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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.)

Growth of magnetic cobalt hexacyanoferrate nanoparticles onto bacterial cellulose nanofibers

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Author(s):
Sabio, Rafael Miguel [1, 2] ; da Silva, Robson Rosa [1] ; Sargentelli, Vagner [3] ; Gutierrez, Junkal [4, 5] ; Tercjak, Agnieszka [4] ; Lima Ribeiro, Sidney Jose [3] ; Barud, Hernane da Silva [2]
Total Authors: 7
Affiliation:
[1] Univ Sao Paulo, Sao Carlos Inst Phys, Sao Carlos, SP - Brazil
[2] Univ Araraquara, Lab Biopolimeros Biomat BIOPOLMAT, BR-14801340 Araraquara, SP - Brazil
[3] Sao Paulo State Univ, Inst Chem, UNESP, BR-14800060 Araraquara, SP - Brazil
[4] Univ Basque Country UPV EHU, Dept Chem & Environm Engn, GMT, Fac Engn, Plaza Europa 1, Donostia San Sebastian 20018 - Spain
[5] Univ Basque Country UPV EHU, Fac Engn Vitoria Gasteiz, C Nieves Cano 12, Vitoria 01006 - Spain
Total Affiliations: 5
Document type: Journal article
Source: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS; v. 30, n. 18, SI, p. 16956-16965, SEP 2019.
Web of Science Citations: 0
Abstract

Natural polymers templates capable to maneuver the growth and spatial distribution of functional nanoparticles have been furthering the development of a new generation of sustainable and versatile materials. Pure cellulose nanofibrils, biosynthesized by bacteria, naturally deliver a 3D interconnected network of lightweight, foldable and sustainable matrices. Cellulose membrane is an exceptional biodegradable and biocompatible and high mechanical strength substrate with a native fibrous structure that can be easily applied as a structure-directing host to produce nanosized materials with optical, electrical or magnetic properties. In this work, we investigated the preparation of magnetic membranes by using bacterial cellulose nanofibers to control the growth of molecule-based magnetic nanoparticles such as Prussian Blue analogs. Magnetic Cobalt-Prussian Blue (CoHCEFe) nanoparticles were synthesized in situ by hydrothermal method through a diffusion-limited precipitation process onto a bacterial cellulose nanofiber network. Scanning electron microscopy and atomic force microscopy clearly unveiled a homogeneous distribution of immobilized COHCEFe crystalline nanoparticles whose size ranges from 94 to 70 nm as a function of nanoparticle content (up 28 wt%). Magnetic force microscopy showed that these nanometric COHCEFe crystalline nanoparticles well dispersed in BC fibers network respond to the magnetic field applied to the MFM-tip. This nano/nano association approach can provide functionally advanced materials for application in catalysis, adsorption of radionuclides, energy generation, data storage, biosensing, optical and magnetic devices. (AU)

FAPESP's process: 16/06612-6 - Printed and implantable biosensor made from biopolymers for long-term monitoring
Grantee:Robson Rosa da Silva
Support type: Scholarships in Brazil - Post-Doctorate