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2D/2D Bi2WO6/Protonated g-C3N4 step-scheme heterojunctions for enhancing the photodegradation of 17 beta-estradiol: promotional role of electrostatic interaction

文献类型：期刊论文

作者Qing, Yashi1,2; Li, Yanxiang1,2; Hu, Dan3; Guo, Zhiwei1; Yang, Yujie1,2; Geng, Lihong4; Li, Wangliang1,2
刊名NEW JOURNAL OF CHEMISTRY
出版日期2022-02-07
卷号46期号:6页码:2697-2709
ISSN号1144-0546
DOI10.1039/d1nj05334e
英文摘要17 beta-Estradiol (E2) is a type of endocrine-disrupting chemical (EDC) with the strongest estrogenic activity, which poses a huge threat to ecosystems and human health even at extremely low concentrations. In this work, a bismuth tungstate (Bi2WO6)/protonated graphite carbon nitride (pg-C3N4) 2D/2D step-scheme (S-scheme) heterojunction (BPG) with an intimate and stable interface was successfully constructed by a hydrothermal reaction for the photodegradation of E2 under visible light irradiation. The g-C3N4 surface changed from negative to positively charged after protonation treatment, and it could combine with negatively charged Bi2WO6 through strong electrostatic interactions to accelerate the electron transfer and photogenerated carrier separation. The B1PG1 heterojunction (mass ratio of Bi2WO6 and pg-C3N4 is 1 : 1) showed higher E2 removal efficiency than Bi2WO6, pg-C3N4 and Bi2WO6/g-C3N4, with a photodegradation rate constant about 13.0, 10.4 and 5.0 times higher, respectively. This could be attributed to the promoted photogenerated carrier separation because of the formation of the S-scheme heterojunction and its tight contact interface through the strong electrostatic attraction between negatively charged Bi2WO6 and positively charged pg-C3N4. Moreover, a strong electrostatic interaction existed between positive B1PG1 and anionic E2 at pH 6.3, which enhanced E2 adsorption, favoring photocatalysis. The possible photocatalytic degradation pathways of E2 were proposed according to the LC-MS/MS results, and it was preliminarily predicted that the activity of all the intermediates would also be lower than that of E2. This study provides new insight into the rational design and synthesis of highly active photocatalysts, which have great potential application in the treatment of wastewater containing EDCs.
WOS关键词PHOTOCATALYTIC DEGRADATION ; PERFORMANCE ; FABRICATION ; DYES ; NANOCOMPOSITE ; ADSORPTION ; NANOSHEETS ; OXIDATION ; OXIDE
资助项目National Natural Science Foundation of China[21978307] ; National Natural Science Foundation of China[22078347] ; National Natural Science Foundation of China[21961160745] ; Key Research and Development Program of Hebei Province, China[21373303D] ; Open Research Fund Program of Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry[CP-2020-YB4] ; Open Research Fund Program of Key Laboratory of Polymer Materials and Products of Universities in Fujian[KF-19010] ; Science and Technology Program of Guanshanhu[[2020]13] ; Program of Innovation Academy for Green Manufacture, CAS 332[IAGM2020C04]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000744573800001
出版者ROYAL SOC CHEMISTRY
资助机构National Natural Science Foundation of China ; Key Research and Development Program of Hebei Province, China ; Open Research Fund Program of Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry ; Open Research Fund Program of Key Laboratory of Polymer Materials and Products of Universities in Fujian ; Science and Technology Program of Guanshanhu ; Program of Innovation Academy for Green Manufacture, CAS 332
源URL[http://ir.ipe.ac.cn/handle/122111/51840]  
专题中国科学院过程工程研究所
通讯作者Li, Yanxiang; Li, Wangliang
作者单位1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Beijing Technol & Business Univ, Key Lab Cleaner Prod & Integrated Resource Utiliz, Beijing 100048, Peoples R China
4.Fujian Univ Technol, Key Lab Polymer Mat & Prod Univ Fujian, Fuzhou 350108, Fujian, Peoples R China
推荐引用方式
GB/T 7714		 Qing, Yashi,Li, Yanxiang,Hu, Dan,et al. 2D/2D Bi2WO6/Protonated g-C3N4 step-scheme heterojunctions for enhancing the photodegradation of 17 beta-estradiol: promotional role of electrostatic interaction[J]. NEW JOURNAL OF CHEMISTRY,2022,46(6):2697-2709.
APA Qing, Yashi.,Li, Yanxiang.,Hu, Dan.,Guo, Zhiwei.,Yang, Yujie.,...&Li, Wangliang.(2022).2D/2D Bi2WO6/Protonated g-C3N4 step-scheme heterojunctions for enhancing the photodegradation of 17 beta-estradiol: promotional role of electrostatic interaction.NEW JOURNAL OF CHEMISTRY,46(6),2697-2709.
MLA Qing, Yashi,et al."2D/2D Bi2WO6/Protonated g-C3N4 step-scheme heterojunctions for enhancing the photodegradation of 17 beta-estradiol: promotional role of electrostatic interaction".NEW JOURNAL OF CHEMISTRY 46.6(2022):2697-2709.

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来源：过程工程研究所

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