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Cr (VI) typically exists as a negatively charged anion, whereas Cr (III) is positively charged as a cation. The positively charged Cr (III) obtained through the reduction of Cr (VI) can further adsorb Cr (VI), thereby enabling cyclic adsorption and enrichment of chromium species. In this study, polypyrrole (PPy) was dispersed in chitosan/polyethyleneimine (CS/PEI) hydrogel network to prepare a composite aerogel named CS/PPy/PEI. The composition and structure of CS/PPy/PEI were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), Zeta potential and UV-vis-NIR spectroscopy. Based on the valence transformation of Cr (VI)/Cr (III), the cyclic enrichment process of Cr (VI) adsorption-photoreduction-immobilization-re-adsorption is established in CS/PPy/PEI aerogel. The results showed that the introduction of ascorbic acid as a co-catalyst during the photocatalytic reduction process could further enhance the enrichment of chromium by CS/PPy/PEI, and the adsorption capacity of CS/PPy/PEI could reach 279.69mg/g after 6cycles of enrichment. Since CS/PPy/PEI aerogels do not contain any other metals, high-purity chromium can be effectively recovered through simple calcination.

, authors=Jian-yu XING1, 2, *, Yue-hao BAI1, Huan MA4, Ya-li LIU4, Rui JIA1, 3, authorsList=Jian-yu XING, Yue-hao BAI, Huan MA, Ya-li LIU, Rui JIA, authorCompany=null, correspAuthors=Jian-yu XING, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314917625398915116, articleId=1314917623188516905, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=CS/PPy/PEI气凝胶中Cr(VI)的吸附-还原-固化-再吸附循环富集研究, columnId=1234106386565624579, journalTitle=中国环境科学, columnName=水污染与控制, runingTitle=null, highlight=null, articleAbstract=

Cr(VI)通常以阴离子存在带负电荷,而Cr(III)以阳离子存在带正电荷,通过还原Cr(VI)得到带正电荷的Cr(III)可以进一步吸附Cr(VI),从而以铬酸铬的方式实现循环吸附富集.本研究将聚吡咯(PPy)分散在壳聚糖/聚乙烯亚胺(CS/PEI)凝胶网络中制备出CS/PPy/PEI复合气凝胶,通过SEM、FT-IR、Zeta电位和UV-vis-NIR光谱分析了CS/PPy/PEI的组成和结构.基于Cr(VI)/Cr(III)的价态转变,在CS/PPy/PEI气凝胶中建立了Cr(VI)吸附-光还原-固定化-再吸附的循环富集过程.结果表明,抗坏血酸作为光催化还原过程中的助催化剂引入,可进一步增强CS/PPy/PEI对铬的富集作用,循环富集 6次后,CS/PPy/PEI的吸附量可达279.69mg/g.由于CS/PPy/PEI气凝胶不含任何其他金属,因此可以通过简单的煅烧有效回收高纯度铬.

, authors=邢建宇1, 2, *, 白玥皓1, 马欢4, 刘娅莉4, 贾睿1, 3, authorsList=邢建宇, 白玥皓, 马欢, 刘娅莉, 贾睿, authorCompany=null, correspAuthors=邢建宇, authorNote=

邢建宇(1979-),男,陕西西安人,副教授,博士,主要从事功能材料的开发与应用相关研究.发表论文40余篇..

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邢建宇(1979-),男,陕西西安人,副教授,博士,主要从事功能材料的开发与应用相关研究.发表论文40余篇..

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邢建宇(1979-),男,陕西西安人,副教授,博士,主要从事功能材料的开发与应用相关研究.发表论文40余篇..

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CS/PPy/PEI气凝胶中Cr(VI)的吸附-还原-固化-再吸附循环富集研究
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邢建宇 1, 2, * , 白玥皓 1 , 马欢 4 , 刘娅莉 4 , 贾睿 1, 3
中国环境科学 | 水污染与控制 2025,45(9): 4904-4913
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中国环境科学 |水污染与控制 2025 , 45 (9) : 4904 -4913
CS/PPy/PEI气凝胶中Cr(VI)的吸附-还原-固化-再吸附循环富集研究
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邢建宇(1979-),男,陕西西安人,副教授,博士,主要从事功能材料的开发与应用相关研究.发表论文40余篇..

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邢建宇(1979-),男,陕西西安人,副教授,博士,主要从事功能材料的开发与应用相关研究.发表论文40余篇..

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邢建宇1, 2, * , 白玥皓1, 马欢4, 刘娅莉4, 贾睿1, 3
作者信息
  • 1.长安大学水利与环境学院,陕西 西安 710064
  • 2.长安大学,旱区地下水文与生态效应教育部重点实验室,陕西 西安 710064
  • 3.长安大学,水利部旱区生态水文与水安全重点实验室,陕西 西安 710064
  • 4.中国电建集团西北勘测设计研究院有限公司,陕西 西安 710065
通讯作者:
* 责任作者,副教授,
作者简介:

邢建宇(1979-),男,陕西西安人,副教授,博士,主要从事功能材料的开发与应用相关研究.发表论文40余篇..

