Heterogeneous fcc-Pt/hcp-PtBi Thick-Edge Nanoplates with Enhanced Activity for Formic Acid Oxidation
Source abstract
Abstract
Rational design of Pt-based alloy electrocatalysts with heterostructures and 3D nanoplate morphology remains a great challenge. Herein, we advance a facile wet-chemical synthesis of heterogeneous fcc-Pt/hcp-PtBi thick-edge nanoplates (PtBi NPs) of 3.1 nm in thickness with a tunable edge width range from 3.7 to 7.0 nm. The preferential absorption of Br– ions and the excessive input of the Pt precursor play the crucial roles in the formation of the PtBi NPs. Owing to the unique structure and the heterogeneous feature, these PtBi NPs exhibited enhanced catalytic activity and stability for the oxidation of formic acid in comparison to commercial Pt/C. The best catalytic performance of Pt85Bi15 NPs demonstrated the existence of the synergistic effect between intermetallic hcp-PtBi and fcc-Pt.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Catalytic Processes in Materials Science · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China
Funding
Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China
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