Panax notoginseng powder -assisted preparation of carbon-quantum-dots/BiOCl with enriched oxygen vacancies and boosted photocatalytic performance

被引：32

作者：

Liao, Hongru ^{[1
]}

Ran, Yu ^{[1
]}

Zhong, Junbo ^{[1
]}

Li, Jianzhang ^{[1
]}

Li, Minjiao ^{[1
]}

Yang, Hao ^{[2
]}

机构：

[1] Sichuan Univ Sci & Engn, Coll Chem & Environm Engn, Zigong 643000, Peoples R China

[2] Sichuan Tianren Chem Engn Co Ltd, Chengdu 610031, Peoples R China

来源：

ENVIRONMENTAL RESEARCH | 2022年 / 215卷

关键词：

BiOCl; Carbon quantum dots; Separation of photoinduced carriers; Oxygen vacancies; Photocatalytic property; Panax notoginseng; BIOCL ULTRATHIN NANOSHEETS; ACTIVATION;

D O I：

10.1016/j.envres.2022.114366

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Low activity of photocatalysts is a serious bottleneck to the practical application of photocatalytic technology. In this paper, a series of BiOCl composite photocatalysts containing carbon quantum dots (CQDs) were successfully prepared by adding Panax notoginseng powder (PNP) to the solvothermal synthesis system of BiOCl as a tem-plate agent and a raw material for 0D CQDs. CQDs/BiOCl exhibit 2D flake structures and 3D flower-like mi-crospheres self-assembled from thin flakes, holding rich oxygen vacancies (OVs). After detailed characterization, it was found that the amount of OVs on BiOCl could be regulated according to the amount of PNP added. The CQDs/OVs-BiOCl photocatalysts exhibit higher photogenerated charge separation efficiency and photocatalytic activity than the bare BiOCl. When the mass ratio of PNP/BiOCl is 1.0%, the photocatalyst demonstrates the maximum degradation activity for rhodamine B (RhB) and perfluorooctanoic acid (PFOA). In view of the solid observations, a photocatalytic enhancement mechanism of CQDs/BiOCl was elucidated.

引用

页数：11

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