{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,4]],"date-time":"2026-02-04T16:29:57Z","timestamp":1770222597911,"version":"3.49.0"},"reference-count":45,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2021,3,24]],"date-time":"2021-03-24T00:00:00Z","timestamp":1616544000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/04650\/2020"],"award-info":[{"award-number":["UIDB\/04650\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["PTDC\/QUI-QFI\/28020\/2017"],"award-info":[{"award-number":["PTDC\/QUI-QFI\/28020\/2017"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100008530","name":"European Regional Development Fund","doi-asserted-by":"publisher","award":["POCI-01-0145-FEDER-028020"],"award-info":[{"award-number":["POCI-01-0145-FEDER-028020"]}],"id":[{"id":"10.13039\/501100008530","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100011929","name":"Programa Operacional Tem\u00e1tico Factores de Competitividade","doi-asserted-by":"publisher","award":["POCI-01-0145-FEDER-028020"],"award-info":[{"award-number":["POCI-01-0145-FEDER-028020"]}],"id":[{"id":"10.13039\/501100011929","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>The efficient photodegradation of textile dyes is still a challenge, especially considering resistant azo dyes. In this work, zinc\/calcium mixed ferrite nanoparticles prepared by the sol\u2013gel method were coupled with silver by a photodeposition method to enhance the photocatalytic potency. The obtained zinc\/calcium ferrites are mainly cubic-shaped nanoparticles sized 15 \u00b1 2 nm determined from TEM and XRD and an optical bandgap of 1.6 eV. Magnetic measurements indicate a superparamagnetic behavior with saturation magnetizations of 44.22 emu\/g and 27.97 emu\/g, respectively, for Zn\/Ca ferrite and Zn\/Ca ferrite with photodeposited silver. The zinc\/calcium ferrite nanoparticles with photodeposited silver showed efficient photodegradation of the textile azo dyes C.I. Reactive Blue 250 and C.I. Reactive Yellow 145. Subsequent cycles of the use of the photocatalyst indicate the possibility of magnetic recovery and reutilization without a significant loss of efficiency.<\/jats:p>","DOI":"10.3390\/nano11040831","type":"journal-article","created":{"date-parts":[[2021,3,24]],"date-time":"2021-03-24T21:36:51Z","timestamp":1616621811000},"page":"831","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Photodeposition of Silver on Zinc\/Calcium Ferrite Nanoparticles: A Contribution to Efficient Effluent Remediation and Catalyst Reutilization"],"prefix":"10.3390","volume":"11","author":[{"given":"Ricardo J. C.","family":"Fernandes","sequence":"first","affiliation":[{"name":"Physics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal"}]},{"given":"Carlos A. B.","family":"Magalh\u00e3es","sequence":"additional","affiliation":[{"name":"Physics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6094-1713","authenticated-orcid":false,"given":"Ana Rita O.","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"Physics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal"}]},{"given":"Bernardo G.","family":"Almeida","sequence":"additional","affiliation":[{"name":"Physics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal"}]},{"given":"Ana","family":"Pires","sequence":"additional","affiliation":[{"name":"IFIMUP-Instituto de F\u00edsica dos Materiais, Universidade do Porto, R. Campo Alegre, 4169-007 Porto, Portugal"}]},{"given":"Andr\u00e9 Miguel","family":"Pereira","sequence":"additional","affiliation":[{"name":"IFIMUP-Instituto de F\u00edsica dos Materiais, Universidade do Porto, R. Campo Alegre, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1646-7727","authenticated-orcid":false,"given":"Jo\u00e3o Pedro","family":"Araujo","sequence":"additional","affiliation":[{"name":"IFIMUP-Instituto de F\u00edsica dos Materiais, Universidade do Porto, R. Campo Alegre, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5829-6081","authenticated-orcid":false,"given":"Elisabete M. S.","family":"Castanheira","sequence":"additional","affiliation":[{"name":"Physics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4426-9207","authenticated-orcid":false,"given":"Paulo J. G.","family":"Coutinho","sequence":"additional","affiliation":[{"name":"Physics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2021,3,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Schweitzer, L., and Noblet, J. (2018). Water Contamination and Pollution. Green Chemistry-An Inclusive Approach, Elsevier. Chapter 3.6.","DOI":"10.1016\/B978-0-12-809270-5.00011-X"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"358","DOI":"10.1016\/j.envpol.2016.07.011","article-title":"Industrial water pollution, water environment treatment, and health risks in China","volume":"218","author":"Wang","year":"2016","journal-title":"Environ. 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