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Herein, an ionic porous organic polymer (designated as HB-IPOP) was synthesized through a quaternization reaction between hexa(imidazole-1-yl)benzene and 5,5\u2032-Bis(bromomethyl)-2,2\u2032-bipyridine. HB-IPOP exhibited high saturation uptake capacities, specifically 292 mg\u00b7g\u22121 for Cr2O72\u2212 and 531 mg\u00b7g\u22121 for ReO4\u2212, and demonstrated exceptional selectivity for both Cr2O72\u2212 and ReO4\u2212. Additionally, HB-IPOP demonstrates high recyclability, allowing its reuse over at least five cycles. DFT calculations confirmed that the superior interaction sites and binding energies of HB-IPOP with Cr2O72\u2212 and ReO4\u2212 outperform the affinities of other competing anions. This theoretical validation aligns with the experimentally observed high capacity and selectivity of HB-IPOP for these oxo-anions. Hence, HB-IPOP emerges as a promising candidate to replace current adsorbent materials in the effective removal of Cr2O72\u2212 and TcO4\u2212 anions from water.<\/jats:p>","DOI":"10.3390\/molecules30030473","type":"journal-article","created":{"date-parts":[[2025,1,22]],"date-time":"2025-01-22T03:40:17Z","timestamp":1737517217000},"page":"473","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Imidazolium-Functionalized Ionic Porous Organic Polymer for Efficient Removal of Oxo-Anions Pollutants from Water"],"prefix":"10.3390","volume":"30","author":[{"given":"Wei","family":"Huang","sequence":"first","affiliation":[{"name":"College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China"},{"name":"Key Laboratory of Jiangxi Province for Special Optoelectronic Artificial Crystal Materials, School of Chemistry and Chemical Engineering, Jinggangshan University, Ji\u2019an 343009, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hong","family":"Zhong","sequence":"additional","affiliation":[{"name":"Key Laboratory of Jiangxi Province for Special Optoelectronic Artificial Crystal Materials, School of Chemistry and Chemical Engineering, Jinggangshan University, Ji\u2019an 343009, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junyue","family":"Lin","sequence":"additional","affiliation":[{"name":"Key Laboratory of Jiangxi Province for Special Optoelectronic Artificial Crystal Materials, School of Chemistry and Chemical Engineering, Jinggangshan University, Ji\u2019an 343009, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaodan","family":"Li","sequence":"additional","affiliation":[{"name":"Key Laboratory of Jiangxi Province for Special Optoelectronic Artificial Crystal Materials, School of Chemistry and Chemical Engineering, Jinggangshan University, Ji\u2019an 343009, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jie","family":"Mao","sequence":"additional","affiliation":[{"name":"School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hongliang","family":"Dai","sequence":"additional","affiliation":[{"name":"Key Laboratory of Jiangxi Province for Special Optoelectronic Artificial Crystal Materials, School of Chemistry and Chemical Engineering, Jinggangshan University, Ji\u2019an 343009, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuntong","family":"Li","sequence":"additional","affiliation":[{"name":"Key Laboratory of Jiangxi Province for Special Optoelectronic Artificial Crystal Materials, School of Chemistry and Chemical Engineering, Jinggangshan University, Ji\u2019an 343009, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shengchang","family":"Xiang","sequence":"additional","affiliation":[{"name":"College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,1,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1072","DOI":"10.1126\/science.1127291","article-title":"The challenge of micropollutants in aquatic systems","volume":"313","author":"Schwarzenbach","year":"2006","journal-title":"Science"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"301","DOI":"10.1038\/nature06599","article-title":"Science and technology for water purification in the coming decades","volume":"452","author":"Shannon","year":"2008","journal-title":"Nature"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"155","DOI":"10.1080\/10408440500534032","article-title":"Toxicity and carcinogenicity of chromium compounds in humans","volume":"36","author":"Costa","year":"2006","journal-title":"Crit. 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