Influence of titanium precursor on photoluminescent emission of micro-cube-shaped CaTiO3

Author(s)

Mazzo, Tatiana Martelli ^[1] ; do Nascimento Libanori, Gabriela Santilli ^[1] ; Moreira, Mario Lucio ^[2] ; Avansi, Jr., Waldir ^[3] ; Mastelaro, Valmor Roberto ^[4] ; Varela, Jose Arana ^[5] ; Longo, Elson ^[5]

Affiliation

^[1] Univ Fed Sao Paulo, Dept Ciencias Mar, BR-11030400 Santos, SP - Brazil

^[2] Univ Fed Pelotas, Inst Fis & Matemat, BR-96001970 Pelotas, RS - Brazil

^[3] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP - Brazil

^[4] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13566590 Sao Carlos, SP - Brazil

^[5] Univ Estadual Paulista, Inst Quim, INCTMN LIEC, BR-14801907 Araraquara, SP - Brazil

• Document type: Journal article
• Source: Journal of Luminescence; v. 165, p. 130-137, SEP 2015.
• Web of Science Citations: 8

Abstract

For this research, we studied the influence of titanium tetrachloride (TC) and titanium tetraisopropoxide (TTP) precursors on CaTiO3 (CTO) synthesis by employing a microwave-assisted hydrothermal (MAH) method regarding their respective short-, medium- and long-range features to determine if the use of different titanium precursors enhances the structural evolution of the material. The growth mechanism for the formation of the micro-cube-shaped CTO is proposed to obtain nanoparticle aggregation of self-assembly nanoplates. The disorder coupled to the oxygen vacancies of {[}TiO5]-{[}TiO6] in complex clusters in the CTO 1 powder and twists in bonding between the {[}TiO6]-{[}TiO6] complex clusters in the CTO 2 powder were mainly responsible for photoluminescent (PL) emission. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC