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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Metalloporphyrins immobilized in Fe3O4@SiO2 mesoporous submicrospheres: Reusable biomimetic catalysts for hydrocarbon oxidation

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Author(s):
Barbosa, Isaltino A. [1] ; de Sousa Filho, Paulo C. [1] ; da Silva, Douglas L. [1] ; Zanardi, Fabricio B. [1] ; Zanatta, Lucas D. [1] ; de Oliveira, Adilson J. A. [2] ; Serra, Osvaldo A. [1] ; Iamamoto, Yassuko [1]
Total Authors: 8
Affiliation:
[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Chem, Bioinorgan Chem & Rare Earth Labs, Ave Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Phys, Ave Trabalhador Sao Carlense, 400 Pq Arnold Schimi, BR-13566590 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Colloid and Interface Science; v. 469, p. 296-309, MAY 1 2016.
Web of Science Citations: 17
Abstract

We successfully immobilized metalloporphyrins (MeP) in mesoporous silica coating magnetite spheres. In this sense, we prepared two different classes of core@shell supports, which comprise aligned (Fe3O4-AM-MeP, MeP = FeP or MnP) and non-aligned (Fe3O4-NM-MeP, MeP = FeP or MnP) mesoporous magnetic structures. X-ray diffractometry and energy dispersive X-ray spectroscopy confirmed the mesoporous nature of the silica shell of the materials. Magnetization measurements, scanning and transmission electron microscopies (SEM/TEM), electrophoretic mobility (zeta-potential), and infrared spectroscopy (FTIR) also confirm the composition and structure of the materials. The catalysts maintained their catalytic activity during nine reaction cycles toward hydrocarbon oxidation processes without detectable catalyst leaching. The catalysis results revealed a biomimetic pattern of cytochrome P450-type enzymes, thus confirming that the prepared materials are can effectively mimic the activity of such groups. (C) 2016 Elsevier Inc. All rights reserved. (AU)

FAPESP's process: 13/01669-1 - Nanostructured phosphors and core@shell systems containing rare earths: applications in biological labeling, lighting, and visualization
Grantee:Paulo Cesar de Sousa Filho
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 13/08439-1 - Manganeseporphyrin immobilized onto Fe3O4@nSiO2@MCM-41 magnetic composite: biomimetic catalyst applied on hydrocarbons and drug oxidation.
Grantee:Fabrício Bortulucci Zanardi
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 14/22930-2 - Rare Earth-based colloidal luminescent nanoparticles: fundamental studies at the single particle scale and applications as biolabels
Grantee:Paulo Cesar de Sousa Filho
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor