MnFe2O4包封聚苯胺纳米复合材料高效去除水中六价铬

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-09-11 DOI:10.1016/j.mseb.2025.118741

Jayeshkumar Prajapati, Anjali Badola, Bibekananda Bhoi, Vimlesh Chandra

{"title":"MnFe2O4包封聚苯胺纳米复合材料高效去除水中六价铬","authors":"Jayeshkumar Prajapati, Anjali Badola, Bibekananda Bhoi, Vimlesh Chandra","doi":"10.1016/j.mseb.2025.118741","DOIUrl":null,"url":null,"abstract":"<div><div>Hexavalent chromium Cr(VI) removal from industrial-contaminated streams and natural water supplies is becoming increasingly important across the globe due to its toxic and carcinogenic nature. In this study, MnFe2O4 encapsulated polyaniline nanocomposite (MnFe2O4@PANI) was synthesized through a chemical route to remove Cr(VI) from water via a batch adsorption process. The physical, chemical, and structural properties of MnFe2O4@PANI were analyzed using P-XRD, FTIR, XPS, FESEM, TEM, BET, TGA, and VSM. The results reveal the interaction between the functional groups of PANI and MnFe2O4, which aids in the hexavalent chromium adsorption. Different parameters such as MnFe2O4@PANI dosage (0.2–1.0 g L−1), contact time (20–120 min.), initial Cr(VI) concentration (40–100 mg L−1), temperature (298–328 K), pH (2–10), and salinity (0.02–0.10 M) were studied to investigate Cr (VI) adsorption process. Cr(VI) adsorption process on MnFe2O4@PANI was monolayer, spontaneous, and endothermic following pseudo-second-order kinetics and Langmuir isotherm model. The thermodynamic study showed the positive value of ΔH and negative ΔG value. The maximum adsorption capacity of Cr(VI) by MnFe2O4@PANI was 674.70 mg g−1 at 298 K, significantly higher than that of PANI (197.36 mg g−1). Furthermore, the MnFe2O4@PANI nanocomposite remained effective for up to five consecutive cycles without significant loss in performance. Electrostatic attraction, chemical reduction, and chelation played substantial roles in the Cr(VI) adsorption process. The above findings provide scientific support for MnFe2O4@PANI nanocomposite as a cost-effective and environmentally friendly material for the adsorption of Cr(VI) from wastewater.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118741"},"PeriodicalIF":4.6000,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Efficient removal of hexavalent chromium from water using MnFe2O4 encapsulated polyaniline nanocomposite\",\"authors\":\"Jayeshkumar Prajapati, Anjali Badola, Bibekananda Bhoi, Vimlesh Chandra\",\"doi\":\"10.1016/j.mseb.2025.118741\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Hexavalent chromium Cr(VI) removal from industrial-contaminated streams and natural water supplies is becoming increasingly important across the globe due to its toxic and carcinogenic nature. In this study, MnFe2O4 encapsulated polyaniline nanocomposite (MnFe2O4@PANI) was synthesized through a chemical route to remove Cr(VI) from water via a batch adsorption process. The physical, chemical, and structural properties of MnFe2O4@PANI were analyzed using P-XRD, FTIR, XPS, FESEM, TEM, BET, TGA, and VSM. The results reveal the interaction between the functional groups of PANI and MnFe2O4, which aids in the hexavalent chromium adsorption. Different parameters such as MnFe2O4@PANI dosage (0.2–1.0 g L−1), contact time (20–120 min.), initial Cr(VI) concentration (40–100 mg L−1), temperature (298–328 K), pH (2–10), and salinity (0.02–0.10 M) were studied to investigate Cr (VI) adsorption process. Cr(VI) adsorption process on MnFe2O4@PANI was monolayer, spontaneous, and endothermic following pseudo-second-order kinetics and Langmuir isotherm model. The thermodynamic study showed the positive value of ΔH and negative ΔG value. The maximum adsorption capacity of Cr(VI) by MnFe2O4@PANI was 674.70 mg g−1 at 298 K, significantly higher than that of PANI (197.36 mg g−1). Furthermore, the MnFe2O4@PANI nanocomposite remained effective for up to five consecutive cycles without significant loss in performance. Electrostatic attraction, chemical reduction, and chelation played substantial roles in the Cr(VI) adsorption process. The above findings provide scientific support for MnFe2O4@PANI nanocomposite as a cost-effective and environmentally friendly material for the adsorption of Cr(VI) from wastewater.</div></div>\",\"PeriodicalId\":18233,\"journal\":{\"name\":\"Materials Science and Engineering: B\",\"volume\":\"323 \",\"pages\":\"Article 118741\"},\"PeriodicalIF\":4.6000,\"publicationDate\":\"2025-09-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Science and Engineering: B\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0921510725007652\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Science and Engineering: B","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921510725007652","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

