Synthesis and Photocatalytic Application of Stable Lead‐Free Cs2AgBiBr6 Perovskite Nanocrystals

Lead halide perovskite nanocrystals (NCs) have demonstrated great potential as appealing candidates for advanced optoelectronic applications. However, the toxicity of lead and the intrinsic instability toward moisture hinder their mass production and commercialization. Herein, to solve such thorny p...

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Bibliographic Details
Published in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2018-03, Vol.14 (11), p.n/a
Main Authors: Zhou, Lei, Xu, Yang‐Fan, Chen, Bai‐Xue, Kuang, Dai‐Bin, Su, Cheng‐Yong
Format: Article
Language:English
Subjects:
Carbon dioxide
CO2 reduction
Commercialization
lead‐free
Light
Mass production
Moisture
Nanocrystals
Nanotechnology
Optoelectronics
perovskite
photochemistry
Stability
Toxicity
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Summary:Lead halide perovskite nanocrystals (NCs) have demonstrated great potential as appealing candidates for advanced optoelectronic applications. However, the toxicity of lead and the intrinsic instability toward moisture hinder their mass production and commercialization. Herein, to solve such thorny problems, novel lead‐free Cs2AgBiBr6 double perovskite NCs fabricated via a simple hot‐injection method are reported, which exhibit impressive stability in moisture, light, and temperature. Such materials are then applied into photocatalytic CO2 reduction, achieving a total electron consumption of 105 µmol g−1 under AM 1.5G illumination for 6 h. This study offers a reliable avenue for Cs2AgBiBr6 perovskite nanocrystals preparation, which holds a great potential in the further photochemical applications. Stable lead‐free Cs2AgBiBr6 double perovskite nanocrystals with a cubic shape and an average size of 9.5 nm are successfully synthesized via the hot‐injection route, and are employed as photocatalysts to convert CO2 into solar fuels (CO and CH4). This work offers a reliable avenue for Cs2AgBiBr6 perovskite nanocrystals preparation, which holds a great potential in the further photochemical applications.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.201703762