Adsorption-reduction-immobilization-readsorption cyclic enrichment of Cr (VI) in CS/PPy/PEI aerogels
Jian-yu XING1, 2, * , Yue-hao BAI1, Huan MA4, Ya-li LIU4, Rui JIA1, 3
Affiliations
  • 1.School of Water and Environment, Chang'an University, Xi'an 710064, China
  • 2.Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of the Ministry of Education, Chang'an University, Xi'an 710064, China
  • 3.Key Laboratory of Eco-hydrology and Water Security in Arid and Semi-arid Regions of Ministry of Water Resources, Chang'an University, Xi'an 710064, China
  • 4.PowerChina Northwest Engineering Corporation Limited, Xi'an 710065, China
出版时间: 2025-09-20
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Cr(VI)通常以阴离子存在带负电荷,而Cr(III)以阳离子存在带正电荷,通过还原Cr(VI)得到带正电荷的Cr(III)可以进一步吸附Cr(VI),从而以铬酸铬的方式实现循环吸附富集.本研究将聚吡咯(PPy)分散在壳聚糖/聚乙烯亚胺(CS/PEI)凝胶网络中制备出CS/PPy/PEI复合气凝胶,通过SEM、FT-IR、Zeta电位和UV-vis-NIR光谱分析了CS/PPy/PEI的组成和结构.基于Cr(VI)/Cr(III)的价态转变,在CS/PPy/PEI气凝胶中建立了Cr(VI)吸附-光还原-固定化-再吸附的循环富集过程.结果表明,抗坏血酸作为光催化还原过程中的助催化剂引入,可进一步增强CS/PPy/PEI对铬的富集作用,循环富集 6次后,CS/PPy/PEI的吸附量可达279.69mg/g.由于CS/PPy/PEI气凝胶不含任何其他金属,因此可以通过简单的煅烧有效回收高纯度铬.

聚吡咯  /  吸附富集  /  六价铬  /  光还原  /  价态转变

Cr (VI) typically exists as a negatively charged anion, whereas Cr (III) is positively charged as a cation. The positively charged Cr (III) obtained through the reduction of Cr (VI) can further adsorb Cr (VI), thereby enabling cyclic adsorption and enrichment of chromium species. In this study, polypyrrole (PPy) was dispersed in chitosan/polyethyleneimine (CS/PEI) hydrogel network to prepare a composite aerogel named CS/PPy/PEI. The composition and structure of CS/PPy/PEI were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), Zeta potential and UV-vis-NIR spectroscopy. Based on the valence transformation of Cr (VI)/Cr (III), the cyclic enrichment process of Cr (VI) adsorption-photoreduction-immobilization-re-adsorption is established in CS/PPy/PEI aerogel. The results showed that the introduction of ascorbic acid as a co-catalyst during the photocatalytic reduction process could further enhance the enrichment of chromium by CS/PPy/PEI, and the adsorption capacity of CS/PPy/PEI could reach 279.69mg/g after 6cycles of enrichment. Since CS/PPy/PEI aerogels do not contain any other metals, high-purity chromium can be effectively recovered through simple calcination.

polypyrrole  /  adsorption enrichment  /  Cr (VI)  /  photo-reduction  /  valence transition
邢建宇, 白玥皓, 马欢, 刘娅莉, 贾睿. CS/PPy/PEI气凝胶中Cr(VI)的吸附-还原-固化-再吸附循环富集研究. 中国环境科学, 2025 , 45 (9) : 4904 -4913 .
Jian-yu XING, Yue-hao BAI, Huan MA, Ya-li LIU, Rui JIA. Adsorption-reduction-immobilization-readsorption cyclic enrichment of Cr (VI) in CS/PPy/PEI aerogels[J]. China Environmental Science, 2025 , 45 (9) : 4904 -4913 .
  • 陕西省教育厅科学研究计划项目(22JE003)
  • 陕西省自然科学基础研究计划项目(2020JM-226)
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2025年第45卷第9期
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  • 接收时间:2025-02-23
  • 首发时间:2026-10-08
  • 出版时间:2025-09-20
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  • 收稿日期:2025-02-23
基金
陕西省教育厅科学研究计划项目(22JE003)
陕西省自然科学基础研究计划项目(2020JM-226)
作者信息
    1.长安大学水利与环境学院,陕西 西安 710064
    2.长安大学,旱区地下水文与生态效应教育部重点实验室,陕西 西安 710064
    3.长安大学,水利部旱区生态水文与水安全重点实验室,陕西 西安 710064
    4.中国电建集团西北勘测设计研究院有限公司,陕西 西安 710065

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* 责任作者,副教授,
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2种不同金属材料的力学参数
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属
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species
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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