{"title":"芘集成阳离子有机网络:铬酸盐同时检测和分离的双功能化平台","authors":"Zhi-Jun Li*, , , Jun-Zhen Dai, , , Jing Wang, , , Jin-Xiang Zhang, , , Hua-Dong Xue, , , Hui Wen, , , Ke-Jian Chang, , , Wen-Duo Li, , , Zhen-Yu Cheng, , and , Li-Guo Gao, ","doi":"10.1021/acsomega.5c06393","DOIUrl":null,"url":null,"abstract":"<p >Toxic heavy metal oxoanions constitute a major class of water contaminants, posing significant risks to both human health and ecosystems. Chromate (CrO<sub>4</sub><sup>2–</sup>) is among the representative toxic heavy metal oxoanions, originating from various industrial processes and readily permeating water sources. Consequently, the efficient detection and removal of CrO<sub>4</sub><sup>2–</sup> from water are of great importance. In this study, a series of pyrene-integrated cationic organic networks (CONs) with fluorescent properties and positively charged frameworks was synthesized. By modulating the pyrene unit content using a multivariate strategy, the CON with optimal fluorescence properties (CON-LDU8-30%) was obtained, synthesized with a 3:7 ratio of 1,3,6,8-tetra(1<i>H</i>-imidazol-1-yl)pyrene (TIP) to 1,3,5-tri(1<i>H</i>-imidazol-1-yl)benzene (TIB). In one aspect, CON-LDU8-30% exhibited high sensitivity and selectivity in detecting CrO<sub>4</sub><sup>2–</sup>, demonstrating selective detection of CrO<sub>4</sub><sup>2–</sup> among 16 anions via a “turn-off” fluorescence response. In another aspect, CON-LDU8-30% functioned as an efficient CrO<sub>4</sub><sup>2–</sup> adsorbent, with a kinetic constant and adsorption capacity of 0.466 g mg<sup>–1</sup> min<sup>–1</sup> and 150 mg g<sup>–1</sup>, respectively. Therefore, this study successfully integrates fluorescent sensing and adsorption removal functionalities within CONs, offering a promising material for addressing toxic heavy metal contamination in water.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 38","pages":"44425–44432"},"PeriodicalIF":4.3000,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsomega.5c06393","citationCount":"0","resultStr":"{\"title\":\"Pyrene-Integrated Cationic Organic Network: A Dual-Functionalized Platform for Simultaneous Chromate Detection and Sequestration\",\"authors\":\"Zhi-Jun Li*, , , Jun-Zhen Dai, , , Jing Wang, , , Jin-Xiang Zhang, , , Hua-Dong Xue, , , Hui Wen, , , Ke-Jian Chang, , , Wen-Duo Li, , , Zhen-Yu Cheng, , and , Li-Guo Gao, \",\"doi\":\"10.1021/acsomega.5c06393\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Toxic heavy metal oxoanions constitute a major class of water contaminants, posing significant risks to both human health and ecosystems. 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引用次数: 0
摘要
有毒重金属氧阴离子是一类主要的水污染物,对人类健康和生态系统构成重大风险。铬酸盐(CrO42 -)是具有代表性的有毒重金属氧阴离子之一,来源于各种工业过程和容易渗透的水源。因此,高效地检测和去除水中的CrO42 -具有重要意义。在本研究中,合成了一系列具有荧光性质和带正电框架的芘集成阳离子有机网络(CONs)。采用多元调节芘单位含量的策略,以1,3,6,8-四(1h -咪唑-1-基)芘(TIP)与1,3,5-三(1h -咪唑-1-基)苯(TIB)的3:7比例合成了荧光性能最佳的CON (CON- ldu8 -30%)。一方面,CON-LDU8-30%在检测CrO42 -方面表现出很高的灵敏度和选择性,通过“关闭”荧光响应在16个阴离子中选择性检测CrO42 -。另一方面,CON-LDU8-30%是一种高效的CrO42吸附剂,其动力学常数和吸附量分别为0.466 g mg - 1 min-1和150 mg g - 1。因此,本研究成功地将荧光传感和吸附去除功能集成在con中,为解决水中有毒重金属污染提供了一种有前景的材料。
Pyrene-Integrated Cationic Organic Network: A Dual-Functionalized Platform for Simultaneous Chromate Detection and Sequestration
Toxic heavy metal oxoanions constitute a major class of water contaminants, posing significant risks to both human health and ecosystems. Chromate (CrO42–) is among the representative toxic heavy metal oxoanions, originating from various industrial processes and readily permeating water sources. Consequently, the efficient detection and removal of CrO42– from water are of great importance. In this study, a series of pyrene-integrated cationic organic networks (CONs) with fluorescent properties and positively charged frameworks was synthesized. By modulating the pyrene unit content using a multivariate strategy, the CON with optimal fluorescence properties (CON-LDU8-30%) was obtained, synthesized with a 3:7 ratio of 1,3,6,8-tetra(1H-imidazol-1-yl)pyrene (TIP) to 1,3,5-tri(1H-imidazol-1-yl)benzene (TIB). In one aspect, CON-LDU8-30% exhibited high sensitivity and selectivity in detecting CrO42–, demonstrating selective detection of CrO42– among 16 anions via a “turn-off” fluorescence response. In another aspect, CON-LDU8-30% functioned as an efficient CrO42– adsorbent, with a kinetic constant and adsorption capacity of 0.466 g mg–1 min–1 and 150 mg g–1, respectively. Therefore, this study successfully integrates fluorescent sensing and adsorption removal functionalities within CONs, offering a promising material for addressing toxic heavy metal contamination in water.
ACS OmegaChemical Engineering-General Chemical Engineering
CiteScore
6.60
自引率
4.90%
发文量
3945
审稿时长
2.4 months
期刊介绍:
ACS Omega is an open-access global publication for scientific articles that describe new findings in chemistry and interfacing areas of science, without any perceived evaluation of immediate impact.