{"title":"Construction of ZnS QDs decorated gC3N4 nanosheets for enhanced catalytic degradation of Rhodamine B","authors":"","doi":"10.1016/j.ceramint.2024.07.033","DOIUrl":null,"url":null,"abstract":"<div><p><span>The significant environmental impact of textile industries<span>, particularly dye pollution from the textile effluents necessitates the urgent attention for its removal. Rhodamine<span> B (RhB), known for its resistance to degradation which poses a considerable challenge. In this study, mesoporous gC</span></span></span><sub>3</sub>N<sub>4</sub><span><span>–ZnS QDs<span> NCs were synthesized using an ultrasound-assisted co-precipitation method. Comprehensive characterizations, including scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy<span> (XPS), diffuse reflectance spectroscopy, </span></span></span>photoluminescence<span> spectroscopy, electrochemical impedance spectroscopy, and Brunauer-Emmett-Teller analysis were conducted to evaluate the materials. SEM images revealed a layered structure in the gC</span></span><sub>3</sub>N<sub>4</sub><span> nanosheet<span>, with small crystals clustered together, influencing the electronic and optical properties. The surface of gC</span></span><sub>3</sub>N<sub>4</sub><span><span> was decorated with ZnS </span>QDs<span> to enhance the catalytic degradation of RhB. TEM<span><span> analysis confirmed the uniform distribution of ZnS </span>QDs over gC</span></span></span><sub>3</sub>N<sub>4</sub><span><span> nanosheet. XRD and XPS analysis results before and after catalysis demonstrated the </span>structural stability of the material. The degradation efficiency was achieved to be 97.8 % at a rate constant of 0.077 min</span><sup>−1</sup><span> within 54 min. The stability and reusability of the NCs were confirmed through six consecutive cycles of catalytic degradation. The present study presents a promising strategy for the degradation of organic pollutants<span> in aquatic ecosystems, offering insights for sustainable mitigation of textile dye pollution and paves a ways for manufacturing innovation.</span></span></p></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":null,"pages":null},"PeriodicalIF":5.1000,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ceramics International","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0272884224029080","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
The significant environmental impact of textile industries, particularly dye pollution from the textile effluents necessitates the urgent attention for its removal. Rhodamine B (RhB), known for its resistance to degradation which poses a considerable challenge. In this study, mesoporous gC3N4–ZnS QDs NCs were synthesized using an ultrasound-assisted co-precipitation method. Comprehensive characterizations, including scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), diffuse reflectance spectroscopy, photoluminescence spectroscopy, electrochemical impedance spectroscopy, and Brunauer-Emmett-Teller analysis were conducted to evaluate the materials. SEM images revealed a layered structure in the gC3N4 nanosheet, with small crystals clustered together, influencing the electronic and optical properties. The surface of gC3N4 was decorated with ZnS QDs to enhance the catalytic degradation of RhB. TEM analysis confirmed the uniform distribution of ZnS QDs over gC3N4 nanosheet. XRD and XPS analysis results before and after catalysis demonstrated the structural stability of the material. The degradation efficiency was achieved to be 97.8 % at a rate constant of 0.077 min−1 within 54 min. The stability and reusability of the NCs were confirmed through six consecutive cycles of catalytic degradation. The present study presents a promising strategy for the degradation of organic pollutants in aquatic ecosystems, offering insights for sustainable mitigation of textile dye pollution and paves a ways for manufacturing innovation.
期刊介绍:
Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties.
Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour.
Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.