Supported palladium nanocubes reduced by graphene oxide and surface-cleaned for enhanced electrocatalytic activity

Highly dispersed Pd nanocubes (Pd NCs) supported on the surface of partially reduced graphene oxide (pRGO) were successfully prepared by a facile procedure. GO was used as reductant and support without any other external reducing agent been introduced, and potassium iodide (KI) was used as capping a...

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Bibliographic Details
Published in:Journal of alloys and compounds 2024-08, Vol.994, p.174697, Article 174697
Main Authors: Xie, Ruigang, Qin, Fengxiang, Zhou, Lingli, Chen, Daixiang, Liu, Jianwu, Shen, Jiefa, Yan, Shenghu
Format: Article
Language:English
Subjects:
Ethanol oxidation
Methanol oxidation
Pd nanocubes
Surface-treated
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Summary:Highly dispersed Pd nanocubes (Pd NCs) supported on the surface of partially reduced graphene oxide (pRGO) were successfully prepared by a facile procedure. GO was used as reductant and support without any other external reducing agent been introduced, and potassium iodide (KI) was used as capping agent for morphology control respectively. Catalytic activities for ethanol oxidation and methanol oxidation were greatly enhanced after excess iodine on the surface of Pd NCs was removed by being surface-treated with NaBH4 solution. [Display omitted] •Palladium nanocubes were prepared through redox reactions between graphene oxide and metal precursors in alkaline solution•Iodine ions as a morphology control agent could be removed by being treated in the ambient NaBH4 solution.•Surface cleaning technology awakens the catalytic activity of palladium cubes and further reduces graphene oxide.•Palladium nanocubes with clean surfaces exhibit enhanced activity and stability toward EOR and MOR than commercial Pd/C.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2024.174697