{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,19]],"date-time":"2026-10-19T17:32:05Z","timestamp":1792431125025,"version":"4.5.0"},"reference-count":53,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2018,11,15]],"date-time":"2018-11-15T00:00:00Z","timestamp":1542240000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Zhejiang Provincial Natural Science Foundation of China","award":["2018C37052"],"award-info":[{"award-number":["2018C37052"]}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["41771509"],"award-info":[{"award-number":["41771509"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Zhejiang agricultural biological resources biochemical manufacturing collaborative innovation center","award":["2016KF0020 and 2016KF0025"],"award-info":[{"award-number":["2016KF0020 and 2016KF0025"]}]},{"name":"The national college students' science and technology innovation project","award":["201711057017"],"award-info":[{"award-number":["201711057017"]}]},{"DOI":"10.13039\/501100017599","name":"Zhejiang Science and Technology Project","doi-asserted-by":"publisher","award":["2016C37078"],"award-info":[{"award-number":["2016C37078"]}],"id":[{"id":"10.13039\/501100017599","id-type":"DOI","asserted-by":"publisher"}]},{"name":"the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry","award":["SRF for ROCS, SEM"],"award-info":[{"award-number":["SRF for ROCS, SEM"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Super-paramagnetic iron oxide nanoparticles (SPIONs)\/gelatin (gel)\/polyvinyl alcohol (PVA) nanoparticles were designed and synthesized by the co-precipitation method and further modified with gel and PVA. These nanoparticles were used for the removal of Cu(II) and Zn(II) from aqueous solutions. The adsorbents were rich in different functional groups for chemisorption and showed effective adsorption properties. The adsorption of Cu(II) and Zn(II) on the SPIONs\/gel and SPIONs\/gel\/PVA materials were investigated with respect to pH, adsorption kinetics, and adsorption isotherms. The adsorption data was fitted to the Langmuir, Freundlich, and Sips models at the optimum pH 5.2 (\u00b10.2) over 60 min; SPIONs\/gel showed maximum adsorption capacities of 47.594 mg\/g and 40.559 mg\/g for Cu(II) and Zn(II); SPIONs\/gel\/PVA showed those of 56.051 mg\/g and 40.865 mg\/g, respectively. The experimental data fitted the pseudo-second-order model, indicating that the process followed chemical monolayer adsorption. In addition, the SPIONs\/gel\/PVA showed better stability and Cu(II) adsorption efficiency than SPIONs\/gel.<\/jats:p>","DOI":"10.3390\/molecules23112982","type":"journal-article","created":{"date-parts":[[2018,11,15]],"date-time":"2018-11-15T11:32:47Z","timestamp":1542281567000},"page":"2982","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":51,"title":["Adsorption of Cu(II) and Zn(II) Ions from Aqueous Solution by Gel\/PVA-Modified Super-Paramagnetic Iron Oxide Nanoparticles"],"prefix":"10.3390","volume":"23","author":[{"given":"Anudari","family":"Dolgormaa","sequence":"first","affiliation":[{"name":"Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chang-jiang","family":"Lv","sequence":"additional","affiliation":[{"name":"Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yin","family":"Li","sequence":"additional","affiliation":[{"name":"Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jian","family":"Yang","sequence":"additional","affiliation":[{"name":"State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Material Medical, China Academy of Chinese Medical Sciences, Beijing 100700, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun-xing","family":"Yang","sequence":"additional","affiliation":[{"name":"Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peng","family":"Chen","sequence":"additional","affiliation":[{"name":"Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hong-peng","family":"Wang","sequence":"additional","affiliation":[{"name":"Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun","family":"Huang","sequence":"additional","affiliation":[{"name":"Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2018,11,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"74","DOI":"10.1016\/j.cej.2016.08.067","article-title":"Biogenic reductive preparation of magnetic inverse spinel iron oxide nanoparticles for the adsorption removal of heavy metals","volume":"307","author":"Lingamdinne","year":"2017","journal-title":"Chem. 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