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April 26, 2026ACS Materials Letters

Operando -Evolved Sn 2 S 3 /SnO 2 Heterojunction Promotes CO 2 Electroreduction to Formate via Accelerated Water Dissociation

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Authors

JLJinrong LiWZW J ZhangYTYing Tao

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Overview

Randomized trial demonstrates enhanced formate production in Sn-based catalysts, suggesting new pathways for CO2 utilization.

Key Points

  • The study aims to explore the impact of dynamic interfacial reconstruction on Sn-based catalysts for CO2 electroreduction.
  • Examined SnS2/SnO2 heterostructure that evolves into Sn2S3/SnO2 under CO2 electroreduction.
  • Utilized in situ Raman spectroscopy and attenuated total reflectance surface-enhanced infrared spectroscopy.
  • Conducted microkinetic analysis to assess water dissociation mechanisms and formate production.
  • Achieved a formate Faradaic efficiency of 90.9% with a current density of 35.2 mA·cm–2 at −1.0 V vs RHE.
  • Maintained Faradaic efficiency of formate above 85% over 70 hours.
  • Identified accelerated water dissociation and improved proton supply for *OCHO formation due to the evolved heterojunction.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/69edab424a46254e215b35e6https://doi.org/10.1021/acsmaterialslett.6c00305
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  1. 1Interface Engineering Triggered Electron Transfer Channels and Enhanced p–p Orbital Coupling: Boosting CO 2 Electroreduction to Formate Over Heterostructured CuS@SnO 22026 · 1 citations
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  3. 3Modulating *OCHO Adsorption Configuration on a Reconstructed Ag 3 Sn Quantum Dots/S–Sn Heterostructure for Selective CO 2 ‐to‐Formate Conversion2026 · 1 citations
  4. 4In situ Reconstructured Alloy Nanosheets Heterojunction for Highly Selective Electrochemical CO2 Reduction to Formate2024 · 5 citations
  5. 5A Review of the Evolving Landscape of Sn-Based Electrocatalysts for CO2 Electroreduction to Formate2026