors acknowledge the technical support of Central Laboratories Unit (CLU) and Center for Advanced Materials (CAM), Qatar University, Doha, Qatar.
Languageen
PublisherElsevier
SubjectAuPtPd
Fuel cells
Glucose electrooxidation
Porous nanocrystals
TitleFacile one-step synthesis of supportless porous AuPtPd nanocrystals as high performance electrocatalyst for glucose oxidation reaction
TypeArticle
Pagination19163-19173
Issue Number38
Volume Number45
dc.accessType Abstract Only


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record