Tuning humidity for highly selective detection of methanol and 2-butanone using MOF-derivatives NiO microrods

Theodoro, Reinaldo S.; Sá, Bruna S.; Perrone, Olavo M.; Perfecto, Tarcísio M.; Volanti, Diogo P.

doi:10.1007/s10854-023-11665-3

J Mater Sci: Mater Electron

2023

DOI: 10.1007/s10854-023-11665-3

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Tuning humidity for highly selective detection of methanol and 2-butanone using MOF-derivatives NiO microrods

Reinaldo S. Theodoro,

Bruna S. Sá,

Olavo M. Perrone

et al.

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2024

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Cited by 4 publications

References 56 publications

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HMS optical fiber gas sensor based on double-layer WO3@CQDs porous film modified cladding for detecting 2-butanone gas at room temperature

Wang,

Li,

Yang

et al. 2024

Chemical Engineering Journal

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HMS optical fiber gas sensor based on double-layer WO3@CQDs porous film modified cladding for detecting 2-butanone gas at room temperature

Wang,

Li,

Yang

et al. 2024

Chemical Engineering Journal

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Enhanced butanone chemoresistive sensor utilizing cobalt oxide nanoparticles

Zito,

Theodoro,

Perfecto

et al. 2024

Ceramics International

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Multiple-Yolk–Shell NiO Microspheres for Selective Detection of m-Xylene

Theodoro,

Sanghikian Marques dos Santos,

Soares de Sá

et al. 2024

ACS Appl. Mater. Interfaces

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m-Xylene is a volatile organic compound that is extensively used in various industrial processes. It is toxic, posing significant risks to human health and the environment. Therefore, developing gas sensors with high sensitivity and selectivity for mxylene detection is critical. In this work, we demonstrated the synthesis of NiO-yolk double-shell (NiO-YDS) and NiO-yolk tripleshell (NiO-YTS) derived from NiO/Ni-BTC and NiO/Ni-PTA composites, respectively, using the microwave-assisted solvothermal method from Ni-BTC-derived NiO spheres. The NiO/Ni-BTC composite has trimesic acid (H 3 BTC) as an organic linker, while NiO/Ni-PTA has p-terephthalic acid (PTA). We investigated the sensing properties of these materials for 2-butanone, 2-nonanone, 3methyl-1-butanol, acetone, benzene, ethanol, methanol, and mxylene. These composites exhibited excellent sensitivity and selectivity for detecting m-xylene under dry conditions. Specifically, the NiO-YTS sensor showed a sensitivity of 217.5% to m-xylene, while the NiO-YDS sensor demonstrated a sensitivity of 179.8% at 350 °C in dry air. We emphasize the NiO-YTS composite due to its superior sensitivity and selectivity in detecting m-xylene compared with the NiO-YDS composite. The NiO-YTS sensor exhibited stable and reproducible sensing performance for 100 ppm of m-xylene under optimum working conditions, with a theoretical detection limit of 5.43 ppb and relatively fast response time (89 s) and recovery time (191 s). This work describes an easy method for synthesizing NiO-YDS and NiO-YTS derived from NiO/Ni-BTC and NiO/Ni-PTA composites. It demonstrates that these composites represent a new class of materials that can potentially enhance the sensitivity and selectivity of m-xylene gas sensors.

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Tuning humidity for highly selective detection of methanol and 2-butanone using MOF-derivatives NiO microrods

Cited by 4 publications

References 56 publications

HMS optical fiber gas sensor based on double-layer WO3@CQDs porous film modified cladding for detecting 2-butanone gas at room temperature

HMS optical fiber gas sensor based on double-layer WO3@CQDs porous film modified cladding for detecting 2-butanone gas at room temperature

Enhanced butanone chemoresistive sensor utilizing cobalt oxide nanoparticles

Multiple-Yolk–Shell NiO Microspheres for Selective Detection of m-Xylene

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