{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,10]],"date-time":"2026-04-10T02:06:46Z","timestamp":1775786806836,"version":"3.50.1"},"reference-count":25,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2025,2,4]],"date-time":"2025-02-04T00:00:00Z","timestamp":1738627200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Leshan Normal University Research Program, China","award":["KYPY2023\u20130001"],"award-info":[{"award-number":["KYPY2023\u20130001"]}]},{"name":"Leshan Normal University Research Program, China","award":["2023CDJXY\u2013019"],"award-info":[{"award-number":["2023CDJXY\u2013019"]}]},{"name":"Fundamental Research Funds for the Central Universities, China","award":["KYPY2023\u20130001"],"award-info":[{"award-number":["KYPY2023\u20130001"]}]},{"name":"Fundamental Research Funds for the Central Universities, China","award":["2023CDJXY\u2013019"],"award-info":[{"award-number":["2023CDJXY\u2013019"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>CeO2 has a potential application in the purification of organic dye wastewater because of the abundant oxygen vacancy (VO) defects in its crystals. In this study, a cubic CeO2 microsphere with layered interleaved symmetrical 3D flower-like morphology was synthesized, and its adsorption capacity for acid orange 7 (AO7) was further enhanced by Y doping. The impact of varying amounts of Y ions on the phase composition, lattice parameters, and morphology of the product was investigated, revealing that 4 mol.% was determined as the doping level limit of Y ions in CeO2 crystals. XPS, Raman, and H2\u2212TPR techniques were employed to compare surface species changes before and after 4 mol.% Y doping in the CeO2 crystals, including O\u2212Ce(III), O\u2212Ce(IV), O\u2212Y(III), and VO correlation, yielding a rough quantitative assessment of these species. The 4 mol.% Y-doped CeO2 (2.0 g\/L) demonstrated the highest removal rate for 20 mg\/L of AO7 dye within just 20 min to reach adsorption\u2013desorption equilibrium, half the time required by undoped CeO2, achieving an impressive adsorption rate of 94.6%, compared to only 69.5% for undoped CeO2 at 20 min. The adsorption capacity of undoped CeO2 was enhanced by 19.05% through the doping of 4 mol.% Y, achieving a value of 16.56 mg\/L. The feasibility of enhancing the adsorption capacity of CeO2 by Y doping provides a reference for the application of CeO2 and other metal oxides.<\/jats:p>","DOI":"10.3390\/sym17020224","type":"journal-article","created":{"date-parts":[[2025,2,4]],"date-time":"2025-02-04T05:13:43Z","timestamp":1738646023000},"page":"224","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Enhanced Removal of Acid Orange 7 onto Layered Interleaved Symmetrical 3D Flower-like CeO2 with Y(III) Doping"],"prefix":"10.3390","volume":"17","author":[{"given":"Yaohui","family":"Xu","sequence":"first","affiliation":[{"name":"Laboratory for Functional Materials, School of New Energy Materials and Chemistry, Leshan Normal University, Leshan 614000, China"},{"name":"Leshan West Silicon Materials Photovoltaic and New Energy Industry Technology Research Institute, Leshan 614000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yong","family":"Li","sequence":"additional","affiliation":[{"name":"College of Materials Science and Engineering, National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2909-4269","authenticated-orcid":false,"given":"Liangjuan","family":"Gao","sequence":"additional","affiliation":[{"name":"College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1794-0392","authenticated-orcid":false,"given":"Zhao","family":"Ding","sequence":"additional","affiliation":[{"name":"College of Materials Science and Engineering, National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,2,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"e33646","DOI":"10.1016\/j.heliyon.2024.e33646","article-title":"A review of history, properties, classification, applications and challenges of natural and synthetic dyes","volume":"10","author":"Alegbe","year":"2024","journal-title":"Heliyon"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"67970","DOI":"10.1007\/s11356-021-16672-7","article-title":"A review on application of phytoremediation technique for eradication of synthetic dyes by using ornamental plants","volume":"28","author":"Kaushal","year":"2021","journal-title":"Environ. 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