{"title":"Ag@CuS/CC电极促进DBD系统中抗生素的去除:机理分析与实际应用","authors":"","doi":"10.1016/j.seppur.2024.129786","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, rice-granular CuS nanoparticles are grown in situ on carbon cloth (CC) using a hydrothermal method and Ag is then loaded on the CuS/CC via ultrasonic-assisted reduction. The electrodes combined with a dielectric barrier discharge (DBD) system can improve the plasma discharge efficiency and have good oxidation properties for tetracycline, amoxicillin and sulfamethoxazole. The removal rate is further improved after adding Cr(VI). The active substances, H<sub>2</sub>O<sub>2</sub> and O<sub>3</sub>, are consumed during the process of antibiotic degradation. Trapping agent experiments indicate that h<sup>+</sup>, ∙OH and O<sub>2</sub>∙<sup>−</sup> play a crucial oxidation role in the reaction, with O<sub>2</sub>∙<sup>−</sup> being identified as the primary active substance. The pollutant degradation can be further accelerated by capturing e<sup>−</sup> and ·H for the reduction of Cr(VI). By calculating the adsorption energies of H<sub>2</sub>O and O<sub>2</sub> on the surface of Ag@CuS, it is also concluded that O<sub>2</sub> is easily adsorbed and preferentially generates O<sub>2</sub>∙<sup>−</sup>. The residual intermediates in the samples after the degradation of tetracycline, amoxicillin and sulfamethoxazole are determined and their degradation pathways also explored. The Ag@CuS/CC-DBD system has application potential in actual wastewater treatment as it can not only reduce the chemical oxygen demand but also improve the biodegradability of wastewater.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ag@CuS/CC electrode promoting antibiotics removal in DBD system: Mechanism analysis and practical application\",\"authors\":\"\",\"doi\":\"10.1016/j.seppur.2024.129786\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>In this study, rice-granular CuS nanoparticles are grown in situ on carbon cloth (CC) using a hydrothermal method and Ag is then loaded on the CuS/CC via ultrasonic-assisted reduction. The electrodes combined with a dielectric barrier discharge (DBD) system can improve the plasma discharge efficiency and have good oxidation properties for tetracycline, amoxicillin and sulfamethoxazole. The removal rate is further improved after adding Cr(VI). The active substances, H<sub>2</sub>O<sub>2</sub> and O<sub>3</sub>, are consumed during the process of antibiotic degradation. Trapping agent experiments indicate that h<sup>+</sup>, ∙OH and O<sub>2</sub>∙<sup>−</sup> play a crucial oxidation role in the reaction, with O<sub>2</sub>∙<sup>−</sup> being identified as the primary active substance. The pollutant degradation can be further accelerated by capturing e<sup>−</sup> and ·H for the reduction of Cr(VI). By calculating the adsorption energies of H<sub>2</sub>O and O<sub>2</sub> on the surface of Ag@CuS, it is also concluded that O<sub>2</sub> is easily adsorbed and preferentially generates O<sub>2</sub>∙<sup>−</sup>. The residual intermediates in the samples after the degradation of tetracycline, amoxicillin and sulfamethoxazole are determined and their degradation pathways also explored. The Ag@CuS/CC-DBD system has application potential in actual wastewater treatment as it can not only reduce the chemical oxygen demand but also improve the biodegradability of wastewater.</div></div>\",\"PeriodicalId\":427,\"journal\":{\"name\":\"Separation and Purification Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.1000,\"publicationDate\":\"2024-09-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Separation and Purification Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1383586624035251\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1383586624035251","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Ag@CuS/CC electrode promoting antibiotics removal in DBD system: Mechanism analysis and practical application
In this study, rice-granular CuS nanoparticles are grown in situ on carbon cloth (CC) using a hydrothermal method and Ag is then loaded on the CuS/CC via ultrasonic-assisted reduction. The electrodes combined with a dielectric barrier discharge (DBD) system can improve the plasma discharge efficiency and have good oxidation properties for tetracycline, amoxicillin and sulfamethoxazole. The removal rate is further improved after adding Cr(VI). The active substances, H2O2 and O3, are consumed during the process of antibiotic degradation. Trapping agent experiments indicate that h+, ∙OH and O2∙− play a crucial oxidation role in the reaction, with O2∙− being identified as the primary active substance. The pollutant degradation can be further accelerated by capturing e− and ·H for the reduction of Cr(VI). By calculating the adsorption energies of H2O and O2 on the surface of Ag@CuS, it is also concluded that O2 is easily adsorbed and preferentially generates O2∙−. The residual intermediates in the samples after the degradation of tetracycline, amoxicillin and sulfamethoxazole are determined and their degradation pathways also explored. The Ag@CuS/CC-DBD system has application potential in actual wastewater treatment as it can not only reduce the chemical oxygen demand but also improve the biodegradability of wastewater.
期刊介绍:
Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.