Effectiveness and Mechanisms of CdS/Porous g-C<sub>3</sub>N<sub>4</sub> Heterostructures for Adsorption and Photocatalytic Degradation of Tetracycline Hydrochloride Wastewater in Visible Light
In this study, CdS/porous g-C<sub>3</sub>N<sub>4</sub> heterostructures were successfully synthesized via in situ co-precipitation to efficiently degrade tetracycline hydrochloride (TCH) under visible light. The heterostructures, particularly at a 2:1 mass ratio of CdS to por...
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2024-12-01
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| author | Ran Yan Yuqing Mao Meirong Zhu Chuandong Wu Wei Zuo Weichen Zhu Chenxin Zhao Yu Tian Jun Zhang Jie Qiu |
| author_facet | Ran Yan Yuqing Mao Meirong Zhu Chuandong Wu Wei Zuo Weichen Zhu Chenxin Zhao Yu Tian Jun Zhang Jie Qiu |
| author_sort | Ran Yan |
| collection | DOAJ |
| description | In this study, CdS/porous g-C<sub>3</sub>N<sub>4</sub> heterostructures were successfully synthesized via in situ co-precipitation to efficiently degrade tetracycline hydrochloride (TCH) under visible light. The heterostructures, particularly at a 2:1 mass ratio of CdS to porous g-C<sub>3</sub>N<sub>4</sub>, demonstrated significant improvements in both adsorption and photocatalytic performance. The adsorption and degradation rates increased 4-fold and 9.64-fold, respectively, compared to pure porous g-C<sub>3</sub>N<sub>4</sub>, with optimal removal rates achieved at a catalyst dosage of 0.2 g/L. Detailed mechanistic studies revealed that photogenerated holes (h<sup>+</sup>) and superoxide radicals (·O<sub>2</sub><sup>−</sup>) were the primary active species driving the degradation process, while hydroxyl radicals (·OH) played a minimal role. The composite material also maintained over 70% degradation efficiency after five cycles, indicating excellent stability. This research presents a promising route for the photocatalytic treatment of wastewater containing persistent organic pollutants, offering practical insights into dosage optimization, reaction kinetics, and mechanistic pathways that enhance performance. |
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| id | doaj-art-9caae2f0162b4bdea3b99bd0b6820fbf |
| institution | OA Journals |
| issn | 2076-3417 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj-art-9caae2f0162b4bdea3b99bd0b6820fbf2025-08-20T02:38:38ZengMDPI AGApplied Sciences2076-34172024-12-0114231137210.3390/app142311372Effectiveness and Mechanisms of CdS/Porous g-C<sub>3</sub>N<sub>4</sub> Heterostructures for Adsorption and Photocatalytic Degradation of Tetracycline Hydrochloride Wastewater in Visible LightRan Yan0Yuqing Mao1Meirong Zhu2Chuandong Wu3Wei Zuo4Weichen Zhu5Chenxin Zhao6Yu Tian7Jun Zhang8Jie Qiu9State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, ChinaState Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, ChinaState Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, ChinaHarbin Institute of Technology National Engineering Research Center of Urban Water Resources Co., Ltd., Harbin 150090, ChinaState Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, ChinaState Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, ChinaState Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, ChinaState Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, ChinaState Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, ChinaHarbin Institute of Technology National Engineering Research Center of Urban Water Resources Co., Ltd., Harbin 150090, ChinaIn this study, CdS/porous g-C<sub>3</sub>N<sub>4</sub> heterostructures were successfully synthesized via in situ co-precipitation to efficiently degrade tetracycline hydrochloride (TCH) under visible light. The heterostructures, particularly at a 2:1 mass ratio of CdS to porous g-C<sub>3</sub>N<sub>4</sub>, demonstrated significant improvements in both adsorption and photocatalytic performance. The adsorption and degradation rates increased 4-fold and 9.64-fold, respectively, compared to pure porous g-C<sub>3</sub>N<sub>4</sub>, with optimal removal rates achieved at a catalyst dosage of 0.2 g/L. Detailed mechanistic studies revealed that photogenerated holes (h<sup>+</sup>) and superoxide radicals (·O<sub>2</sub><sup>−</sup>) were the primary active species driving the degradation process, while hydroxyl radicals (·OH) played a minimal role. The composite material also maintained over 70% degradation efficiency after five cycles, indicating excellent stability. This research presents a promising route for the photocatalytic treatment of wastewater containing persistent organic pollutants, offering practical insights into dosage optimization, reaction kinetics, and mechanistic pathways that enhance performance.https://www.mdpi.com/2076-3417/14/23/11372CdSporous g-C<sub>3</sub>N<sub>4</sub>photocatalytictetracycline hydrochloridewastewater treatmentphotogenerated charge separation |
| spellingShingle | Ran Yan Yuqing Mao Meirong Zhu Chuandong Wu Wei Zuo Weichen Zhu Chenxin Zhao Yu Tian Jun Zhang Jie Qiu Effectiveness and Mechanisms of CdS/Porous g-C<sub>3</sub>N<sub>4</sub> Heterostructures for Adsorption and Photocatalytic Degradation of Tetracycline Hydrochloride Wastewater in Visible Light Applied Sciences CdS porous g-C<sub>3</sub>N<sub>4</sub> photocatalytic tetracycline hydrochloride wastewater treatment photogenerated charge separation |
| title | Effectiveness and Mechanisms of CdS/Porous g-C<sub>3</sub>N<sub>4</sub> Heterostructures for Adsorption and Photocatalytic Degradation of Tetracycline Hydrochloride Wastewater in Visible Light |
| title_full | Effectiveness and Mechanisms of CdS/Porous g-C<sub>3</sub>N<sub>4</sub> Heterostructures for Adsorption and Photocatalytic Degradation of Tetracycline Hydrochloride Wastewater in Visible Light |
| title_fullStr | Effectiveness and Mechanisms of CdS/Porous g-C<sub>3</sub>N<sub>4</sub> Heterostructures for Adsorption and Photocatalytic Degradation of Tetracycline Hydrochloride Wastewater in Visible Light |
| title_full_unstemmed | Effectiveness and Mechanisms of CdS/Porous g-C<sub>3</sub>N<sub>4</sub> Heterostructures for Adsorption and Photocatalytic Degradation of Tetracycline Hydrochloride Wastewater in Visible Light |
| title_short | Effectiveness and Mechanisms of CdS/Porous g-C<sub>3</sub>N<sub>4</sub> Heterostructures for Adsorption and Photocatalytic Degradation of Tetracycline Hydrochloride Wastewater in Visible Light |
| title_sort | effectiveness and mechanisms of cds porous g c sub 3 sub n sub 4 sub heterostructures for adsorption and photocatalytic degradation of tetracycline hydrochloride wastewater in visible light |
| topic | CdS porous g-C<sub>3</sub>N<sub>4</sub> photocatalytic tetracycline hydrochloride wastewater treatment photogenerated charge separation |
| url | https://www.mdpi.com/2076-3417/14/23/11372 |
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