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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.)

Enhancement of 2-butanone sensing properties of SiO2@CoO core-shell structures

Full text
Author(s):
Vioto, Gabriel C. N. [1] ; Perfecto, Tarcisio M. [1] ; Zito, Cecilia A. [1] ; Volanti, Diogo P. [1]
Total Authors: 4
Affiliation:
[1] Sao Paulo State Univ Unesp, Ibilce, Lab Mat Sustainabil LabMatSus, R Cristovao Colombo 2265, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: CERAMICS INTERNATIONAL; v. 46, n. 14, p. 22692-22698, OCT 1 2020.
Web of Science Citations: 0
Abstract

Volatile organic compounds (VOCs) can be associated with some diseases when found in human exhaled breath as a result of alterations in metabolic pathways. Therefore, the development of highly selective sensors to a particular VOC is required. In this paper, we used silica (SiO2) nanospheres as support for the growth of cobalt (II) oxide (CoO) nanosheets, resulting in the SiO2@CoO core-shell structure with a high specific surface area. This structure was applied as a chemoresistive VOCs sensor. The SiO2@CoO material exhibited increased sensitivity to 2-butanone in comparison with acetone, methanol, ethanol, isopropanol, acetaldehyde, benzene, toluene, and m-xylene. The response to 100 ppm of 2-butanone was similar to 44.7, with a response time of 27 s. The enhanced performance might be attributed to the high surface area provided by the unique core-shell structure with 2D CoO nanosheets. (AU)

FAPESP's process: 17/01267-1 - Graphene acid-hollow metal oxides composites for gas sensor
Grantee:Diogo Paschoalini Volanti
Support Opportunities: Regular Research Grants
FAPESP's process: 18/01258-5 - Novel chemical catalytic and photocatalytic processes for the direct conversion of methane and CO2 to products
Grantee:José Maria Correa Bueno
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 18/00033-0 - Sensing devices of volatile organic compounds based on ZnO hollow/p-type semiconductors heterostructures
Grantee:Tarcísio Micheli Perfecto
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 16/25267-8 - Graphene acid composites with hollow CeO2 and Pd-CeO2 yolk-shell structures applied as volatile organic compounds sensors
Grantee:Cecilia de Almeida Zito
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 17/13230-5 - Partial ethanol reforming: stability and selectivity of mix metal amphoteric oxides as catalysts for atmospheric pressure flow reaction
Grantee:Mauricio Boscolo
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 18/08271-7 - Structural, electronic, and chemical characterization of graphene acid composites with yolk-shell CeO2 and yolk-shell Pd-CeO2 nanospheres
Grantee:Cecilia de Almeida Zito
Support Opportunities: Scholarships abroad - Research Internship - Doctorate