{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,5]],"date-time":"2026-09-05T01:12:23Z","timestamp":1788570743700,"version":"build-2803163510"},"reference-count":42,"publisher":"MDPI AG","issue":"20","license":[{"start":{"date-parts":[[2023,10,15]],"date-time":"2023-10-15T00:00:00Z","timestamp":1697328000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Amino-functionalized silica@resorcinol\u2013formaldehyde nanocomposites (NH2-SiO2@RF) were synthesized for the removal of Cr(VI) from aqueous solutions using the sol\u2013gel technique with two simple preparation steps, including the one-pot synthesis of SiO2@RF using the St\u00f6ber method and (3-aminopropyl)triethoxysilane (APTES) modification. The morphology, particle size, functional group, and thermal stability of the obtained nanocomposites were systematically characterized, with the results indicating a uniform sphericity with a particle size of 200 nm and high thermal stability. The adsorption results demonstrated that the preferred pH value was 2, and the data were well fitted with the Langmuir and Temkin isotherm models and quasi-second-order kinetic equation, indicating a high adsorption capacity. The maximum Cr(VI) adsorption capacity from the nonlinear form of the Langmuir model was 272.6 mg\u00b7g\u22121. The intra-particle diffusion model accurately described the adsorption of Cr(VI) onto NH2-SiO2@RF. The changes in Gibb\u2019s free energy, enthalpy, and entropy revealed that Cr(VI) adsorption onto NH2-SiO2@RF was a spontaneous and endothermic process. Furthermore, high selectivity was demonstrated in the material for the removal of Cr(VI) from commonly coexisting ions. The obtained nanocomposites had good regeneration properties and maintained a removal rate above 85% in the fifth adsorption\u2013desorption experiments. Moreover, under the optimized adsorption conditions, the obtained nanocomposites were preliminarily applied to tannery wastewater, demonstrating an excellent removal effect, which indicates their potential application value.<\/jats:p>","DOI":"10.3390\/polym15204094","type":"journal-article","created":{"date-parts":[[2023,10,15]],"date-time":"2023-10-15T10:47:32Z","timestamp":1697366852000},"page":"4094","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Amino-Functionalized Silica@Resorcinol\u2013Formaldehyde Nanocomposites for the Removal of Cr(VI) from Aqueous Solutions"],"prefix":"10.3390","volume":"15","author":[{"given":"Nan","family":"Li","sequence":"first","affiliation":[{"name":"Faculty of Light Industry, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China"},{"name":"Key Laboratory for Green Technology of Leather Manufacture, China National Light Industry Council, Jinan 250353, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenhui","family":"Lu","sequence":"additional","affiliation":[{"name":"Faculty of Light Industry, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China"},{"name":"Key Laboratory for Green Technology of Leather Manufacture, China National Light Industry Council, Jinan 250353, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2986-3964","authenticated-orcid":false,"given":"Deyi","family":"Zhu","sequence":"additional","affiliation":[{"name":"Faculty of Light Industry, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China"},{"name":"Key Laboratory for Green Technology of Leather Manufacture, China National Light Industry Council, Jinan 250353, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,10,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"126102","DOI":"10.1016\/j.chemosphere.2020.126102","article-title":"Efficient Removal of Cr(VI) from Water by the Uniform Fiber Ball Loaded with Polypyrrole: Static Adsorption, Dynamic Adsorption and Mechanism Studies","volume":"248","author":"Zhang","year":"2020","journal-title":"Chemosphere"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"e13267","DOI":"10.1016\/j.heliyon.2023.e13267","article-title":"Adsorption Mechanism of Cr(VI) on Woody-Activated Carbons","volume":"9","author":"Wang","year":"2023","journal-title":"Heliyon"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1795","DOI":"10.1021\/am5074722","article-title":"Two-Dimensional Titanium Carbide for Efficiently Reductive Removal of Highly Toxic Chromium(VI) from Water","volume":"7","author":"Ying","year":"2015","journal-title":"ACS Appl. 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