{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,15]],"date-time":"2026-03-15T19:42:05Z","timestamp":1773603725425,"version":"3.50.1"},"reference-count":51,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2023,6,30]],"date-time":"2023-06-30T00:00:00Z","timestamp":1688083200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Sichuan Science and Technology Program","award":["2021YJ0331"],"award-info":[{"award-number":["2021YJ0331"]}]},{"name":"Sichuan Science and Technology Program","award":["XCH2022ZB-03"],"award-info":[{"award-number":["XCH2022ZB-03"]}]},{"name":"Sichuan Science and Technology Program","award":["2018SCL007Y"],"award-info":[{"award-number":["2018SCL007Y"]}]},{"name":"Sichuan Science and Technology Program","award":["TSZW2002"],"award-info":[{"award-number":["TSZW2002"]}]},{"name":"Sichuan Science and Technology Program","award":["22ZDYF0025"],"award-info":[{"award-number":["22ZDYF0025"]}]},{"name":"Key Laboratory of Low-cost Rural Environmental Treatment Technology at Sichuan University of Arts and Science","award":["2021YJ0331"],"award-info":[{"award-number":["2021YJ0331"]}]},{"name":"Key Laboratory of Low-cost Rural Environmental Treatment Technology at Sichuan University of Arts and Science","award":["XCH2022ZB-03"],"award-info":[{"award-number":["XCH2022ZB-03"]}]},{"name":"Key Laboratory of Low-cost Rural Environmental Treatment Technology at Sichuan University of Arts and Science","award":["2018SCL007Y"],"award-info":[{"award-number":["2018SCL007Y"]}]},{"name":"Key Laboratory of Low-cost Rural Environmental Treatment Technology at Sichuan University of Arts and Science","award":["TSZW2002"],"award-info":[{"award-number":["TSZW2002"]}]},{"name":"Key Laboratory of Low-cost Rural Environmental Treatment Technology at Sichuan University of Arts and Science","award":["22ZDYF0025"],"award-info":[{"award-number":["22ZDYF0025"]}]},{"name":"Education Department of Sichuan Province","award":["2021YJ0331"],"award-info":[{"award-number":["2021YJ0331"]}]},{"name":"Education Department of Sichuan Province","award":["XCH2022ZB-03"],"award-info":[{"award-number":["XCH2022ZB-03"]}]},{"name":"Education Department of Sichuan Province","award":["2018SCL007Y"],"award-info":[{"award-number":["2018SCL007Y"]}]},{"name":"Education Department of Sichuan Province","award":["TSZW2002"],"award-info":[{"award-number":["TSZW2002"]}]},{"name":"Education Department of Sichuan Province","award":["22ZDYF0025"],"award-info":[{"award-number":["22ZDYF0025"]}]},{"name":"Key Laboratory of Exploitation and Study of Distinctive Plants in Education Department of Sichuan Province","award":["2021YJ0331"],"award-info":[{"award-number":["2021YJ0331"]}]},{"name":"Key Laboratory of Exploitation and Study of Distinctive Plants in Education Department of Sichuan Province","award":["XCH2022ZB-03"],"award-info":[{"award-number":["XCH2022ZB-03"]}]},{"name":"Key Laboratory of Exploitation and Study of Distinctive Plants in Education Department of Sichuan Province","award":["2018SCL007Y"],"award-info":[{"award-number":["2018SCL007Y"]}]},{"name":"Key Laboratory of Exploitation and Study of Distinctive Plants in Education Department of Sichuan Province","award":["TSZW2002"],"award-info":[{"award-number":["TSZW2002"]}]},{"name":"Key Laboratory of Exploitation and Study of Distinctive Plants in Education Department of Sichuan Province","award":["22ZDYF0025"],"award-info":[{"award-number":["22ZDYF0025"]}]},{"name":"Project of Dazhou science and technology Bureau","award":["2021YJ0331"],"award-info":[{"award-number":["2021YJ0331"]}]},{"name":"Project of Dazhou science and technology Bureau","award":["XCH2022ZB-03"],"award-info":[{"award-number":["XCH2022ZB-03"]}]},{"name":"Project of Dazhou science and technology Bureau","award":["2018SCL007Y"],"award-info":[{"award-number":["2018SCL007Y"]}]},{"name":"Project of Dazhou science and technology Bureau","award":["TSZW2002"],"award-info":[{"award-number":["TSZW2002"]}]},{"name":"Project of Dazhou science and technology Bureau","award":["22ZDYF0025"],"award-info":[{"award-number":["22ZDYF0025"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>A Fe-N conjugated organic polymer (SMP-Fr-Py) was prepared from ferrocene and pyrrole using a Scholl coupling reaction, which significantly improved the performance of Cr(VI) removal compared to the polymer (HCP-Fr-Py) prepared by adding the cross-linker formaldehyde dimethyl acetal (FDA). The results showed that at a pH of 2 and at 25 \u00b0C, the removal of Cr(VI) reached 90% for SMP-Fr-Py and only 58% for HCP-Fr-Py after 20 min of reaction. Subsequently, 99% and 78% were achieved after 120 min of reaction, respectively. The test results showed that the removal reaction followed a pseudo-second-order kinetic model. The removal efficiency decreased with increasing solution pH and initial Cr(VI) concentration, but increased with increasing SMP-Fr-Py dosage, reaching three cycles. The characterization of the reaction complexes and measurements of Cr species conversion revealed the near absence of Cr(VI) species in the solution. Approximately 38% of Cr(VI) was found to be adsorbed on the material surface, with another fraction present in solution (24%) and on the material surface (38%) in the form of Cr(III). The overall study showed that the direct connection of ferrocene and pyrrole in SMP-Fr-Py through C-C bonding increased the conjugated structure of the polymer backbone, which facilitated electron transfer and transport. Furthermore, the Fe-N elements worked synergistically with each other more easily, which improved the removal performance of Cr(VI) and provided a reference for the subsequent work.<\/jats:p>","DOI":"10.3390\/polym15132918","type":"journal-article","created":{"date-parts":[[2023,7,3]],"date-time":"2023-07-03T00:42:46Z","timestamp":1688344966000},"page":"2918","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Fe-N-Doped Conjugated Organic Polymer Efficiently Enhanced the Removal Rate of Cr(VI) from Water"],"prefix":"10.3390","volume":"15","author":[{"given":"Cheng","family":"Tang","sequence":"first","affiliation":[{"name":"Key Laboratory of Low-Cost Rural Environmental Treatment Technology, Education Department of Sichuan Province, Sichuan University of Arts and Science, No. 406, Nanbin Road, 3rd Section, Dazhou 635000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tao","family":"Hu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Low-Cost Rural Environmental Treatment Technology, Education Department of Sichuan Province, Sichuan University of Arts and Science, No. 406, Nanbin Road, 3rd Section, Dazhou 635000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chengzhen","family":"Du","sequence":"additional","affiliation":[{"name":"Key Laboratory of Low-Cost Rural Environmental Treatment Technology, Education Department of Sichuan Province, Sichuan University of Arts and Science, No. 406, Nanbin Road, 3rd Section, Dazhou 635000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ziqin","family":"Liao","sequence":"additional","affiliation":[{"name":"Key Laboratory of Low-Cost Rural Environmental Treatment Technology, Education Department of Sichuan Province, Sichuan University of Arts and Science, No. 406, Nanbin Road, 3rd Section, Dazhou 635000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wenyan","family":"Cheng","sequence":"additional","affiliation":[{"name":"Key Laboratory of Low-Cost Rural Environmental Treatment Technology, Education Department of Sichuan Province, Sichuan University of Arts and Science, No. 406, Nanbin Road, 3rd Section, Dazhou 635000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fen","family":"Wang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Low-Cost Rural Environmental Treatment Technology, Education Department of Sichuan Province, Sichuan University of Arts and Science, No. 406, Nanbin Road, 3rd Section, Dazhou 635000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoli","family":"Hu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Low-Cost Rural Environmental Treatment Technology, Education Department of Sichuan Province, Sichuan University of Arts and Science, No. 406, Nanbin Road, 3rd Section, Dazhou 635000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2889-8081","authenticated-orcid":false,"given":"Kunpeng","family":"Song","sequence":"additional","affiliation":[{"name":"Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Shida Road, Nanchong 637009, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,6,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"8333","DOI":"10.1021\/acs.est.9b01999","article-title":"Liquid Nitrogen Activation of Zero-Valent Iron and Its Enhanced Cr(VI) Removal Performance","volume":"53","author":"Hu","year":"2019","journal-title":"Environ. 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