{"title":"Study on the adsorption and photodegradation of ciprofloxacin using mesoporous Nd2O3/maleic hydrazide doped gC3N4 nanocomposite","authors":"","doi":"10.1016/j.diamond.2024.111586","DOIUrl":null,"url":null,"abstract":"<div><p>A sonication method was used to synthesize Nd<sub>2</sub>O<sub>3</sub> bedecked maleic hydrazide-doped gC<sub>3</sub>N<sub>4</sub> (Nd<sub>2</sub>O<sub>3</sub>/MH-gC<sub>3</sub>N<sub>4</sub>) nanocomposite. The physicochemical properties of the nanocomposites were studied utilizing various analytical instruments, such as XRD, FTIR, HRSEM, HRTEM, EDAX, UV-DRS, XPS, BET, EIS, and Mott-Schottky analysis. Nd<sub>2</sub>O<sub>3</sub>/MH-gC<sub>3</sub>N<sub>4</sub> nanocomposite enhanced the photocatalytic degradation of Ciprofloxacin (CIP) in aqueous solution through efficient adsorption. The degradation efficiency was improvised by optimizing various conditions which included the initial concentration of CIP solution, catalyst dosage, different photocatalysts, pH, anions, and scavenger studies. The Nd<sub>2</sub>O<sub>3</sub>/MH-gC<sub>3</sub>N<sub>4</sub> nanocomposite degraded the organic pollutant to the level of 97.18 % within 120 min, with a rate constant of 0.02974 min<sup>−1</sup>. Scavenger analysis revealed the active involvement of reactive species during the photodegradation process. The photostability of the material was confirmed by a recyclability test. This study proposed a <em>Z</em>-scheme photocatalytic degradation mechanism and LC-MS analysis was used to identify the intermediate products. Furthermore, because of the high surface area (808.738 m<sup>2</sup>/g) and robust electrostatic interactions between the catalysts and CIP molecules, Nd<sub>2</sub>O<sub>3</sub>/MH-gC<sub>3</sub>N<sub>4</sub> nanocomposite demonstrated higher adsorption and photocatalytic ability for the removal of CIP from aqueous solution. A real lake water sample analysis was also performed using a Ciplox-500 drug which confirmed the practical application of the synthesized photocatalyst.</p></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":null,"pages":null},"PeriodicalIF":4.3000,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Diamond and Related Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925963524007994","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}
引用次数: 0
Abstract
A sonication method was used to synthesize Nd2O3 bedecked maleic hydrazide-doped gC3N4 (Nd2O3/MH-gC3N4) nanocomposite. The physicochemical properties of the nanocomposites were studied utilizing various analytical instruments, such as XRD, FTIR, HRSEM, HRTEM, EDAX, UV-DRS, XPS, BET, EIS, and Mott-Schottky analysis. Nd2O3/MH-gC3N4 nanocomposite enhanced the photocatalytic degradation of Ciprofloxacin (CIP) in aqueous solution through efficient adsorption. The degradation efficiency was improvised by optimizing various conditions which included the initial concentration of CIP solution, catalyst dosage, different photocatalysts, pH, anions, and scavenger studies. The Nd2O3/MH-gC3N4 nanocomposite degraded the organic pollutant to the level of 97.18 % within 120 min, with a rate constant of 0.02974 min−1. Scavenger analysis revealed the active involvement of reactive species during the photodegradation process. The photostability of the material was confirmed by a recyclability test. This study proposed a Z-scheme photocatalytic degradation mechanism and LC-MS analysis was used to identify the intermediate products. Furthermore, because of the high surface area (808.738 m2/g) and robust electrostatic interactions between the catalysts and CIP molecules, Nd2O3/MH-gC3N4 nanocomposite demonstrated higher adsorption and photocatalytic ability for the removal of CIP from aqueous solution. A real lake water sample analysis was also performed using a Ciplox-500 drug which confirmed the practical application of the synthesized photocatalyst.
期刊介绍：
DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices.
The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.
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