Synthesis and Photocatalytic Application of Stable Lead‐Free Cs 2 AgBiBr 6 Perovskite Nanocrystals

作者：Lei Zhou, Yangfan Xu, Baixue Chen, Dai‐Bin Kuang, Cheng‐Yong Su · 发表于：Small · 年份：2018 · 被引用次数：579 · 研究领域：Perovskite Materials and Applications、Quantum Dots Synthesis And Properties、Advanced Photocatalysis Techniques

Abstract 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 Cs 2 AgBiBr 6 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 CO 2 reduction, achieving a total electron consumption of 105 µ mol g −1 under AM 1.5G illumination for 6 h. This study offers a reliable avenue for Cs 2 AgBiBr 6 perovskite nanocrystals preparation, which holds a great potential in the further photochemical applications.