Photocatalytic degradation of tetracycline hydrochloride with g-C3N4/Ag/AgBr composites
Graphite carbon nitride (g-C3N4), as a polymer semiconductor photocatalyst, is widely used in the treatment of photocatalytic environmental pollution. In this work, a Z-scheme g-C3N4/Ag/AgBr heterojunction photocatalyst was prepared based on the preparation of a g-C3N4-based heterojunction via in-si...
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| Format: | Article |
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Frontiers Media S.A.
2022-11-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2022.1069816/full |
| _version_ | 1797988670388568064 |
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| author | Jiahe Song Kun Zhao Xiangbin Yin Ying Liu Iltaf Khan Shu-Yuan Liu |
| author_facet | Jiahe Song Kun Zhao Xiangbin Yin Ying Liu Iltaf Khan Shu-Yuan Liu |
| author_sort | Jiahe Song |
| collection | DOAJ |
| description | Graphite carbon nitride (g-C3N4), as a polymer semiconductor photocatalyst, is widely used in the treatment of photocatalytic environmental pollution. In this work, a Z-scheme g-C3N4/Ag/AgBr heterojunction photocatalyst was prepared based on the preparation of a g-C3N4-based heterojunction via in-situ loading through photoreduction method. The g-C3N4/Ag/AgBr composite showed an excellent photocatalytic performance in the degradation of tetracycline hydrochloride pollutants. Among the prepared samples, g-C3N4/Ag/AgBr-8% showed the best photocatalytic ability for the degradation of tetracycline hydrochloride, whose photocatalytic degradation kinetic constant was 0.02764 min−1, which was 9.8 times that of g-C3N4, 2.4 times that of AgBr, and 1.9 times that of Ag/AgBr. In the photocatalytic process, •O2– and •OH are main active oxygen species involved in the degradation of organic pollutants. The photocatalytic mechanism of g-C3N4/Ag/AgBr is mainly through the formation of Z-scheme heterojunctions, which not only effectively improves the separation efficiency of photogenerated electron-hole pairs, but also maintains the oxidation and reduction capability of AgBr and g-C3N4, respectively. |
| first_indexed | 2024-04-11T08:06:42Z |
| format | Article |
| id | doaj.art-3844b0bf06464965a15605fe62fcbac9 |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-04-11T08:06:42Z |
| publishDate | 2022-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-3844b0bf06464965a15605fe62fcbac92022-12-22T04:35:29ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462022-11-011010.3389/fchem.2022.10698161069816Photocatalytic degradation of tetracycline hydrochloride with g-C3N4/Ag/AgBr compositesJiahe Song0Kun Zhao1Xiangbin Yin2Ying Liu3Iltaf Khan4Shu-Yuan Liu5Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, ChinaInstitute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, ChinaInstitute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, ChinaInstitute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, ChinaSchool of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, ChinaDepartment of Pharmacology, Shenyang Medical College, Shenyang, ChinaGraphite carbon nitride (g-C3N4), as a polymer semiconductor photocatalyst, is widely used in the treatment of photocatalytic environmental pollution. In this work, a Z-scheme g-C3N4/Ag/AgBr heterojunction photocatalyst was prepared based on the preparation of a g-C3N4-based heterojunction via in-situ loading through photoreduction method. The g-C3N4/Ag/AgBr composite showed an excellent photocatalytic performance in the degradation of tetracycline hydrochloride pollutants. Among the prepared samples, g-C3N4/Ag/AgBr-8% showed the best photocatalytic ability for the degradation of tetracycline hydrochloride, whose photocatalytic degradation kinetic constant was 0.02764 min−1, which was 9.8 times that of g-C3N4, 2.4 times that of AgBr, and 1.9 times that of Ag/AgBr. In the photocatalytic process, •O2– and •OH are main active oxygen species involved in the degradation of organic pollutants. The photocatalytic mechanism of g-C3N4/Ag/AgBr is mainly through the formation of Z-scheme heterojunctions, which not only effectively improves the separation efficiency of photogenerated electron-hole pairs, but also maintains the oxidation and reduction capability of AgBr and g-C3N4, respectively.https://www.frontiersin.org/articles/10.3389/fchem.2022.1069816/fullG-C3N4Ag/AgBrZ-scheme heterojunctionphotocatalytic degradationtetracycline hydrochloride |
| spellingShingle | Jiahe Song Kun Zhao Xiangbin Yin Ying Liu Iltaf Khan Shu-Yuan Liu Photocatalytic degradation of tetracycline hydrochloride with g-C3N4/Ag/AgBr composites Frontiers in Chemistry G-C3N4 Ag/AgBr Z-scheme heterojunction photocatalytic degradation tetracycline hydrochloride |
| title | Photocatalytic degradation of tetracycline hydrochloride with g-C3N4/Ag/AgBr composites |
| title_full | Photocatalytic degradation of tetracycline hydrochloride with g-C3N4/Ag/AgBr composites |
| title_fullStr | Photocatalytic degradation of tetracycline hydrochloride with g-C3N4/Ag/AgBr composites |
| title_full_unstemmed | Photocatalytic degradation of tetracycline hydrochloride with g-C3N4/Ag/AgBr composites |
| title_short | Photocatalytic degradation of tetracycline hydrochloride with g-C3N4/Ag/AgBr composites |
| title_sort | photocatalytic degradation of tetracycline hydrochloride with g c3n4 ag agbr composites |
| topic | G-C3N4 Ag/AgBr Z-scheme heterojunction photocatalytic degradation tetracycline hydrochloride |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2022.1069816/full |
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