期刊
NANO LETTERS
卷 21, 期 4, 页码 1620-1627出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c04148
关键词
Lead-free perovskite; Morphology control; 2D materials; Photocatalytic reaction; CO2 reduction
类别
资金
- Brown University
- Alfred P. Sloan Foundation through the Sloan Research Fellowship program
- National Science Foundation through the NSF CAREER program [DMR-1943930]
- National Science Foundation through the NSF CBET program [CBET-1936223]
This study successfully synthesized two-dimensional nanoplatelets of Cs2AgBiX6 (X = Cl, Br, I) through a newly developed synthetic procedure, demonstrating the morphology control achievable in lead-free double perovskite materials and the better performance in photocatalytic CO2 reduction of Cs2AgBiBr6 nanoplatelets.
Morphology control represents an important strategy for the development of functional nanomaterials and has yet to be achieved in the case of promising lead-free double perovskite materials so far. In this work, high-quality Cs2AgBiX6 (X = Cl, Br, I) two-dimensional nanoplatelets were synthesized through a newly developed synthetic procedure. By analyzing the optical, morphological, and structural evolutions of the samples during synthesis, we elucidated that the growth mechanism of lead-free double perovskite nanoplatelets followed a lateral growth process from mono-octahedral-layer (half-unit-cell in thickness) cluster-based nanosheets to multilayer (three to four unit cells in thickness) nanoplatelets. Furthermore, we demonstrated that Cs2AgBiBr6 nanoplatelets possess a better performance in photocatalytic CO2 reduction compared with their nanocube counterpart. Our work demonstrates the first example with two-dimensional morphology of this important class of lead-free perovskite materials, shedding light on the synthetic manipulation and the application integration of such promising materials.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据