Interfacial Differentiated Recoordination Trigger Asymmetric Bi (δ⁺)-Bi (δ^-) Regions for Robust CO₂ Photosynthesis to CH₃COOH.

Authors

Zhiwei Shao, Caichao Ye, Yi Zhang, Jun Xiong, Haipeng Zuo, Wei Jiang, Jun Di

Published in

Advanced materials (Deerfield Beach, Fla.). Pages e73924. Jul 07, 2026. Epub Jul 07, 2026.

Abstract

Direct solar-driven conversion of CO₂ and H₂O into high-value-added C₂ products, such as acetic acid, represents a critical frontier challenge in artificial photosynthesis. However, its efficiency is primarily constrained by sluggish photogenerated charge migration and the dynamics limitations for C-C coupling. This paper reports a "disorder-induced reconstruction" strategy that utilizes the inherent local disorder of covalent organic frameworks (COFs) to induce the construction of asymmetric active centers on the surface of Bi₂₄O₃₁Br₁₀ (BOB), inducing atomic-scale reconstruction and spontaneously forming extended regions with asymmetric Bi(δ+)-Bi(δ-) bimetallic sites. Without the use of sacrificial agents or noble metal co-catalysts, the resulting catalyst exhibits excellent performance in the conversion of CO₂ to acetate, with a yield as high as 1.03 mmol g^-1 h^-1 and a selectivity of 97.63%. The apparent quantum efficiencies of catalyst can reach 13.75% and 8.33% at 380 and 400 nm, respectively. This work reveals a previously unknown mechanism for reconstructing inorganic surfaces into asymmetric active structural units using local disorder in organic modifiers, providing a paradigm for the design of next-generation photocatalysts.

PMID:
42411177
Bibliographic data and abstract were imported from PubMed on 07 Jul 2026.

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