Direct route for preparing multi-oxide inorganic nanocomposites of nanoparticles-decorated nanotubes

Autor(es)

Baraldi Dias, Carlos Sato ^[1] ; Garcia, Flavio ^[2] ; Mazali, Italo Odone ^[3] ; Cardoso, Mateus Borba ^{[4, 1]} ; de Souza e Silva, Juliana Martins ^{[1, 5]}

Afiliação do(s) autor(es)

^[1] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Synchrotron Light Lab LNLS, Campinas, SP - Brazil

^[2] CBPF Brazilian Ctr Res Phys, Rio De Janeiro, RJ - Brazil

^[3] Univ Estadual Campinas, Inst Chem, Funct Mat Lab, UNICAMP, Campinas, SP - Brazil

^[4] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Nanotechnol Natl Lab LNNano, Campinas, SP - Brazil

^[5] Martin Luther Univ Halle Wittenberg, Inst Phys, Halle - Germany

• Tipo de documento: Artigo Científico
• Fonte: Journal of Alloys and Compounds; v. 774, p. 1133-1139, FEB 5 2019.
• Citações Web of Science: 1

Resumo

To address the need for new synthetic methods to prepare novel nanocomposites, here we present a direct route for preparing multi-oxide inorganic composites with specific architecture of nanoparticles decorating nanotubes. Our route involves cycles of impregnation of a metallo-organic precursor of nickel into hematite nanotubes and subsequently thermally decomposing it, that we named IDC. We characterized the nanotubes before and after ten sequential IDC. The obtained material is a composite of NiO nanoparticles grown onto the walls of hematite nanotubes. Hematite nanotubes are morphologic and chemically stable during the entire synthetic process. In the synthetic route tested by us, virtually any metallo-organic precursor/combinations of precursors can be used. Our method can be explored to obtain tailored nanocomposites consisting of nanoparticles with different oxides combinations decorating the walls of nanotubes, with potential use such as in catalysis and biomedicine. (C) 2018 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 11/17402-9 - Desenvolvimento de nanopartículas magnéticas multifuncionais para terapia do câncer
• Beneficiário: Heberton Wender Luiz dos Santos
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 11/21954-7 - Funcionalização de nanopartículas compósitas para aplicações biomédicas
• Beneficiário: Mateus Borba Cardoso
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 11/18647-5 - Estudo do acoplamento magnético entre vórtices
• Beneficiário: Flavio Garcia
• Linha de fomento: Auxílio à Pesquisa - Regular