000120174 001__ 120174 000120174 005__ 20240319081013.0 000120174 0247_ $$2doi$$a10.3390/ma15155266 000120174 0248_ $$2sideral$$a131213 000120174 037__ $$aART-2022-131213 000120174 041__ $$aeng 000120174 100__ $$aVargas-Urbano, Mónica A. 000120174 245__ $$aEffect of Ethylene Glycol: Citric Acid Molar Ratio and pH on the Morphology, Vibrational, Optical and Electronic Properties of TiO2 and CuO Powders Synthesized by Pechini Method 000120174 260__ $$c2022 000120174 5060_ $$aAccess copy available to the general public$$fUnrestricted 000120174 5203_ $$aHigh-purity TiO2 and CuO powders were synthesized by the Pechini method, an inexpensive and easy-to-implement procedure to synthetize metal oxides. The variables of synthesis were the ethylene glycol:citric acid molar ratio and the pH. High reproducibility of the anatase and tenorite phase was obtained for all synthesis routes. The degree of purity of the powders was confirmed by XRD, FTIR, UV-Vis absorption and XPS spectra. SEM and TEM images revealed the powders are composed of micrometer grains that can have a spherical shape (only in the TiO2) or formed by a non-compacted nanocrystalline conglomerate. FTIR spectra only displayed vibrational modes associating TiO2 and CuO with nanoparticle behavior. UV-Vis absorption spectra revealed the values of maximum absorbance percentage of both systems are reached in the ultraviolet region, with percentages above 83% throughout the entire visible light spectrum for the CuO system, a relevant result for solar cell applications. Finally, XPS experiments allow the observation of the valence bands and the calculation of the energy bands of all oxides. 000120174 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000120174 590__ $$a3.4$$b2022 000120174 592__ $$a0.563$$b2022 000120174 591__ $$aMETALLURGY & METALLURGICAL ENGINEERING$$b20 / 79 = 0.253$$c2022$$dQ2$$eT1 000120174 593__ $$aMaterials Science (miscellaneous)$$c2022$$dQ2 000120174 591__ $$aPHYSICS, APPLIED$$b57 / 160 = 0.356$$c2022$$dQ2$$eT2 000120174 593__ $$aCondensed Matter Physics$$c2022$$dQ2 000120174 591__ $$aPHYSICS, CONDENSED MATTER$$b29 / 67 = 0.433$$c2022$$dQ2$$eT2 000120174 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b174 / 343 = 0.507$$c2022$$dQ3$$eT2 000120174 591__ $$aCHEMISTRY, PHYSICAL$$b84 / 161 = 0.522$$c2022$$dQ3$$eT2 000120174 594__ $$a5.2$$b2022 000120174 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000120174 700__ $$aMarín, Lorena 000120174 700__ $$aCastillo, Winny Mónica 000120174 700__ $$aRodríguez, Luis Alfredo 000120174 700__ $$0(orcid)0000-0002-6761-6171$$aMagén, César$$uUniversidad de Zaragoza 000120174 700__ $$aManotas-Albor, Milton 000120174 700__ $$aDiosa, Jesús Evelio 000120174 700__ $$aGross, Katherine 000120174 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada 000120174 773__ $$g15, 15 (2022), 5266 [16 pp.]$$pMaterials (Basel)$$tMaterials$$x1996-1944 000120174 8564_ $$s6217064$$uhttps://zaguan.unizar.es/record/120174/files/texto_completo.pdf$$yVersión publicada 000120174 8564_ $$s2910283$$uhttps://zaguan.unizar.es/record/120174/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000120174 909CO $$ooai:zaguan.unizar.es:120174$$particulos$$pdriver 000120174 951__ $$a2024-03-18-15:21:37 000120174 980__ $$aARTICLE