Ultra-small cesium silver bismuth bromide quantum dots fabricated by modified hot-injection method for highly efficient degradation of contaminants in organic solvent

被引：1

作者：

Wu, Jianhao ^{[1
]}

Wang, Xiaozhuo ^{[1
]}

Hu, Jinglei ^{[1
]}

Li, Chunyan ^{[1
]}

Shi, Linpu ^{[2
]}

Xia, Sa-Sa ^{[1
]}

Cai, Yuxing ^{[1
]}

Jia, Rongrong ^{[1
]}

Chen, Zhi ^{[1
]}

Li, Lan ^{[1
]}

机构：

[1] China Jiliang Univ, Coll Mat & Chem, Hangzhou 310018, Peoples R China

[2] Luoyang Ship Mat Res Inst, Luoyang 471023, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL SCIENCES | 2025年 / 152卷

关键词：

Cs 2 AgBiBr 6 quantum dots; perovskite; Organic dye removal; Antibiotic residue treatment; Photocatalysis of nonlead halide; Photodegradation in organic solvent; REMEDIATION;

D O I：

10.1016/j.jes.2024.06.011

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Lead-free halide perovskite material has drawn fast-growing interest due to its superior solar-conversion efficiency and nontoxic nature. In this work, we have successfully fabricated cesium silver bismuth bromide (Cs2 AgBiBr6 ) quantum dots utilizing the hot injection method. The as-synthesized quantum dots were characterized by combined techniques, which showed remarkable visible-light photocatalytic activity for organic dyes and antibiotic degradation in ethanol. Specifically, about 97% of rhodamine B and methyl orange may be removed within 10 min and 30 min, respectively. Additionally, 60% of antibiotic residue of tetracycline hydrochloride is degraded in 30 min which is 7 times more than that on commercial titania (P25). The reactive species for the photodegradation are determined through capture experiments, and a reaction mechanism is proposed accordingly. This work provides a novel photocatalyst for the selective removal of diverse organic contaminants in ethanol and an alternative for the potential application of lead-free halide perovskites. (c) 2024 The Research Center for Eco-Environmental Sciences, Chinese Academy of

引用

页码：577 / 583

页数：7