Base Metal Photocatalysts: A Bright Future in Photoredox Catalysis?
Subrata Pal, Martin Pauze, Negin Shafiei, Spencer P. Pitre
TL;DR
This paper explores using common base metals instead of rare ones in light-driven chemical reactions to make the process more sustainable.
Contribution
The paper reviews strategies and recent examples of using base metal photocatalysts for sustainable chemical synthesis.
Findings
Base metal photocatalysts can replace precious metals in photoredox reactions.
Recent examples show base metals can be effective in various chemical transformations.
Using base metals reduces environmental impact and reliance on scarce resources.
Abstract
Photoredox catalysis is widely considered as a more sustainable alternative for performing chemical synthesis, using low-energy visible-light photons as traceless reagents to achieve the desired reactivity under mild conditions. While this has led to significant improvements in sustainability for many transformations, the environmental impact of the photocatalysts themselves is often overlooked, with many methods relying on precious metals with uncertain long-term availability. One solution that remains underexplored is the development of photocatalysts using earth-abundant base metals. This tutorial review discusses current strategies for designing effective base metal photocatalysts and highlights recent notable examples of their implementation in photoredox-catalyzed transformations.
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Taxonomy
TopicsRadical Photochemical Reactions · Advanced Photocatalysis Techniques · TiO2 Photocatalysis and Solar Cells