Nguyen Hoai Nam, Nguyen Quoc Hung, Nguyen Thi Hong Anh, Nguyen Quoc Thang and Nguyen Thi Mai Tho
{"title":"构建 Cnts/calcined Zn-Co-LDHs hydrid 以增强光催化对氧氟沙星的分解作用:机理、降解途径和毒性评估†。","authors":"Nguyen Hoai Nam, Nguyen Quoc Hung, Nguyen Thi Hong Anh, Nguyen Quoc Thang and Nguyen Thi Mai Tho","doi":"10.1039/D4RA06153E","DOIUrl":null,"url":null,"abstract":"<p >This work successfully synthesized the Cnts/calcined Zn-Co-LDHs (<em>x</em>Cnts@ZnC) hybrid material using the Zn-Co-LDHs precursor. Using the co-precipitation method, we synthesized Zn-Co-LDHs onto Cnts ranging in mass from 0 to 80 mg. These were subsequently calcined at 550 °C to yield <em>x</em>Cnts@ZnC (<em>x</em> = 2, 4, 6, 8). Based on the results, ZnC is found on the surface of Cnts in two phases: ZnO and ZnCo<small><sub>2</sub></small>O<small><sub>4</sub></small>. The photocatalytic activity of <em>x</em>Cnts@ZnC is demonstrated by its capacity to degrade ofloxacin antibiotics (OFL) in the visible region; 6Cnts@ZnC (85.8%; <em>k</em> = 0.0099 min<small><sup>−1</sup></small>), shows the best decomposition rate constant, increasing by three times when compared to ZnC (53.3%; <em>k</em> = 0.0048 min<small><sup>−1</sup></small>). The h<small><sup>+</sup></small>, O<small><sub>2</sub></small>˙<small><sup>−</sup></small>, radicals are the main factors that determine of the decomposition process in the identified OFL decomposition mechanism of 6Cnts@ZnC, in which Cnts have the role of transporting and collecting electrons, minimizing the recombination between photogenerated electrons and holes. The OFL degradation pathways of 6Cnts@ZnC were also investigated and identified by the HPLC-MS spectrum and suggested the new degradation mechanism to small molecules that have nontoxic of small molecules to environment site by ADMET model. The OFL degradation obtained 96.44% and set equivalent of degradation after completing 300 min.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":null,"pages":null},"PeriodicalIF":3.9000,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ra/d4ra06153e?page=search","citationCount":"0","resultStr":"{\"title\":\"Construction of Cnts/calcined Zn-Co-LDHs hydrid to enhanced photocatalytic for ofloxacin decomposition: mechanism, degradation pathway, and toxicity assessment†\",\"authors\":\"Nguyen Hoai Nam, Nguyen Quoc Hung, Nguyen Thi Hong Anh, Nguyen Quoc Thang and Nguyen Thi Mai Tho\",\"doi\":\"10.1039/D4RA06153E\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >This work successfully synthesized the Cnts/calcined Zn-Co-LDHs (<em>x</em>Cnts@ZnC) hybrid material using the Zn-Co-LDHs precursor. Using the co-precipitation method, we synthesized Zn-Co-LDHs onto Cnts ranging in mass from 0 to 80 mg. These were subsequently calcined at 550 °C to yield <em>x</em>Cnts@ZnC (<em>x</em> = 2, 4, 6, 8). Based on the results, ZnC is found on the surface of Cnts in two phases: ZnO and ZnCo<small><sub>2</sub></small>O<small><sub>4</sub></small>. The photocatalytic activity of <em>x</em>Cnts@ZnC is demonstrated by its capacity to degrade ofloxacin antibiotics (OFL) in the visible region; 6Cnts@ZnC (85.8%; <em>k</em> = 0.0099 min<small><sup>−1</sup></small>), shows the best decomposition rate constant, increasing by three times when compared to ZnC (53.3%; <em>k</em> = 0.0048 min<small><sup>−1</sup></small>). The h<small><sup>+</sup></small>, O<small><sub>2</sub></small>˙<small><sup>−</sup></small>, radicals are the main factors that determine of the decomposition process in the identified OFL decomposition mechanism of 6Cnts@ZnC, in which Cnts have the role of transporting and collecting electrons, minimizing the recombination between photogenerated electrons and holes. The OFL degradation pathways of 6Cnts@ZnC were also investigated and identified by the HPLC-MS spectrum and suggested the new degradation mechanism to small molecules that have nontoxic of small molecules to environment site by ADMET model. The OFL degradation obtained 96.44% and set equivalent of degradation after completing 300 min.</p>\",\"PeriodicalId\":102,\"journal\":{\"name\":\"RSC Advances\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2024-10-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://pubs.rsc.org/en/content/articlepdf/2024/ra/d4ra06153e?page=search\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"RSC Advances\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2024/ra/d4ra06153e\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"RSC Advances","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/ra/d4ra06153e","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Construction of Cnts/calcined Zn-Co-LDHs hydrid to enhanced photocatalytic for ofloxacin decomposition: mechanism, degradation pathway, and toxicity assessment†
This work successfully synthesized the Cnts/calcined Zn-Co-LDHs (xCnts@ZnC) hybrid material using the Zn-Co-LDHs precursor. Using the co-precipitation method, we synthesized Zn-Co-LDHs onto Cnts ranging in mass from 0 to 80 mg. These were subsequently calcined at 550 °C to yield xCnts@ZnC (x = 2, 4, 6, 8). Based on the results, ZnC is found on the surface of Cnts in two phases: ZnO and ZnCo2O4. The photocatalytic activity of xCnts@ZnC is demonstrated by its capacity to degrade ofloxacin antibiotics (OFL) in the visible region; 6Cnts@ZnC (85.8%; k = 0.0099 min−1), shows the best decomposition rate constant, increasing by three times when compared to ZnC (53.3%; k = 0.0048 min−1). The h+, O2˙−, radicals are the main factors that determine of the decomposition process in the identified OFL decomposition mechanism of 6Cnts@ZnC, in which Cnts have the role of transporting and collecting electrons, minimizing the recombination between photogenerated electrons and holes. The OFL degradation pathways of 6Cnts@ZnC were also investigated and identified by the HPLC-MS spectrum and suggested the new degradation mechanism to small molecules that have nontoxic of small molecules to environment site by ADMET model. The OFL degradation obtained 96.44% and set equivalent of degradation after completing 300 min.
期刊介绍:
An international, peer-reviewed journal covering all of the chemical sciences, including multidisciplinary and emerging areas. RSC Advances is a gold open access journal allowing researchers free access to research articles, and offering an affordable open access publishing option for authors around the world.