Phase transition of TiO2 nanoparticles into titanate nanorods via hydrothermal reactions

Author(s)

da Silva, Diego Morais ^{[1, 2]} ; Canuto de Menezes, Beatriz Rossi ^[1] ; Nonato Bezzon, Vinicius Danilo ^[3] ; do Amaral Montanheiro, Thais Larissa ^[1] ; de Macedo, Erenilda Ferreira ^[4] ; Tada, Dayane Batista ^[4] ; Petraconi, Gilberto ^[1] ; Thim, Gilmar Patrocinio ^[1]

Affiliation

^[1] ITA, Lab Plasmas & Proc, Praca Marechal Eduardo Gomes 50, BR-12228970 Sao Jose Dos Campos, SP - Brazil

^[2] Inst Fed Educ Ciencia & Tecnol Sao Paulo IFSP, Rodovia Presidente Dutra, Km 145, Sao Jose Dos Campos, SP - Brazil

^[3] Univ Fed ABC, Ctr Ciencias Nat & Humanas, Ave Estados 5001, BR-09210580 Santo Andre, SP - Brazil

^[4] Univ Fed Sao Paulo, Inst Ciencia & Tecnol, Lab Nanomat & Nanotoxicol, Rua Talim 330, BR-12231280 Sao Jose Dos Campos, SP - Brazil

• Document type: Journal article
• Source: SN APPLIED SCIENCES; v. 1, n. 8 AUG 2019.
• Web of Science Citations: 0

Abstract

Titanate nanorod synthesis method is extremely important due to their large application in electronic, catalysis, and biological areas. However, works reporting the influence of synthesis parameters on the structure, morphology, and properties of titanate nanorods are still rare. Therefore, this work aims to analyze the preparation of titanate nanorods from TiO2 nanoparticles via hydrothermal reaction. The microstructure and morphological properties were evaluated as a function of time, temperature and precursor nature (anatase or anatase/rutile mixture) by X-ray powder diffraction, Raman spectroscopy, transmission electron microscopy and field-emission scanning electron microscopy. The crystallinity of the precursor was the main parameter for the titanate nanorods formation. Besides, temperature has also a direct influence in the fibril morphology. The use of low temperature and anatase/rutile mixture was not able to produce titanate nanorods. Only the use of higher temperatures and pure anatase resulted in rod-like titanates, which showed higher methylene blue photodegradation efficiency than TiO2 nanoparticles. (AU)

• FAPESP's process: 17/24873-4 - PHBV and hydroxybutyrate functionalized CNT nanocomposite: kinetic study of crystallization and correlation with mechanical properties
• Grantee: Thaís Larissa do Amaral Montanheiro
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 19/00568-3 - Functionalization study of titanium nanotubes with MPS
• Grantee: Diego Morais da Silva
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 18/12035-7 - Mechanical and antimicrobial properties of Ag/PMMA nanocomposite
• Grantee: Gilmar Patrocínio Thim
• Support Opportunities: Regular Research Grants
• FAPESP's process: 17/02846-5 - AgVO3/PMMA Nanocomposites: Effect of functionalization with acrilamide on mechanical and antimicrobial properties
• Grantee: Beatriz Rossi Canuto de Menezes Rodrigues
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 17/01697-6 - Synthesis and functionalization of bimetallic nanoparticles for application in photodynamic therapy of cancer
• Grantee: Dayane Batista Tada
• Support Opportunities: Regular Research Grants