Gas Sensing Characteristics of ZnO-doped SnO&lt;sub&gt;2&lt;/sub&gt; Sensors for Simulants of the Chemical Agents

Yun, Kwang-Hyun; Yun, Kyyoul; Cha, Geon-Young; Kim, Jae Chang; Lee, Duk–Dong; Huh, Jeung Soo

doi:10.4028/0-87849-966-0.9

Cited by 5 publications

(7 citation statements)

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“…These results have significant implications, taking into account that they do not require complex systems/methods, like electronic noises/ sensor arrays/data processing 4,14 and that previous Mn 3 O 4 sensors showed no significant selectivity. 29 Notably, the best response values to DPGME displayed by the present Mn 3 O 4 −Au nanomaterials are the highest ever reported in the literature for DPGME detection by chemoresistive SnO 2 -containing gas sensors, 2,3,12 and even the actual bare Mn 3 O 4 outperforms some of the previously reported tin dioxide-based systems. 4,5 These very attractive functional performances could be related to the morphological organization of the target materials and, in particular, to their inherent porosity, with voids extending into the system structure, ensuring a high contact area for the interaction with gaseous analytes.…”

Section: Acs Applied Materials and Interfacesmentioning

confidence: 74%

Sensing Nitrogen Mustard Gas Simulant at the ppb Scale via Selective Dual-Site Activation at Au/Mn₃O₄ Interfaces

Bigiani

Zappa

Barreca

et al. 2019

ACS Appl. Mater. Interfaces

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The efficient detection of chemical warfare agents (CWAs), putting at stake human life and global safety, is of paramount importance in the development of reliable sensing devices for safety applications. Herein, we present the fabrication of Mn3O4-based nanocomposites containing noble metal particles for the gas-phase detection of a simulant of vesicant nitrogen mustard, i.e., di(propylene glycol) monomethyl ether (DPGME). The target materials were fabricated by chemical vapor deposition of manganese oxide on Al2O3 substrates and subsequent functionalization with silver or gold via radio frequency sputtering. The obtained high purity composites, characterized by an intimate metal/oxide contact, yielded an outstanding efficiency in the detection of DPGME. In particular, sensing of the latter analyte with an ultralow detection limit of 0.6 ppb could be performed selectively with respect to other CWA simulants. In addition, the tuneability of selectivity patterns as a function of metal nanoparticle nature paves the way to the development of efficient and selective devices for practical end uses.

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Section: Acs Applied Materials and Interfacesmentioning

confidence: 74%

Sensing Nitrogen Mustard Gas Simulant at the ppb Scale via Selective Dual-Site Activation at Au/Mn₃O₄ Interfaces

Bigiani

Zappa

Barreca

et al. 2019

ACS Appl. Mater. Interfaces

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“…These details indicate the nanostructured metal oxides like TiO 2 , ZnO and MnO 2 may show sensitive and dissociative adsorbent of gas-phase DMMP at ambient temperature, promising sensing behavior for the mass detection of gas-phase organophosphorus compounds. However, only a few experimental studies have been reported on the adsorption of toxic chemicals or chemical warfare agent simulants on nano-structured MnO 2 at ambient temperature [40]. …”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, zinc oxide doped in SnO 2 may improve the reliability and sensitivity of the SnO 2 sensors for simulants of the CWAs at 250 to 400 °C [40]. It is suggested that the absorption capability of DMMP on MnO 2 surface is possibly improved by ZnO modification.…”

Section: Introductionmentioning

confidence: 99%

Study of a QCM Dimethyl Methylphosphonate Sensor Based on a ZnO-Modified Nanowire-Structured Manganese Dioxide Film

Pei

Ding

et al. 2010

Sensors

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Sensitive, selective and fast detection of chemical warfare agents is necessary for anti-terrorism purposes. In our search for functional materials sensitive to dimethyl methylphosphonate (DMMP), a simulant of sarin and other toxic organophosphorus compounds, we found that zinc oxide (ZnO) modification potentially enhances the absorption of DMMP on a manganese dioxide (MnO2) surface. The adsorption behavior of DMMP was evaluated through the detection of tiny organophosphonate compounds with quartz crystal microbalance (QCM) sensors coated with ZnO-modified MnO2 nanofibers and pure MnO2 nanofibers. Experimental results indicated that the QCM sensor coated with ZnO-modified nanostructured MnO2 film exhibited much higher sensitivity and better selectivity in comparison with the one coated with pure MnO2 nanofiber film. Therefore, the DMMP sensor developed with this composite nanostructured material should possess excellent selectivity and reasonable sensitivity towards the tiny gaseous DMMP species.

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“…The inspiration for this material system comes from the fact that zinc titanates have been used as excellent sorbents for sulfur removal in the petroleum industry 10 . It is also noteworthy that zinc oxide is used to fabricate sensors for detection of organophosphorus agents in the gas phase 11 …”

Section: Background and Introductionmentioning

confidence: 99%

Zinc Titanate Nanofibers for the Detoxification of Chemical Warfare Simulants

Ramaseshan

Ramakrishna

2007

Journal of the American Ceramic Society

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Fabrication of a novel ceramic nanofiber system viz. zinc titanate using the well‐known electrospinning technology with polyvinylpyrrolidone as a binder is reported. Use of zinc titanates as reactive sorbents to detoxify chemical warfare agents is hypothesized and proved. The zinc titanate nanofibers are tested against simulants of nerve and mustard agents and show satisfactory destructive activity. The extent of detoxification is measured using GC‐MS analysis. The products of reaction of zinc titanate against the simulants are identified and are found to be relatively harmless. The possibility of replacement of conventional‐activated carbon by electrospun ceramic nanofibers for face masks and protective clothing is proposed.

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Gas Sensing Characteristics of ZnO-doped SnO<sub>2</sub> Sensors for Simulants of the Chemical Agents

Cited by 5 publications

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Sensing Nitrogen Mustard Gas Simulant at the ppb Scale via Selective Dual-Site Activation at Au/Mn₃O₄ Interfaces

Sensing Nitrogen Mustard Gas Simulant at the ppb Scale via Selective Dual-Site Activation at Au/Mn₃O₄ Interfaces

Study of a QCM Dimethyl Methylphosphonate Sensor Based on a ZnO-Modified Nanowire-Structured Manganese Dioxide Film

Zinc Titanate Nanofibers for the Detoxification of Chemical Warfare Simulants

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Gas Sensing Characteristics of ZnO-doped SnO<sub>2</sub> Sensors for Simulants of the Chemical Agents

Cited by 5 publications

References 0 publications

Sensing Nitrogen Mustard Gas Simulant at the ppb Scale via Selective Dual-Site Activation at Au/Mn3O4 Interfaces

Sensing Nitrogen Mustard Gas Simulant at the ppb Scale via Selective Dual-Site Activation at Au/Mn3O4 Interfaces

Study of a QCM Dimethyl Methylphosphonate Sensor Based on a ZnO-Modified Nanowire-Structured Manganese Dioxide Film

Zinc Titanate Nanofibers for the Detoxification of Chemical Warfare Simulants

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Sensing Nitrogen Mustard Gas Simulant at the ppb Scale via Selective Dual-Site Activation at Au/Mn₃O₄ Interfaces

Sensing Nitrogen Mustard Gas Simulant at the ppb Scale via Selective Dual-Site Activation at Au/Mn₃O₄ Interfaces