摘要

由于六价铬的毒性和致癌性，从工业污染的溪流和自然水源中去除六价铬在全球变得越来越重要。本研究通过化学途径合成了MnFe2O4包封聚苯胺纳米复合材料（MnFe2O4@PANI），通过间歇吸附法去除水中的Cr（VI）。采用P-XRD、FTIR、XPS、FESEM、TEM、BET、TGA和VSM等分析了MnFe2O4@PANI的物理、化学和结构性质。结果表明，聚苯胺与MnFe2O4的官能团之间存在相互作用，有利于六价铬的吸附。研究了MnFe2O4@PANI用量（0.2 ~ 1.0 g L−1）、接触时间（20 ~ 120 min）、初始Cr（VI）浓度（40 ~ 100 mg L−1）、温度（298 ~ 328 K）、pH（2 ~ 10）、盐度（0.02 ~ 0.10 M）等参数对Cr（VI）吸附过程的影响。Cr（VI）在MnFe2O4@PANI上的吸附过程遵循拟二级动力学和Langmuir等温模型，为单层自发吸热吸附过程。热力学研究表明ΔH为正值，ΔG为负值。在298 K下MnFe2O4@PANI对Cr（VI）的最大吸附量为674.70 mg g−1，显著高于PANI的197.36 mg g−1。此外，MnFe2O4@PANI纳米复合材料在连续5次循环中仍然有效，而不会显著降低性能。静电吸引、化学还原和螯合作用在Cr（VI）吸附过程中起重要作用。上述研究结果为MnFe2O4@PANI纳米复合材料作为一种经济环保的吸附废水中Cr（VI）的材料提供了科学支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Efficient removal of hexavalent chromium from water using MnFe2O4 encapsulated polyaniline nanocomposite

Hexavalent chromium Cr(VI) removal from industrial-contaminated streams and natural water supplies is becoming increasingly important across the globe due to its toxic and carcinogenic nature. In this study, MnFe₂O₄ encapsulated polyaniline nanocomposite (MnFe₂O₄@PANI) was synthesized through a chemical route to remove Cr(VI) from water via a batch adsorption process. The physical, chemical, and structural properties of MnFe₂O₄@PANI were analyzed using P-XRD, FTIR, XPS, FESEM, TEM, BET, TGA, and VSM. The results reveal the interaction between the functional groups of PANI and MnFe₂O₄, which aids in the hexavalent chromium adsorption. Different parameters such as MnFe₂O₄@PANI dosage (0.2–1.0 g L⁻¹), contact time (20–120 min.), initial Cr(VI) concentration (40–100 mg L⁻¹), temperature (298–328 K), pH (2–10), and salinity (0.02–0.10 M) were studied to investigate Cr (VI) adsorption process. Cr(VI) adsorption process on MnFe₂O₄@PANI was monolayer, spontaneous, and endothermic following pseudo-second-order kinetics and Langmuir isotherm model. The thermodynamic study showed the positive value of ΔH and negative ΔG value. The maximum adsorption capacity of Cr(VI) by MnFe₂O₄@PANI was 674.70 mg g⁻¹ at 298 K, significantly higher than that of PANI (197.36 mg g⁻¹). Furthermore, the MnFe₂O₄@PANI nanocomposite remained effective for up to five consecutive cycles without significant loss in performance. Electrostatic attraction, chemical reduction, and chelation played substantial roles in the Cr(VI) adsorption process. The above findings provide scientific support for MnFe₂O₄@PANI nanocomposite as a cost-effective and environmentally friendly material for the adsorption of Cr(VI) from wastewater.

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

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.