Stabilizing Cu 0 ─Cu δ+ Active Centers via Strong Metal–Support Interaction Enforced Intermetallic Cu 3 Pt‐Cu Heterointerfaces for Self–Powered Waste to Wealth Catalysis

作者：Arunpandiyan Surulinathan, Zulakha Zafar, Xin Long, Rida Javed, Fuyu Liu, Jingqi Liu, Zhiwei Ye, Renfei Feng, Ning Chen, Yong Zhang, Xian‐Zhu Fu, Bin Zhao, Jing‐Li Luo · 发表于：Advanced Functional Materials · 年份：2026 · DOI：10.1002/adfm.202531786 · 被引用次数：3 · 研究领域：Ammonia Synthesis and Nitrogen Reduction、Electrocatalysts for Energy Conversion、Catalysis for Biomass Conversion

ABSTRACT Developing a self–sustained catalytic system capable of transforming chemical wastes into useful fuels and chemicals represents a vital step toward sustainable energy conversion. Herein, we design strong metal–support interaction (SMSI) enforced intermetallic Cu 3 Pt‐Cu heterointerface that stabilize Cu 0 –Cu δ+ active centers by enabling ohmic contact and interfacial charge coupling. The formation of heterointerface of Cu 3 Pt‐Cu and coexistence of Cu 0 ─Cu δ+ dual states were directly evidenced by XAFS analysis, where wavelet transform contour plots revealed Cu─Cu and Cu─Pt scattering features alongside weak Cu–O features indicative of controlled partial oxidation of the Cu core. The stabilized Cu 0 ─Cu δ+ interfaces facilitate gem–diol mediated furfural oxidation and selective nitrate reduction by bidirectional H * regulation. The “Furfural–Nitrate” coupled self–powered galvanic cell was efficiently actuated by Cu 3 Pt‐Cu/CF bifunctional catalyst. The constructed cell achieves a near–theoretical open–circuit voltage of ∼0.76 V and record peak power density (19.31 mW cm −2 ) while producing NH 3 (FE 59.9%), H 2 (FE 72.1%), and furoic acid (FE 79.5%), yielding 12.13 kWh kg −1 electricity. This work establishes a strategy to tune interfacial electronic interactions via SMSI for kinetic–promoted electrocatalysis, achieving a benchmark for the innovative hydrogen–ammonia co–production system with simultaneous electricity generation.