镁铝层状双氢氧化物(LDHs)与碳酸盐和硝酸盐阴离子吸附浅绿色染料

IF 3.4 4区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
S. F. Al-Furhud, R. M. K. Mohamed, I. Alsohaimi, M. M. Kamel, M. Y. El-sayed, H. M. Youssef, A. M. Aldawsari, H. M. A. Hassan
{"title":"镁铝层状双氢氧化物(LDHs)与碳酸盐和硝酸盐阴离子吸附浅绿色染料","authors":"S. F. Al-Furhud,&nbsp;R. M. K. Mohamed,&nbsp;I. Alsohaimi,&nbsp;M. M. Kamel,&nbsp;M. Y. El-sayed,&nbsp;H. M. Youssef,&nbsp;A. M. Aldawsari,&nbsp;H. M. A. Hassan","doi":"10.1007/s13762-025-06494-2","DOIUrl":null,"url":null,"abstract":"<div><p>Mg–Al LDHs intercalated with carbonate (CO₃<sup>2</sup>⁻) and nitrate (NO₃⁻) anions were synthesized using the coprecipitation technique. Both materials were utilized to uptake light green dye from aquatic systems through batch adsorption experiments. The fabricated LDHs were characterized using FTIR, XRD, surface area, and SEM. Several factors influencing the uptake process were systematically evaluated, including contact time, pH, dosage, and initial dye content at various temperatures (293, 303, and 313 K). The finding showed that the adsorption efficiency of Mg–Al LDH samples peaked at pH 5, with Mg–Al–NO₃ LDH (76.4%) outperforming Mg–Al–CO₃ LDH (62.5%) due to differences in surface charge and anion mobility. Adsorption equilibrium was reached within 30 min, with increased adsorbent dosage improving removal efficiency up to a threshold. The dye uptake performance was more remarkable for Mg–Al–NO₃ LDH (19.33 mg. g<sup>−1</sup>) than Mg–Al–CO₃ LDH (15.65 mg. g<sup>−1</sup>) at pH 5 and 293 K. Isotherm analysis identified Henry’s model for the initial adsorption stage and Temkin’s model for higher concentrations, confirming an endothermic process with ΔS &gt; 0. The pseudo-second-order model (<i>R</i><sup>2</sup> = 0.9999) ascribed adsorption kinetics, while the Weber-Morris model indicated surface and intraparticle diffusion contributions. Thermodynamic analysis confirmed that the process was predominantly physisorption, driven by hydrogen bonding interactions between dye molecules and the –OH groups on the LDH surface. The superior removal capacity of Mg–Al–NO₃ LDH was attributed to stronger hydrogen bonding, facilitated by the presence of nitrate anions, which enhanced the electrostatic-interactions between the adsorbent and the dye molecules.</p></div>","PeriodicalId":589,"journal":{"name":"International Journal of Environmental Science and Technology","volume":"22 14","pages":"14015 - 14032"},"PeriodicalIF":3.4000,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Adsorption of light green dye using Mg–Al-layered double hydroxides (LDHs) with carbonate and nitrate anions\",\"authors\":\"S. F. Al-Furhud,&nbsp;R. M. K. Mohamed,&nbsp;I. Alsohaimi,&nbsp;M. M. Kamel,&nbsp;M. Y. El-sayed,&nbsp;H. M. Youssef,&nbsp;A. M. Aldawsari,&nbsp;H. M. A. Hassan\",\"doi\":\"10.1007/s13762-025-06494-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Mg–Al LDHs intercalated with carbonate (CO₃<sup>2</sup>⁻) and nitrate (NO₃⁻) anions were synthesized using the coprecipitation technique. Both materials were utilized to uptake light green dye from aquatic systems through batch adsorption experiments. The fabricated LDHs were characterized using FTIR, XRD, surface area, and SEM. Several factors influencing the uptake process were systematically evaluated, including contact time, pH, dosage, and initial dye content at various temperatures (293, 303, and 313 K). The finding showed that the adsorption efficiency of Mg–Al LDH samples peaked at pH 5, with Mg–Al–NO₃ LDH (76.4%) outperforming Mg–Al–CO₃ LDH (62.5%) due to differences in surface charge and anion mobility. Adsorption equilibrium was reached within 30 min, with increased adsorbent dosage improving removal efficiency up to a threshold. The dye uptake performance was more remarkable for Mg–Al–NO₃ LDH (19.33 mg. g<sup>−1</sup>) than Mg–Al–CO₃ LDH (15.65 mg. g<sup>−1</sup>) at pH 5 and 293 K. Isotherm analysis identified Henry’s model for the initial adsorption stage and Temkin’s model for higher concentrations, confirming an endothermic process with ΔS &gt; 0. The pseudo-second-order model (<i>R</i><sup>2</sup> = 0.9999) ascribed adsorption kinetics, while the Weber-Morris model indicated surface and intraparticle diffusion contributions. Thermodynamic analysis confirmed that the process was predominantly physisorption, driven by hydrogen bonding interactions between dye molecules and the –OH groups on the LDH surface. The superior removal capacity of Mg–Al–NO₃ LDH was attributed to stronger hydrogen bonding, facilitated by the presence of nitrate anions, which enhanced the electrostatic-interactions between the adsorbent and the dye molecules.</p></div>\",\"PeriodicalId\":589,\"journal\":{\"name\":\"International Journal of Environmental Science and Technology\",\"volume\":\"22 14\",\"pages\":\"14015 - 14032\"},\"PeriodicalIF\":3.4000,\"publicationDate\":\"2025-05-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Environmental Science and Technology\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s13762-025-06494-2\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Environmental Science and Technology","FirstCategoryId":"93","ListUrlMain":"https://link.springer.com/article/10.1007/s13762-025-06494-2","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0

