Room temperature carbon monoxide gas sensor using Cu doped OMS-2 nanofibers

Robin Kumar; Jagjiwan Mittal; Neelam Kushwaha; Bruno V. Rao; Shifa Pandey; Chuan Pu Liu

doi:10.1016/j.snb.2018.03.182

Room temperature carbon monoxide gas sensor using Cu doped OMS-2 nanofibers

Robin Kumar, Jagjiwan Mittal, Neelam Kushwaha, Bruno V. Rao, Shifa Pandey, Chuan Pu Liu

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

16 Citations (Scopus)

Abstract

A reversible resistive gas sensor was developed for detecting low amount of carbon monoxide (<35 ppm) in air rapidly at room temperature using Cu doped cryptomelane octahedral molecular sieves (Cu-OMS-2) nanofibers. Sensor showed the quick response of 18% and 33% in 55 s when exposed to 10 ppm and 100 ppm of CO gas, respectively and recovered to the original value in ∼42 s after the removal of CO source. No heating was required either for sensing or recovery. The sensor film displayed good repeatability for multiple exposures of CO at room temperature. The nanofibers were developed using a simple method and showed high selectivity for CO. Adsorption of CO at the Cu-O-Mn site and resonance between Cu²⁺ and Mn⁴⁺ is proposed to be responsible for high sensitivity and selectivity of Cu-OMS-2.

Original language	English
Pages (from-to)	751-760
Number of pages	10
Journal	Sensors and Actuators, B: Chemical
Volume	266
DOIs	https://doi.org/10.1016/j.snb.2018.03.182
Publication status	Published - 2018 Aug 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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title = "Room temperature carbon monoxide gas sensor using Cu doped OMS-2 nanofibers",

abstract = "A reversible resistive gas sensor was developed for detecting low amount of carbon monoxide (<35 ppm) in air rapidly at room temperature using Cu doped cryptomelane octahedral molecular sieves (Cu-OMS-2) nanofibers. Sensor showed the quick response of 18% and 33% in 55 s when exposed to 10 ppm and 100 ppm of CO gas, respectively and recovered to the original value in ∼42 s after the removal of CO source. No heating was required either for sensing or recovery. The sensor film displayed good repeatability for multiple exposures of CO at room temperature. The nanofibers were developed using a simple method and showed high selectivity for CO. Adsorption of CO at the Cu-O-Mn site and resonance between Cu2+ and Mn4+ is proposed to be responsible for high sensitivity and selectivity of Cu-OMS-2.",

author = "Robin Kumar and Jagjiwan Mittal and Neelam Kushwaha and Rao, {Bruno V.} and Shifa Pandey and Liu, {Chuan Pu}",

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AU - Kumar, Robin

AU - Mittal, Jagjiwan

AU - Kushwaha, Neelam

AU - Rao, Bruno V.

AU - Pandey, Shifa

AU - Liu, Chuan Pu

PY - 2018/8/1

Y1 - 2018/8/1

N2 - A reversible resistive gas sensor was developed for detecting low amount of carbon monoxide (<35 ppm) in air rapidly at room temperature using Cu doped cryptomelane octahedral molecular sieves (Cu-OMS-2) nanofibers. Sensor showed the quick response of 18% and 33% in 55 s when exposed to 10 ppm and 100 ppm of CO gas, respectively and recovered to the original value in ∼42 s after the removal of CO source. No heating was required either for sensing or recovery. The sensor film displayed good repeatability for multiple exposures of CO at room temperature. The nanofibers were developed using a simple method and showed high selectivity for CO. Adsorption of CO at the Cu-O-Mn site and resonance between Cu2+ and Mn4+ is proposed to be responsible for high sensitivity and selectivity of Cu-OMS-2.

AB - A reversible resistive gas sensor was developed for detecting low amount of carbon monoxide (<35 ppm) in air rapidly at room temperature using Cu doped cryptomelane octahedral molecular sieves (Cu-OMS-2) nanofibers. Sensor showed the quick response of 18% and 33% in 55 s when exposed to 10 ppm and 100 ppm of CO gas, respectively and recovered to the original value in ∼42 s after the removal of CO source. No heating was required either for sensing or recovery. The sensor film displayed good repeatability for multiple exposures of CO at room temperature. The nanofibers were developed using a simple method and showed high selectivity for CO. Adsorption of CO at the Cu-O-Mn site and resonance between Cu2+ and Mn4+ is proposed to be responsible for high sensitivity and selectivity of Cu-OMS-2.

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