Lead‐Free Cs2AgSbCl6 Double Perovskite Nanocrystals for Effective Visible‐Light Photocatalytic C−C Coupling Reactions

Lead halide perovskite nanocrystals (NCs) have been regarded as a promising potential photocatalyst, owing to their high molar extinction coefficient, low economic cost, adjustable light absorption range, and ample surface active sites. However, the toxicity of lead and its inherent instability in w...

Full description

Saved in:
Bibliographic Details
Published in:ChemSusChem 2022-02, Vol.15 (3), p.n/a
Main Authors: Guo, Yanmei, Lou, Yongbing, Chen, Jinxi, Zhao, Yixin
Format: Article
Language:English
Subjects:
Aldehydes
Alkylation
Chemical reactions
Chemical synthesis
C−C coupling
Economic impact
Electromagnetic absorption
Lead compounds
Light irradiation
Metal halides
Nanocrystals
Perovskites
Photocatalysis
Photocatalysts
Reaction mechanisms
Toxicity
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Lead halide perovskite nanocrystals (NCs) have been regarded as a promising potential photocatalyst, owing to their high molar extinction coefficient, low economic cost, adjustable light absorption range, and ample surface active sites. However, the toxicity of lead and its inherent instability in water and polar solvents could hinder their wide application in the field of photocatalysis. Herein, with α‐alkylation of aldehydes as a model reaction, C−C bond‐forming is demonstrated in high yield by using lead‐free double perovskite Cs2AgSbCl6 NCs under visible light irradiation. Moreover, the photocatalytic performance is simply improved by rational control of the surface ligands and a reaction mechanism involving a radical intermediate is proposed. Although the stability requires further amelioration, the results indicate the enormous potential of lead‐free double perovskite NC photocatalysts for organic synthesis and chemical transformations. Perovskites take the lead: With α‐alkylation of aldehydes as a model reaction, C−C bond‐forming is achieved in high yield by using environmentally friendly and lead‐free double perovskite Cs2AgSbCl6 nanocrystals under visible light irradiation. This study indicates the enormous potential of lead‐free double perovskite photocatalysts for organic synthesis and chemical transformations.
ISSN:1864-5631
1864-564X
DOI:10.1002/cssc.202102334