☆ 4.7 Article

Bi@BiOx(OH)y modified oxidized g-C3N4 photocatalytic removal of tetracycline hydrochloride with highly effective oxygen activation

JOURNAL OF HAZARDOUS MATERIALS (2022)

期刊

JOURNAL OF HAZARDOUS MATERIALS

卷 427, 期 -, 页码 -

出版社

ELSEVIER

DOI: 10.1016/j.jhazmat.2021.127866

关键词

Bi@BiOx(OH)y; Oxidized g-C3N4; O-2 activation; Tetracycline hydrochloride; Photodegradation

类别

Engineering, Environmental Environmental Sciences

资金

National Natural Science Foundation of China [21872009, 52070015]

向作者/读者索取更多资源

Protocol

社区支持

Reagent

社区支持

智能总结 New
摘要

A novel Bi@BiOx(OH)y-modified oxidized g-C3N4 photocatalyst was successfully prepared via wet chemical reduction under alkaline conditions. The modified photocatalyst showed excellent light response capability, adsorption capacity, and high efficiency in removing tetracycline hydrochloride. These effects were attributed to the specific surface area, active sites, bandgap width, Bi-SPR effect, and BiOx(OH)y electron trap caused by the loaded Bi groups.

A novel Bi@BiOx(OH)y-modified oxidized g-C3N4 photocatalyst was successfully prepared via wet chemical reduction under alkaline conditions for the tetracycline hydrochloride removal. The prepared materials were characterized comprehensively and fully. Sufficient structural representation analyses confirmed the successful loading of Bi in the form of Bi@BiOx(OH)y complex beads. Based on basic photocatalytic studies, 10% (mass percentage) was found to be the best metal Bi loading. DRS, PL, transient photocurrent and EIS have explored the improvement of the photochemical properties of materials by loading Bi@BiOx(OH)y groups, particularly the improvement of photocatalytic properties by the SPR effect and electron traps. 10%Bi-OxCN exhibited the most suitable particle size of nonagglomerated Bi-metal groups, the largest specific surface area (43.53 m(2) g(-1)), the most adsorption sites and the most significant photocurrent (8.694 x 10(-2) mA cm(-2)) (7.78 times that of OxCN). This indicated that 10%Bi-OxCN had good adsorption capacity and excellent light response capability. In addition, 10%Bi-OxCN showed the best tetracycline hydrochloride removal efficiency (96.0%), with center dot O-2(-) as the main active substance and O-1(2) as the second most important substance made of center dot O-2(-) and h(+). The excellent photocatalytic effect and good reusability were fundamentally dependent on the modification of OxCN by Bi@BiOx(OH)y groups to produce a large number of active substances (including the separation efficiency of electron-hole pairs and the generation efficiency of center dot O-2(-) and O-1(2) ). These advantages are all related to the high specific surface area, a large number of active sites, narrow bandgap width, Bi-SPR effect, and BiOx(OH)y electron trap caused by successful loading of Bi groups.

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。

主要评分

4.7

评分不足

次要评分

新颖性

重要性

科学严谨性

评价这篇论文

Sonocatalytic degradation of tetracycline hydrochloride with CoFe2O4/g-C3N4 composite

Jingjing Zhang, Yue Zhao, Kai Zhang, Amir Zada, Kezhen Qi

Summary: Different mass percent ratios of CoFe2O4 coupled g-C3N4 nanocomposites were prepared through a hydrothermal process for the sonocatalytic degradation of tetracycline hydrochloride in aqueous media. The best degradation efficiency of 26.71% in 10 minutes was achieved when the amount of CoFe2O4 was 25% in the nanocomposite. This enhanced efficiency was attributed to the accelerated charge transfer and separation through the heterojunctional interface. The results of this work provide an easy approach for fabricating highly efficient low-cost magnetic sonocatalysts for the eradication of hazardous materials in the environment.

ULTRASONICS SONOCHEMISTRY (2023)