摘要

用共沉淀法合成了含有碳酸盐(CO₃2⁻)和硝酸(NO₃⁻)阴离子的Mg-Al - LDHs。通过批量吸附实验,利用这两种材料对水生系统中的浅绿色染料进行吸附。利用FTIR、XRD、比表面积和SEM对所制备的低密度光阱进行了表征。系统地评估了影响吸收过程的几个因素,包括接触时间、pH、剂量和不同温度(293、303和313 K)下的初始染料含量。研究结果表明,Mg-Al LDH样品的吸附效率在pH为5时达到峰值,由于表面电荷和阴离子迁移率的差异,Mg-Al - no₃LDH(76.4%)优于Mg-Al - co₃LDH(62.5%)。在30 min内达到吸附平衡,随着吸附剂用量的增加,去除效率达到一定阈值。在pH 5和293 K条件下,Mg-Al-NO₃LDH (19.33 mg. g - 1)比Mg-Al-CO₃LDH (15.65 mg. g - 1)对染料的吸附性能更显著。等温线分析确定了Henry的初始吸附阶段模型和Temkin的较高浓度模型,证实了吸热过程ΔS >; 0。伪二阶模型(R2 = 0.9999)归因于吸附动力学,而Weber-Morris模型表明了表面和颗粒内扩散的贡献。热力学分析证实了该过程主要是物理吸附,由染料分子与LDH表面-OH基团之间的氢键相互作用驱动。Mg-Al-NO₃LDH具有优异的脱除能力是由于硝酸阴离子的存在促进了更强的氢键,从而增强了吸附剂与染料分子之间的静电相互作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Adsorption of light green dye using Mg–Al-layered double hydroxides (LDHs) with carbonate and nitrate anions

Mg–Al LDHs intercalated with carbonate (CO₃2⁻) and nitrate (NO₃⁻) anions were synthesized using the coprecipitation technique. Both materials were utilized to uptake light green dye from aquatic systems through batch adsorption experiments. The fabricated LDHs were characterized using FTIR, XRD, surface area, and SEM. Several factors influencing the uptake process were systematically evaluated, including contact time, pH, dosage, and initial dye content at various temperatures (293, 303, and 313 K). The finding showed that the adsorption efficiency of Mg–Al LDH samples peaked at pH 5, with Mg–Al–NO₃ LDH (76.4%) outperforming Mg–Al–CO₃ LDH (62.5%) due to differences in surface charge and anion mobility. Adsorption equilibrium was reached within 30 min, with increased adsorbent dosage improving removal efficiency up to a threshold. The dye uptake performance was more remarkable for Mg–Al–NO₃ LDH (19.33 mg. g−1) than Mg–Al–CO₃ LDH (15.65 mg. g−1) at pH 5 and 293 K. Isotherm analysis identified Henry’s model for the initial adsorption stage and Temkin’s model for higher concentrations, confirming an endothermic process with ΔS > 0. The pseudo-second-order model (R2 = 0.9999) ascribed adsorption kinetics, while the Weber-Morris model indicated surface and intraparticle diffusion contributions. Thermodynamic analysis confirmed that the process was predominantly physisorption, driven by hydrogen bonding interactions between dye molecules and the –OH groups on the LDH surface. The superior removal capacity of Mg–Al–NO₃ LDH was attributed to stronger hydrogen bonding, facilitated by the presence of nitrate anions, which enhanced the electrostatic-interactions between the adsorbent and the dye molecules.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
CiteScore
5.60
自引率
6.50%
发文量
806
审稿时长
10.8 months
期刊介绍: International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management. A broad outline of the journal''s scope includes: peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made. The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信