Immobilization nitrogen-doped sodium alginate-derived carbon quantum dots on sodium alginate hydrogel for enhanced Pb(II) removal

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2024-09-04 DOI:10.1016/j.diamond.2024.111576

{"title":"Immobilization nitrogen-doped sodium alginate-derived carbon quantum dots on sodium alginate hydrogel for enhanced Pb(II) removal","authors":"","doi":"10.1016/j.diamond.2024.111576","DOIUrl":null,"url":null,"abstract":"<div><p>Heavy metal contamination, particularly from Pb(II), poses severe environmental and health risks due to its toxicity and persistence in ecosystems. This study presents an innovative and sustainable adsorbent composed of nitrogen doped carbon quantum dots (NCDs), derived from sodium alginate and immobilized on a sodium alginate hydrogel (HL-NCDs), for the efficient extraction of Pb(II) from water. The experimental results indicate that Pb<img>N and Pb<img>C interactions, particularly involving the N<img>H moieties within the carbon quantum dots, are the predominant mechanisms facilitating Pb(II) removal, as confirmed by density functional theory (DFT) calculations. These interactions are substantiated by thermodynamic analyses and charge distribution studies, which highlight the enhanced affinity of HL-NCDs towards Pb(II) ions. The novel HL-NCDs composite material not only demonstrates excellent Pb(II) adsorption efficiency but also suggests broad applicability in water treatment technologies, marking a significant advancement in the use of biomass-derived materials for environmental remediation.</p></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":null,"pages":null},"PeriodicalIF":4.3000,"publicationDate":"2024-09-04","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/S0925963524007891","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

Heavy metal contamination, particularly from Pb(II), poses severe environmental and health risks due to its toxicity and persistence in ecosystems. This study presents an innovative and sustainable adsorbent composed of nitrogen doped carbon quantum dots (NCDs), derived from sodium alginate and immobilized on a sodium alginate hydrogel (HL-NCDs), for the efficient extraction of Pb(II) from water. The experimental results indicate that PbN and PbC interactions, particularly involving the NH moieties within the carbon quantum dots, are the predominant mechanisms facilitating Pb(II) removal, as confirmed by density functional theory (DFT) calculations. These interactions are substantiated by thermodynamic analyses and charge distribution studies, which highlight the enhanced affinity of HL-NCDs towards Pb(II) ions. The novel HL-NCDs composite material not only demonstrates excellent Pb(II) adsorption efficiency but also suggests broad applicability in water treatment technologies, marking a significant advancement in the use of biomass-derived materials for environmental remediation.

Abstract Image

查看原文本刊更多论文

在藻酸钠水凝胶上固定氮掺杂的藻酸钠衍生碳量子点以提高铅（II）的去除率

重金属污染，尤其是铅（II）污染，因其毒性和在生态系统中的持久性而对环境和健康构成严重威胁。本研究提出了一种由掺氮碳量子点（NCDs）组成的创新型可持续吸附剂，该吸附剂源自海藻酸钠，并固定在海藻酸钠水凝胶（HL-NCDs）上，用于从水中高效萃取铅（II）。实验结果表明，PbN 和 PbC 相互作用，特别是碳量子点内 NH 分子的参与，是促进铅（II）去除的主要机制，这一点已得到密度泛函理论（DFT）计算的证实。热力学分析和电荷分布研究证实了这些相互作用，突出表明 HL-NCDs 对铅（II）离子的亲和力增强。新型 HL-NCDs 复合材料不仅具有出色的铅（II）吸附效率，而且在水处理技术中具有广泛的适用性，标志着生物质衍生材料在环境修复领域的应用取得了重大进展。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

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.