In:
Carbon Neutralization, Wiley, Vol. 1, No. 3 ( 2022-12), p. 298-305
Abstract:
Lead‐free halide double perovskites (DPs) have attracted great attention due to their stability, nontoxicity, and good photophysical properties. Herein, environmentally friendly small‐bandgap Cs 2 CuSbCl 6 and Cs 4 CuSb 2 Cl 12 DPs microcrystals (MCs) are prepared via a solvent synthesis technique. This study also reports a bottom‐up synthetic protocol for obtaining evenly distributed Cs 2 CuSbCl 6 and Cs 4 CuSb 2 Cl 12 quantum dots (QDs) utilizing a modified hot injection approach. These MCs and QDs have strong absorption throughout the visible region, indicating that they could be promising light‐absorbing materials as sunlight‐driven photocatalysts. For the first time, the efficient sunlight‐driven photocatalytic CO 2 reduction activity of these Pb‐free “green” MCs and QDs has been revealed, and a product yield of 307 μmol g −1 and an electron consumption of 1053 μmol g −1 are achieved by the Cs 4 CuSb 2 Cl 12 QDs under 3 h irradiation. Our results highlight the potential of this family of materials for photocatalytic applications.
Type of Medium:
Online Resource
ISSN:
2769-3325
,
2769-3325
Language:
English
Publisher:
Wiley
Publication Date:
2022