Facile and fast synthesis of nitrogen-doped biocharsupported nanoscale ferrous sulfide composite for efficient removal of aqueous Cr(VI)

IF 4.3 3区工程技术 Q2 ENGINEERING, CHEMICAL

Frontiers of Chemical Science and Engineering Pub Date : 2025-05-07 DOI:10.1007/s11705-025-2558-x

Shuyu Sun, Jiayu Song, Yinuo Zhang, Yaqun Ni, Qudi Zhang, Huanxin Zhang, Yuanda Du, Qiang Kong, Jiwei Liu

{"title":"Facile and fast synthesis of nitrogen-doped biocharsupported nanoscale ferrous sulfide composite for efficient removal of aqueous Cr(VI)","authors":"Shuyu Sun, Jiayu Song, Yinuo Zhang, Yaqun Ni, Qudi Zhang, Huanxin Zhang, Yuanda Du, Qiang Kong, Jiwei Liu","doi":"10.1007/s11705-025-2558-x","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, a novel nitrogen-doped biochar-supported nanoscale ferrous sulfide composite (nFeS@NBC) was fabricated by pyrolyzing corn straw pretreated with Mohr’s salt through a one-step carbothermic reduction process, which was applied in the efficient disposal of hexavalent chromium (Cr(VI))-containing wastewater. The key effects of impregnation ratio and pyrolysis temperature on the properties and removal performance of nFeS@NBC for Cr(VI) were subsequently investigated. The properties of nFeS@NBC were characterized through a series of techniques. It indicated that FeS nanoparticles were successfully loaded and −NH<sub>2</sub> functional groups effectively formed on the biochar surface, which enhanced the removal performance of nFeS@NBC for Cr(VI) from wastewater. The removal performance of nFeS@NBC for Cr(VI) was systemically evaluated at different experimental conditions and in the presence of major co-existing ions. Adsorption kinetics was best suited to the pseudo-second-order model. Additionally, Langmuir isotherms model could well explain the adsorption experiment data for the removal of Cr(VI) by nFeS@NBC with the highest adsorption capacity of 373.85 mg·g<sup>−1</sup>. According to the thermodynamic study, nFeS@NBC dominated the adsorption of Cr(VI) through an endothermic and spontaneous process. The adsorption and reduction served as the main removal mechanisms of nFeS@NBC for aqueous Cr(VI). nFeS@NBC could be used repetitively for its regeneration. Thus, the above results showed that it was feasible and efficient to remove Cr(VI) by nFeS@NBC, providing a potential green material for environmental remediation.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 6","pages":""},"PeriodicalIF":4.3000,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Frontiers of Chemical Science and Engineering","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11705-025-2558-x","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

In this work, a novel nitrogen-doped biochar-supported nanoscale ferrous sulfide composite (nFeS@NBC) was fabricated by pyrolyzing corn straw pretreated with Mohr’s salt through a one-step carbothermic reduction process, which was applied in the efficient disposal of hexavalent chromium (Cr(VI))-containing wastewater. The key effects of impregnation ratio and pyrolysis temperature on the properties and removal performance of nFeS@NBC for Cr(VI) were subsequently investigated. The properties of nFeS@NBC were characterized through a series of techniques. It indicated that FeS nanoparticles were successfully loaded and −NH₂ functional groups effectively formed on the biochar surface, which enhanced the removal performance of nFeS@NBC for Cr(VI) from wastewater. The removal performance of nFeS@NBC for Cr(VI) was systemically evaluated at different experimental conditions and in the presence of major co-existing ions. Adsorption kinetics was best suited to the pseudo-second-order model. Additionally, Langmuir isotherms model could well explain the adsorption experiment data for the removal of Cr(VI) by nFeS@NBC with the highest adsorption capacity of 373.85 mg·g⁻¹. According to the thermodynamic study, nFeS@NBC dominated the adsorption of Cr(VI) through an endothermic and spontaneous process. The adsorption and reduction served as the main removal mechanisms of nFeS@NBC for aqueous Cr(VI). nFeS@NBC could be used repetitively for its regeneration. Thus, the above results showed that it was feasible and efficient to remove Cr(VI) by nFeS@NBC, providing a potential green material for environmental remediation.

查看原文本刊更多论文

氮掺杂生物炭负载纳米硫化亚铁复合材料的快速合成及高效去除水中Cr（VI）的研究

本研究通过一步碳热还原法对莫尔盐预处理的玉米秸秆进行热解，制备了一种新型氮掺杂生物炭负载的纳米硫化亚铁复合材料（nFeS@NBC），并将其应用于含六价铬（Cr(VI)）废水的高效处理。研究了浸渍比和热解温度对nFeS@NBC对Cr（VI）的性能和去除性能的关键影响。通过一系列技术表征了nFeS@NBC的性质。结果表明，生物炭表面有效地形成了−NH2官能团，并成功负载了FeS纳米颗粒，提高了nFeS@NBC对废水中Cr（VI）的去除性能。系统评价了nFeS@NBC在不同实验条件和主要共存离子存在下对Cr（VI）的去除性能。吸附动力学最符合准二阶模型。此外，Langmuir等温线模型可以很好地解释nFeS@NBC吸附Cr（VI）的实验数据，其最高吸附量为373.85 mg·g−1。热力学研究表明，nFeS@NBC对Cr（VI）的吸附以吸热自发过程为主。吸附和还原是nFeS@NBC对水中Cr（VI）的主要去除机制。nFeS@NBC可重复使用，使其再生。综上所述，通过nFeS@NBC去除Cr（VI）是可行且高效的，为环境修复提供了一种潜在的绿色材料。

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

Frontiers of Chemical Science and Engineering ENGINEERING, CHEMICAL-

CiteScore

7.60

自引率

6.70%

发文量

868

审稿时长

1 months

期刊介绍： Frontiers of Chemical Science and Engineering presents the latest developments in chemical science and engineering, emphasizing emerging and multidisciplinary fields and international trends in research and development. The journal promotes communication and exchange between scientists all over the world. The contents include original reviews, research papers and short communications. Coverage includes catalysis and reaction engineering, clean energy, functional material, nanotechnology and nanoscience, biomaterials and biotechnology, particle technology and multiphase processing, separation science and technology, sustainable technologies and green processing.