Advanced Functional Materials· 2026Q1
In Situ Electrochemical Reconstruction of PtCu Alloy to Pt Cluster/CuOOH Interface for Boosted 5‐Hydroxymethylfurfural Electro‐Oxidation
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- Q1SCImago
- 2026year
Short summary
Electrochemical reconstruction of a PtCu alloy under anodic potential forms a Pt cluster/CuOOH interface, which is the true active site for 5-hydroxymethylfurfural electro-oxidation, leading to superior activity and selectivity.
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Key points
- PtCu bimetallic alloy undergoes electrochemical reconstruction under anodic potential.
- The real active sites are Pt clusters formed on a CuOOH support, not the original alloy.
- A strong Pt-O linkage at the Pt cluster/CuOOH interface enhances catalytic activity and selectivity for 5-hydroxymethylfurfural electro-oxidation.
- Theoretical calculations confirm interfacial synergy optimizes intermediate adsorption, charge transfer, and lowers energy barriers.
AI-generated from the title and abstract; the full text is not read.
Abstract
ABSTRACT Real‐time monitoring of structural evolution and identification of intrinsic active sites during electrocatalysis are vital to the rational design of high‐performance electrocatalysts. Herein, PtCu bimetallic alloy electrocatalyst is synthesized for the electrochemical 5‐hydroxymethylfurfural oxidation reaction (HMFOR). The electrochemical results show that the obtained electrocatalyst delivers superior activity and selectivity toward HMFOR with suppressed side reactions. In situ Raman and synchrotron x‐ray absorption fine structure characterizations are employed to investigate structural evolution and the electrocatalytic mechanism. Characterization results confirm that the original alloy phase is not the real active site. Driven by anodic potential, Pt─Cu bonds breakage, metallic copper is oxidized into CuOOH, and separated Pt atoms aggregate into clusters. Strong metal‐support interaction forms via Pt─O linkage, constructing a reactive Pt cluster/CuOOH interface. The theoretical calculations demonstrate that the interfacial synergy optimizes intermediate adsorption, accelerates charge transfer, lowers free energy barrier, thus boosting catalytic kinetics. This work reveals the electrochemical reconstruction behavior and structure‐performance relationship of bimetallic catalysts, offering a feasible strategy for designing advanced electrocatalysts for biomass conversion.
The authors' abstract, as published at the source. Advanced Functional Materials, 2026 · DOI ↗
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Field: Renewable Energy, Sustainability and the Environment
Renewable Energy, Sustainability and the EnvironmentEnergy