Amine-Functionalized Poly(pyrrole methane)s synthesized from hydrazine for highly selective mercury removal in water

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2025-03-20 DOI:10.1016/j.seppur.2025.132615

Aijing Zhang, Ningning Xiao, Zhenyu Wang, Yanna Song, Shanshan Li, Li Wang, Jiangtao Feng, Mingtao Li, Wei Yan

{"title":"Amine-Functionalized Poly(pyrrole methane)s synthesized from hydrazine for highly selective mercury removal in water","authors":"Aijing Zhang, Ningning Xiao, Zhenyu Wang, Yanna Song, Shanshan Li, Li Wang, Jiangtao Feng, Mingtao Li, Wei Yan","doi":"10.1016/j.seppur.2025.132615","DOIUrl":null,"url":null,"abstract":"Mercury pollution is becoming an increasingly serious issue in the ecological environment. Herein, two amine-functionalized poly(pyrrole methane)s materials were synthesized from hydrazine for the efficient and selective removal of mercury ions in water. PPDHA and PPD12HA exhibit exceptional adsorption capacities of 1124 and 1080 mg·g-1 at 298 K, respectively, and achieve rapid adsorption equilibrium within 20 and 45 min, demonstrating their superior performance. Meanwhile, the two amine-functionalized poly(pyrrole methane)s have excellent adsorption selectivity, for distribution coefficient (Kd) values of Hg(II) greater than 5 × 105 mL·g-1, which is 103 (αs) times that of other divalent metal ions. Even after 10 adsorption–desorption cycles, the removal efficiency for 10 mg·L-1 of Hg(II) remained above 98 %. Additionally, the adsorption mechanism research reveals that amine groups serve as the primary adsorption sites for Hg(II) through infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and density functional theory (DFT) calculations. This study demonstrates the potential of amine-functionalized poly(pyrrole methane)s synthesized from hydrazine as highly efficient adsorbents for Hg(II) in water, providing a viable approach for further remediation of heavy metal-contaminated wastewater.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"29 1","pages":""},"PeriodicalIF":8.1000,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1016/j.seppur.2025.132615","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Mercury pollution is becoming an increasingly serious issue in the ecological environment. Herein, two amine-functionalized poly(pyrrole methane)s materials were synthesized from hydrazine for the efficient and selective removal of mercury ions in water. PPDHA and PPD12HA exhibit exceptional adsorption capacities of 1124 and 1080 mg·g^-1 at 298 K, respectively, and achieve rapid adsorption equilibrium within 20 and 45 min, demonstrating their superior performance. Meanwhile, the two amine-functionalized poly(pyrrole methane)s have excellent adsorption selectivity, for distribution coefficient (K_d) values of Hg(II) greater than 5 × 10⁵ mL·g^-1, which is 10³ (α_s) times that of other divalent metal ions. Even after 10 adsorption–desorption cycles, the removal efficiency for 10 mg·L^-1 of Hg(II) remained above 98 %. Additionally, the adsorption mechanism research reveals that amine groups serve as the primary adsorption sites for Hg(II) through infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and density functional theory (DFT) calculations. This study demonstrates the potential of amine-functionalized poly(pyrrole methane)s synthesized from hydrazine as highly efficient adsorbents for Hg(II) in water, providing a viable approach for further remediation of heavy metal-contaminated wastewater.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.