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Comprehensive characterization using XRD, SEM, HRTEM, and XRF mapping confirmed the formation of highly crystalline wurtzite ZnO-spheres. Although no distinct Eu2O3 reflections were initially observed by XRD, XRF mapping and XANES analyses revealed a heterogeneous distribution of europium within the calcined material. Eu-rich domains coexist with regions dominated by crystalline ZnO nanospheres, suggesting partial segregation of europium during the thermal transformation process. XANES analysis verified europium predominantly in the +3 oxidation state. The photocatalytic efficiency of the resulting material was evaluated through the degradation of Rhodamine 6G (R6G) under UV irradiation. The ZnO-spheres achieving \u223c90% R6G degradation after 300 min, following pseudo-first-order kinetics (kapp= 0.601 h\u20131). This significant activity is attributed to the synergistic effect of the spherical morphology, which provides a surface area and improved light-harvesting efficiency, and the synergistic role of the heterostructure formed between the ZnO-spheres and the Eu3+ rich domains, which facilitates spatial charge carrier separation at the interface, reducing electron\u2013hole recombination. This work underscores the potential of LDHs as sacrificial templates for creating morphologically controlled mixed oxide photocatalysts and demonstrates the ZnO-spheres as a highly promising candidate for environmental remediation applications.<\/jats:p>","DOI":"10.1021\/acsomega.6c05773","type":"journal-article","created":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T19:01:54Z","timestamp":1790190114000},"page":"59512-59521","source":"Crossref","is-referenced-by-count":0,"title":["One-Step Thermal\nTreatment Route to Obtain ZnO Nanospheres\nfrom ZnAlEu LDH Nanotubes"],"prefix":"10.1021","volume":"11","author":[{"given":"Thaina Calac\u0327a","family":"Futamata","sequence":"first","affiliation":[{"name":"Instituto de Fi\u0301sica da Universidade de Sa\u0303o Paulo , , ,","place":["Sa\u0303o Paulo, Sa\u0303o Paulo, Brazil, 05508-090"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dimy","family":"Nanclares","sequence":"additional","affiliation":[{"name":"Instituto de Fi\u0301sica da Universidade de Sa\u0303o Paulo , , ,","place":["Sa\u0303o Paulo, Sa\u0303o Paulo, Brazil, 05508-090"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexandre Candido","family":"Teixeira","sequence":"additional","affiliation":[{"name":"Instituto de Fi\u0301sica da Universidade de Sa\u0303o Paulo , , ,","place":["Sa\u0303o Paulo, Sa\u0303o Paulo, Brazil, 05508-090"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karina Torre da","family":"Fonseca","sequence":"additional","affiliation":[{"name":"Instituto de Fi\u0301sica da Universidade de Sa\u0303o Paulo , , ,","place":["Sa\u0303o Paulo, Sa\u0303o Paulo, Brazil, 05508-090"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5453-1737","authenticated-orcid":true,"given":"Danilo","family":"Mustafa","sequence":"additional","affiliation":[{"name":"Instituto de Fi\u0301sica da Universidade de Sa\u0303o Paulo , , ,","place":["Sa\u0303o Paulo, Sa\u0303o Paulo, Brazil, 05508-090"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,9,23]]},"reference":[{"key":"2026100610501064700_cit1","doi-asserted-by":"publisher","first-page":"052001","DOI":"10.1088\/1755-1315\/514\/5\/052001","article-title":"Pollution\nand Treatment of Dye Waste-Water","volume":"514","author":"Liu","year":"2020","journal-title":"IOP Conf.\nSer. Earth Environ. Sci."},{"key":"2026100610501064700_cit2","volume-title":"Alford","author":"Cooh","year":"1974"},{"issue":"5","key":"2026100610501064700_cit3","doi-asserted-by":"publisher","first-page":"2120","DOI":"10.1167\/iovs.07-1476","article-title":"In vivo toxicity study of rhodamine 6G in the rat retina","volume":"49","author":"Thaler","year":"2008","journal-title":"Invest. Ophthalmol. Visual Sci."},{"key":"2026100610501064700_cit4","doi-asserted-by":"publisher","first-page":"100220","DOI":"10.1016\/j.wri.2023.100220","article-title":"Degradation of Rhodamine\ndyes by Advanced Oxidation Processes (AOPs)\n\u2013 Focus on cavitation and photocatalysis - A critical review","volume":"30","author":"Mohod","year":"2023","journal-title":"Water Resour. 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