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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.)

Crumpled Graphene Decorated with Manganese Ferrite Nanoparticles for Hydrogen Peroxide Sensing and Electrochemical Supercapacitors

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Author(s):
Nonaka, Larissa H. [1] ; Almeida, Thiago S. D. [1] ; Aquino, Caroline B. [2] ; Domingues, Sergio H. [2] ; Salvatierra, V, Rodrigo ; Souza, Victor H. R. [1]
Total Authors: 6
Affiliation:
[1] Fundacao Univ Fed Grande Dourados, Fac Exact Sci & Technol, BR-79825070 Dourados, MS - Brazil
[2] Univ Prebiteriana Mackenzie, MackGraphe Graphene & Nanomat Res Ctr, BR-01302907 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: ACS APPLIED NANO MATERIALS; v. 3, n. 5, p. 4859-4869, MAY 22 2020.
Web of Science Citations: 0
Abstract

Nanomaterials properties are deeply dependent on several features, being easily tuned according to its composition, shape, and dimensionality. Graphene, a two-dimensional (2D) material has outstanding properties that may be tailored by turning its shape to 3D conformations, similar to crumpled paper ball-like structures. Thus, some drawbacks related to graphene restacking could be avoided, besides enlightening a way to explore the properties of graphene-based materials. Herein, we synthesize crumpled graphene structures fully decorated by manganese ferrite (MnFe2O4) nanoparticles in one single step. The samples were produced using an aerosol-assisted capillary compression process and the crumpled paper-ball-like shape of the composites could be adjusted to incorporate increasing amounts of manganese ferrite nanoparticles. We explored two different applications for the obtained materials: as an electrochemical sensor for hydrogen peroxide, and electrochemical supercapacitors. As a proof-of-concept, we synthesized bare manganese ferrite and a composite of flat rGO:MnFe2O4, which assisted us to certify that the best performance is related to the synergistic effect between components, the ratio between them, and the proper shape of the composite. (AU)

FAPESP's process: 18/02142-0 - Binary nanocomposites based on bidimensional transition mixed metal oxides and polyaniline for application in flexible energy storage devices
Grantee:Caroline Brambilla de Aquino
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 17/21988-5 - Nanocomposites based on graphene derivatives, two-dimensional metal oxides and conjugated polymers for application in flexible energy storage devices
Grantee:Sergio Humberto Domingues
Support Opportunities: Regular Research Grants