Vapor-phase impregnation decomposition technique as an alternativeto decorate MWCNTs withPt and PdNPs for ammonia gas detection

S. Capula-Colindres; G. Terán; E. Torres-Santillán; K. Aguir; O. G. Súchil; J. C. Velázquez; J. Oliva

doi:10.1016/j.colcom.2021.100490

Vapor-phase impregnation decomposition technique as an alternativeto decorate MWCNTs withPt and PdNPs for ammonia gas detection

S. Capula-Colindres, G. Terán, E. Torres-Santillán, K. Aguir, O. G. Súchil, J. C. Velázquez, J. Oliva

Centro de Estudios Científicos y Tecnológicos (CECyT 2) “Miguel Bernard”

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The Vapor Phase Impregnation decomposition method (VP-IDM) is presented in this study as an alternative technique to obtain well-dispersed metallic nanoparticles on CNTs, for ammonia (NH₃) gas detection. We have analyzed the effectiveness of this method by using chemiresistive sensors (CHRs) based on multi-walled carbon nanotubes (MWCNTs) decorated with Pt and Pd nanoparticles (NPs). We measured their sensitivity through their electrical resistance variation in the presence of NH₃ gas at concentrations from 10 to 200 ppm. Pt/MWCNTs showed the highest sensitivity of about 120% at 100 ppm and 250 °C. It was revealed that the size, dispersion, temperature and type of metal NPs deposited on the MWCNTs are crucial for the detection of the NH₃ gas by the CHRs.

Original language	English
Article number	100490
Journal	Colloids and Interface Science Communications
Volume	44
DOIs	https://doi.org/10.1016/j.colcom.2021.100490
State	Published - Sep 2021

Keywords

Ammonia gas detection
Chemiresistive sensor
Interdigitated electrode
Multi-walled carbon nanotubes
Paladium
Platinum

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10.1016/j.colcom.2021.100490

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title = "Vapor-phase impregnation decomposition technique as an alternativeto decorate MWCNTs withPt and PdNPs for ammonia gas detection",

abstract = "The Vapor Phase Impregnation decomposition method (VP-IDM) is presented in this study as an alternative technique to obtain well-dispersed metallic nanoparticles on CNTs, for ammonia (NH3) gas detection. We have analyzed the effectiveness of this method by using chemiresistive sensors (CHRs) based on multi-walled carbon nanotubes (MWCNTs) decorated with Pt and Pd nanoparticles (NPs). We measured their sensitivity through their electrical resistance variation in the presence of NH3 gas at concentrations from 10 to 200 ppm. Pt/MWCNTs showed the highest sensitivity of about 120% at 100 ppm and 250 °C. It was revealed that the size, dispersion, temperature and type of metal NPs deposited on the MWCNTs are crucial for the detection of the NH3 gas by the CHRs.",

keywords = "Ammonia gas detection, Chemiresistive sensor, Interdigitated electrode, Multi-walled carbon nanotubes, Paladium, Platinum",

author = "S. Capula-Colindres and G. Ter{\'a}n and E. Torres-Santill{\'a}n and K. Aguir and S{\'u}chil, {O. G.} and Vel{\'a}zquez, {J. C.} and J. Oliva",

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year = "2021",

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doi = "10.1016/j.colcom.2021.100490",

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T1 - Vapor-phase impregnation decomposition technique as an alternativeto decorate MWCNTs withPt and PdNPs for ammonia gas detection

AU - Capula-Colindres, S.

AU - Terán, G.

AU - Torres-Santillán, E.

AU - Aguir, K.

AU - Súchil, O. G.

AU - Velázquez, J. C.

AU - Oliva, J.

PY - 2021/9

Y1 - 2021/9

N2 - The Vapor Phase Impregnation decomposition method (VP-IDM) is presented in this study as an alternative technique to obtain well-dispersed metallic nanoparticles on CNTs, for ammonia (NH3) gas detection. We have analyzed the effectiveness of this method by using chemiresistive sensors (CHRs) based on multi-walled carbon nanotubes (MWCNTs) decorated with Pt and Pd nanoparticles (NPs). We measured their sensitivity through their electrical resistance variation in the presence of NH3 gas at concentrations from 10 to 200 ppm. Pt/MWCNTs showed the highest sensitivity of about 120% at 100 ppm and 250 °C. It was revealed that the size, dispersion, temperature and type of metal NPs deposited on the MWCNTs are crucial for the detection of the NH3 gas by the CHRs.

AB - The Vapor Phase Impregnation decomposition method (VP-IDM) is presented in this study as an alternative technique to obtain well-dispersed metallic nanoparticles on CNTs, for ammonia (NH3) gas detection. We have analyzed the effectiveness of this method by using chemiresistive sensors (CHRs) based on multi-walled carbon nanotubes (MWCNTs) decorated with Pt and Pd nanoparticles (NPs). We measured their sensitivity through their electrical resistance variation in the presence of NH3 gas at concentrations from 10 to 200 ppm. Pt/MWCNTs showed the highest sensitivity of about 120% at 100 ppm and 250 °C. It was revealed that the size, dispersion, temperature and type of metal NPs deposited on the MWCNTs are crucial for the detection of the NH3 gas by the CHRs.

KW - Ammonia gas detection

KW - Chemiresistive sensor

KW - Interdigitated electrode

KW - Multi-walled carbon nanotubes

KW - Paladium

KW - Platinum

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U2 - 10.1016/j.colcom.2021.100490

DO - 10.1016/j.colcom.2021.100490

M3 - Artículo

AN - SCOPUS:85113689651

SN - 2215-0382

VL - 44

JO - Colloids and Interface Science Communications

JF - Colloids and Interface Science Communications

M1 - 100490

ER -

Vapor-phase impregnation decomposition technique as an alternativeto decorate MWCNTs withPt and PdNPs for ammonia gas detection

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Keywords

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