Single-Precursor to Dual-Function: A Transformable Metal-Organic Framework Nanoplatform for Photocatalytic H₂ Evolution and CO₂ Reduction.

Authors

Yi Lu, Yifan Wang, Ke Ye, Zhihai Ke

Published in

ACS applied materials & interfaces. Jul 03, 2026. Epub Jul 03, 2026.

Abstract

Precisely engineered nanoplatforms capable of controlled structural evolution from atomically dispersed sites to confined nanoparticles provide opportunities for multifunctional solar fuel production. Herein, we report a "two-in-one" photocatalytic strategy based on a transformable metal-organic framework (MOF) nanoplatform that enables two distinct solar fuel pathways from a single precursor. Microwave-assisted atomic-level engineering affords Pt₁/In₂O₃/UiO-66-NH₂, a nanostructured composite featuring atomically dispersed Pt sites anchored within an In₂O₃-modified MOF architecture. This atomic-scale configuration delivers efficient visible-light-driven H₂ evolution with a rate of 2749.6 μmol g^-1 h^-1, aided by favorable hydrogen adsorption energy (ΔG_H* = -0.39 eV). Controlled pyrolysis transforms the same precursor into Pt_NP/In₂O₃/N-C, in which confined Pt nanoparticles (2.3 ± 0.4 nm) are embedded in a conductive N-doped carbon matrix, enabling efficient photocatalytic CO₂-to-CO conversion with a CO production rate of 4758.1 μmol g^-1 h^-1. This work demonstrates how controlled atomic-to-nanoscale structural evolution within a unified MOF-derived platform can direct functional specialization, providing a design principle for multifunctional photocatalytic systems.

PMID:
42397385
Bibliographic data and abstract were imported from PubMed on 03 Jul 2026.

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