Rapid Acidic Media Growth of Cs3Bi2Br9 Halide Perovskite Platelets for Photocatalytic Toluene Oxidation

被引：63

作者：

Dai, Yitao ^{[1
]}

Tueysuez, Harun ^{[1
]}

机构：

[1] Max Planck Inst Kohlenforsch, Heterogeneous Catalysis & Sustainable Energy, Kaiser Wilhelm Pl 1, D-45470 Mulheim An Der Ruhr, Germany

来源：

SOLAR RRL | 2021年 / 5卷 / 07期

关键词：

bismuth halide perovskites; Cs3Bi2Br9; platelets; photocatalytic C-H bond activation; solar energy conversion; ETHYL ACETOACETATE; POLYMERIZATION; ACTIVATION;

D O I：

10.1002/solr.202100265

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Organic ligands with long carbon chains have been widely utilized to mediate the growth of halide perovskite crystals with tunable morphologies. However, the presence of these surfactants on the surface of halide perovskites limits their performance in photocatalytic conversion applications. Herein, a rapid synthetic protocol to prepare Cs3Bi2Br9 platelets with clean surfaces and controllable thickness in a dilute H2SO4 solution after a quick cooling process in liquid nitrogen or mixtures of dry ice is reported. Electron microscopy and X-ray diffraction reveal the preferential exposure of (00l) facets in Cs3Bi2Br9 platelets with variable thickness from 100 to 500 nm. Infrared spectroscopy hints that the selective chemisorption of ethyl acetoacetate on (00l) facets of bismuth perovskites regulates the growth of the crystals. These novel lead-free halide perovskite platelets can drive the photo-oxidation of toluene to benzaldehyde with high selectivity (>= 88%) and stability over 36 h.

引用

页数：8

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