Perovskite Photocatalytic CO2 Reduction or Photoredox Organic Transformation?

Jovan San Martin, Nhu Dang, Emily Raulerson, Matthew Beard, Joseph Hartenberger, Yong Yan

Research output: Contribution to journalArticlepeer-review

23 Scopus Citations

Abstract

Metal-halide perovskites have been explored as photocatalysts for CO2 reduction. We report that perovskite photocatalytic CO2 reduction in organic solvents is likely problematic. Instead, the detected products (i.e., CO) likely result from a photoredox organic transformation involving the solvent. Our observations have been validated using isotopic labeling experiments, band energy analysis, and new control experiments. We designed a typical perovskite photocatalytic setup in organic solvents that led to CO production of up to ≈1000 μmol g−1 h−1. CO2 reduction in organic solvents must be studied with extra care because photoredox organic transformations can produce orders of magnitude higher rate of CO or CH4 than is typical for CO2 reduction routes. Though CO2 reduction is not likely to occur, in situ CO generation is extremely fast. Hence a suitable system can be established for challenging organic reactions that use CO as a feedstock but exploit the solvent as a CO surrogate.

Original languageAmerican English
Article numbere202205572
Number of pages8
JournalAngewandte Chemie - International Edition
Volume61
Issue number39
DOIs
StatePublished - 2022

Bibliographical note

Publisher Copyright:
© 2022 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.

NREL Publication Number

  • NREL/JA-5900-82504

Keywords

  • CO Surrogate
  • CO Reduction
  • Perovskite
  • Photocatalytic Organic Reactions
  • Photoredox

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