Flower-like NiO for the detection of 3-methyl-1-butanol, a microbial volatile organic compound

Author(s)

Vioto, Gabriel C. N. ; Perfecto, Tarcisio M. ; Zito, Cecilia A. ; Volanti, Diogo P.

• Document type: Journal article
• Source: Materials Letters; v. 333, p. 4-pg., 2023-02-15.

Abstract

Volatile organic compounds (VOCs) can indicate the quality or freshness of food. Thus, the development of VOC sensors has a tremendous technological impact. Herein, we report the VOC sensing performance of porous flower-like NiO to 3-methyl-1-butanol (3M1B), a microbial VOC that can be used as a food spoilage marker. Our results show that the NiO-based sensor has high sensitivity and selectivity to 3M1B compared to the other VOCs, including acetone, ethanol, butanone, 2-nonanone, and m-xylene. Moreover, we show that NiO exhibits a high response to 3M1B with fast response times under humidity conditions, being a promising material for real applications. (AU)

• FAPESP's process: 20/06421-1 - Development of sensors derived from metal-organic frameworks to detect microbial volatile organic compounds
• Grantee: Diogo Paschoalini Volanti
• Support Opportunities: Regular Research 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: 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