{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,6]],"date-time":"2026-02-06T16:34:09Z","timestamp":1770395649627,"version":"3.49.0"},"reference-count":57,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2026,2,4]],"date-time":"2026-02-04T00:00:00Z","timestamp":1770163200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003758","name":"Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa e ao Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico do Maranh\u00e3o\u2014FAPEMA","doi-asserted-by":"crossref","award":["BPV-00342\/22"],"award-info":[{"award-number":["BPV-00342\/22"]}],"id":[{"id":"10.13039\/501100003758","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Brazilian agency CNPq"},{"name":"Portuguese Foundation for Science and Technology (FCT), I.P.","award":["UIDB\/04564\/2020"],"award-info":[{"award-number":["UIDB\/04564\/2020"]}]},{"name":"Portuguese Foundation for Science and Technology (FCT), I.P.","award":["UIDP\/04564\/2020"],"award-info":[{"award-number":["UIDP\/04564\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>This work reports the reuse of waste glass as a sustainable silica source for the synthesis of mesoporous silica, as an alternative to conventional silica precursors. Silica gel was produced through alkaline dissolution of glass powder using sodium hydroxide and subsequently employed as a precursor for the synthesis of porous silica. The waste-derived glass powder and the synthesized silica-based materials were characterized to assess their structural, morphological, surface, and textural properties. XRD analysis confirmed the amorphous nature of all samples, while FTIR spectra indicated successful silica network formation with modifications in bond connectivity. SEM imaging revealed spherical particles with average diameters of approximately 0.19 \u00b1 0.02 \u00b5m for silica gel and 0.15 \u00b1 0.03 \u00b5m for the mesoporous silica. Zeta potential measurements indicated a negative surface charge and good colloidal stability in aqueous media. Nitrogen sorption analysis revealed that the specific surface area was limited by the low solubility of silica gel in acidic media, which prevents ideal condensation on the surface of surfactant micelles. The results demonstrate that waste glass-derived silica gel is a promising precursor, although the synthesis conditions did not yield a highly ordered mesostructure, highlighting the need for further control of precursor solubility and pH.<\/jats:p>","DOI":"10.3390\/ma19030601","type":"journal-article","created":{"date-parts":[[2026,2,4]],"date-time":"2026-02-04T10:02:57Z","timestamp":1770199377000},"page":"601","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Waste-Glass-Derived Porous Silica: Synthesis and Structural Characterization"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6151-0053","authenticated-orcid":false,"given":"Ant\u00f4nia Millena de Oliveira","family":"Lima","sequence":"first","affiliation":[{"name":"Instituto Federal de Educa\u00e7\u00e3o Ci\u00eancia e Tecnologia do Maranh\u00e3o, Campus Imperatriz, S\u00e3o Lu\u00eds 65919-050, Brazil"},{"name":"Foundation for Research and Scientific and Technological Development of Maranh\u00e3o (FAPEMA), S\u00e3o Lu\u00eds 65075-340, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6858-9507","authenticated-orcid":false,"given":"Manuel Pedro Fernandes","family":"Gra\u00e7a","sequence":"additional","affiliation":[{"name":"i3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9007-2221","authenticated-orcid":false,"given":"Imen","family":"Hammami","sequence":"additional","affiliation":[{"name":"i3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4750-2721","authenticated-orcid":false,"given":"Ana Ang\u00e9lica Mathias","family":"Mac\u00eado","sequence":"additional","affiliation":[{"name":"Instituto Federal de Educa\u00e7\u00e3o Ci\u00eancia e Tecnologia do Maranh\u00e3o, Campus Imperatriz, S\u00e3o Lu\u00eds 65919-050, Brazil"}]}],"member":"1968","published-online":{"date-parts":[[2026,2,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Karazi, S.M., Ahad, I.U., and Benyounis, K.Y. 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