{"title":"Thiol unit-functionalized ultrastable two-dimensional polymer for adsorption of palladium ions in a nitric acid medium","authors":"Hao Wu , Mai Tanaka , Naoki Osawa , Seong-Yun Kim","doi":"10.1016/j.net.2025.103771","DOIUrl":null,"url":null,"abstract":"<div><div>In contrast to the conventional postsynthetic oxidation process for constructing amide linkages, a two-dimensional (2D) polymer (DPA) platform with abundant amide-linkages was directly constructed in this study via a single step using the condensation reaction of trimesyl chloride and melamine. The subsequent postfunctionalization of the as-prepared platform was performed by further reacting it with cysteamine to form thiol units around the DPA platform. Next, the amide-linked thiol unit–functionalized 2D polymer (DPA-BGA) was applied in the selective adsorption of Pd(II) in a nitric acid medium. DPA-BGA exhibited high chemical stability when immersed in 3 M nitric acid for 24 h and high selectivity for Pd(II) over other 13 types of representative metal ions coexisting in the system. Furthermore, using X-ray photoelectron spectroscopy and density functional theory analyses, a plausible adsorption mechanism that involved the interactions between the thiol unit and Pd(II) was identified. Moreover, recycling experiments were performed to demonstrate the reusability of DPA-BGA, which could be used for at least four consecutive adsorption–desorption cycles without a considerable decrease in performance. This study provides a strategy for constructing a stable amide-linked 2D polymer platform and offers a method for its versatile functionalization for application in the field of nuclear research.</div></div>","PeriodicalId":19272,"journal":{"name":"Nuclear Engineering and Technology","volume":"57 11","pages":"Article 103771"},"PeriodicalIF":2.6000,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Engineering and Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1738573325003390","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
In contrast to the conventional postsynthetic oxidation process for constructing amide linkages, a two-dimensional (2D) polymer (DPA) platform with abundant amide-linkages was directly constructed in this study via a single step using the condensation reaction of trimesyl chloride and melamine. The subsequent postfunctionalization of the as-prepared platform was performed by further reacting it with cysteamine to form thiol units around the DPA platform. Next, the amide-linked thiol unit–functionalized 2D polymer (DPA-BGA) was applied in the selective adsorption of Pd(II) in a nitric acid medium. DPA-BGA exhibited high chemical stability when immersed in 3 M nitric acid for 24 h and high selectivity for Pd(II) over other 13 types of representative metal ions coexisting in the system. Furthermore, using X-ray photoelectron spectroscopy and density functional theory analyses, a plausible adsorption mechanism that involved the interactions between the thiol unit and Pd(II) was identified. Moreover, recycling experiments were performed to demonstrate the reusability of DPA-BGA, which could be used for at least four consecutive adsorption–desorption cycles without a considerable decrease in performance. This study provides a strategy for constructing a stable amide-linked 2D polymer platform and offers a method for its versatile functionalization for application in the field of nuclear research.
期刊介绍:
Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters.
NET covers all fields for peaceful utilization of nuclear energy and radiation as follows:
1) Reactor Physics
2) Thermal Hydraulics
3) Nuclear Safety
4) Nuclear I&C
5) Nuclear Physics, Fusion, and Laser Technology
6) Nuclear Fuel Cycle and Radioactive Waste Management
7) Nuclear Fuel and Reactor Materials
8) Radiation Application
9) Radiation Protection
10) Nuclear Structural Analysis and Plant Management & Maintenance
11) Nuclear Policy, Economics, and Human Resource Development