Issue

Vol. 18 (2026)

Solar-Driven Redox Reactions with Metal Halide Perovskites Heterogeneous Structures

https://doi.org/10.1007/s40820-025-01886-y
Qing Guo
Xi’an Key Laboratory of Sustainable Energy Material Chemistry, Engineering Research Center of Energy Storage Materials and Devices, School of Chemistry, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
Jin‑Dan Zhang
Xi’an Key Laboratory of Sustainable Energy Material Chemistry, Engineering Research Center of Energy Storage Materials and Devices, School of Chemistry, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
Jian Li
Department of Physics, Zhejiang University of Technology, Hangzhou 310023, People’s Republic of China
Xiyuan Feng
School of Microelectronics, Northwestern Polytechnical University, Xi’an 710129, People’s Republic of China

Corresponding Author: Xiyuan Feng

fengxy@nwpu.edu.cn

Nano-Micro Letters, Vol. 18 (2026), Article Number: 49

Abstract

Metal halide perovskites (MHPs) with striking electrical and optical properties have appeared at the forefront of semiconductor materials for photocatalytic redox reactions but still suffer from some intrinsic drawbacks such as inferior stability, severe charge-carrier recombination, and limited active sites. Heterojunctions have recently been widely constructed to improve light absorption, passivate surface for enhanced stability, and promote charge-carrier dynamics of MHPs. However, little attention has been paid to the review of MHPs-based heterojunctions for photocatalytic redox reactions. Here, recent advances of MHPs-based heterojunctions for photocatalytic redox reactions are highlighted. The structure, synthesis, and photophysical properties of MHPs-based heterojunctions are first introduced, including basic principles, categories (such as Schottky junction, type-I, type-II, Z-scheme, and S-scheme junction), and synthesis strategies. MHPs-based heterojunctions for photocatalytic redox reactions are then reviewed in four categories: H2 evolution, CO2 reduction, pollutant degradation, and organic synthesis. The challenges and prospects in solar-light-driven redox reactions with MHPs-based heterojunctions in the future are finally discussed.


Highlights:
1 This paper reviews the fundamentals and research progress of metal halide perovskites (MHPs)-based heterojunctions for solar-driven redox reactions.
2 A comprehensive summary is presented for the construction of various MHPs-based heterojunctions (e.g., Schottky-junction, type-I/II, Z-scheme, and S-scheme).
3 The versatile use of MHPs-based heterojunctions in key photocatalytic redox reactions are summarized, including H2 evolution, CO2 reduction, pollutant degradation, and organic synthesis.

Keywords

Metal halide perovskite Heterojunction Redox reaction Solar-to-chemical conversion
Guo, Qing, Jin‑Dan Zhang, Jian Li, and Xiyuan Feng. 2025. “Solar-Driven Redox Reactions With Metal Halide Perovskites Heterogeneous Structures”. Nano-Micro Letters 18 (September):49. https://doi.org/10.1007/s40820-025-01886-y.
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