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具有增强光催化活性用于降解四环素的可见光驱动Ag/BiOCl纳米复合光催化剂。

Visible-light-driven Ag/BiOCl nanocomposite photocatalyst with enhanced photocatalytic activity for degradation of tetracycline.

作者信息

Jiang Enhui, Liu Xiaoteng, Che Huinan, Liu Chunbo, Dong Hongjun, Che Guangbo

机构信息

School of Chemistry and Chemical Engineering, Jiangsu University Zhenjiang 212013 P. R. China.

Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University Zhenjiang 212013 P. R. China.

出版信息

RSC Adv. 2018 Nov 5;8(65):37200-37207. doi: 10.1039/c8ra07482h. eCollection 2018 Nov 1.

DOI:10.1039/c8ra07482h
PMID:35557788
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9089448/
Abstract

In this study, a novel Ag/BiOCl photocatalyst has been synthesized by a facile photodeposition process. Its photocatalytic performance was evaluated from the degradation of tetracycline (TC) under visible light irradiation ( > 420 nm). The 1.0 wt% Ag/BiOCl photocatalyst could significantly enhance the degradation of TC compared with pure BiOCl, with the degradation level reaching 94.2% in 120 minutes. The enhancement of photocatalytic activity could be attributed to the synergetic effect of the photogenerated electrons (e) of BiOCl and the surface plasmon resonance (SPR) caused by Ag nanoparticles, which could improve the absorption capacity of visible light and facilitate the separation of photogenerated electron-hole pairs. In addition, electron spin resonance (ESR) analysis and trapping experiments demonstrated that the superoxide radicals (˙O), hydroxyl radicals (˙OH) and holes (h) played crucial roles in the photocatalytic process of TC degradation. The present work provides a promising approach for the development of highly efficient photocatalysts to address current environmental pollution, energy issues and other related areas.

摘要

在本研究中，通过简便的光沉积法合成了一种新型的Ag/BiOCl光催化剂。在可见光（>420 nm）照射下，通过四环素（TC）的降解来评估其光催化性能。与纯BiOCl相比，1.0 wt%的Ag/BiOCl光催化剂能显著提高TC的降解率，120分钟内降解率达到94.2%。光催化活性的提高可归因于BiOCl光生电子（e）与Ag纳米颗粒引起的表面等离子体共振（SPR）的协同效应，这可以提高可见光的吸收能力并促进光生电子-空穴对的分离。此外，电子自旋共振（ESR）分析和捕获实验表明，超氧自由基（˙O）、羟基自由基（˙OH）和空穴（h）在TC降解的光催化过程中起关键作用。目前的工作为开发高效光催化剂以解决当前环境污染、能源问题及其他相关领域提供了一种有前景的方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/b0d25af93e43/c8ra07482h-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/b6e25206fb82/c8ra07482h-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/6c8756b43e8e/c8ra07482h-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/582c6b918841/c8ra07482h-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/126c34ada244/c8ra07482h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/032331fa8eca/c8ra07482h-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/b7ef88f394b8/c8ra07482h-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/10f6983a4277/c8ra07482h-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/4a066dad4837/c8ra07482h-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/f1b6b1bd0121/c8ra07482h-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/b0d25af93e43/c8ra07482h-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/b6e25206fb82/c8ra07482h-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/6c8756b43e8e/c8ra07482h-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/582c6b918841/c8ra07482h-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/126c34ada244/c8ra07482h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/032331fa8eca/c8ra07482h-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/b7ef88f394b8/c8ra07482h-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/10f6983a4277/c8ra07482h-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/4a066dad4837/c8ra07482h-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/f1b6b1bd0121/c8ra07482h-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2a5/9089448/b0d25af93e43/c8ra07482h-f10.jpg

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本文引用的文献

[1]
Moderate Bacterial Etching Allows Scalable and Clean Delamination of g-CN with Enriched Unpaired Electrons for Highly Improved Photocatalytic Water Disinfection.

ACS Appl Mater Interfaces. 2018-4-10

[2]
Facile construction of novel direct solid-state Z-scheme AgI/BiOBr photocatalysts for highly effective removal of ciprofloxacin under visible light exposure: Mineralization efficiency and mechanisms.

J Colloid Interface Sci. 2018-3-17

[3]
Hierarchical architectures of bismuth molybdate nanosheets onto nickel titanate nanofibers: Facile synthesis and efficient photocatalytic removal of tetracycline hydrochloride.

J Colloid Interface Sci. 2018-3-13

[4]
Synthesis of hollow lantern-like Eu(III)-doped g-CN with enhanced visible light photocatalytic perfomance for organic degradation.

J Hazard Mater. 2018-5-5

[5]
The formation of visible light-driven Ag/AgO photocatalyst with excellent property of photocatalytic activity and photocorrosion inhibition.

J Colloid Interface Sci. 2018-1-31

[6]
Enhanced Photocatalytic Degradation of Tetracycline by AgI/BiVO Heterojunction under Visible-Light Irradiation: Mineralization Efficiency and Mechanism.

ACS Appl Mater Interfaces. 2016-11-29

[7]
Adsorptional photocatalytic mineralization of oxytetracycline and ampicillin antibiotics using Bi2O3/BiOCl supported on graphene sand composite and chitosan.

J Colloid Interface Sci. 2016-6-29

[8]
Giant Enhancement of Internal Electric Field Boosting Bulk Charge Separation for Photocatalysis.

Adv Mater. 2016-3-22

[9]
Novel Bi₁₂O₁₅Cl₆ Photocatalyst for the Degradation of Bisphenol A under Visible-Light Irradiation.

ACS Appl Mater Interfaces. 2016-3-2

[10]
Fabrication of a Ag/Bi3TaO7 Plasmonic Photocatalyst with Enhanced Photocatalytic Activity for Degradation of Tetracycline.

ACS Appl Mater Interfaces. 2015-8-12

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