Improved 2-CEES sensing performance of spray pyrolized Ru-CdSnO3 nanostructured thin films

Patil, L.A.; Deo, V.V.; Shinde, M.D.; Bari, A.R.; Patil, D.M.; Kaushik, M. P.

doi:10.1016/j.snb.2013.09.091

Cited by 26 publications

(18 citation statements)

References 44 publications

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“…Two of the common simulants for HD, 2-CEES and 1,5-dichloropentane (DCP) have been studied with various sensitive materials [ 40 , 41 , 42 , 43 ]. However, to the best of our knowledge, none of these studies concerned the discrepancy between the sensitive properties of the two compounds.…”

Section: Resultsmentioning

confidence: 99%

The Different Sensitive Behaviors of a Hydrogen-Bond Acidic Polymer-Coated SAW Sensor for Chemical Warfare Agents and Their Simulants

Long

Wang

Cheng

et al. 2015

Sensors

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A linear hydrogen-bond acidic (HBA) linear functionalized polymer (PLF), was deposited onto a bare surface acoustic wave (SAW) device to fabricate a chemical sensor. Real-time responses of the sensor to a series of compounds including sarin (GB), dimethyl methylphosphonate (DMMP), mustard gas (HD), chloroethyl ethyl sulphide (2-CEES), 1,5-dichloropentane (DCP) and some organic solvents were studied. The results show that the sensor is highly sensitive to GB and DMMP, and has low sensitivity to HD and DCP, as expected. However, the sensor possesses an unexpected high sensitivity toward 2-CEES. This good sensing performance can’t be solely or mainly attributed to the dipole-dipole interaction since the sensor is not sensitive to some high polarity solvents. We believe the lone pair electrons around the sulphur atom of 2-CEES provide an electron-rich site, which facilitates the formation of hydrogen bonding between PLF and 2-CEES. On the contrary, the electron cloud on the sulphur atom of the HD molecule is offset or depleted by its two neighbouring strong electron-withdrawing groups, hence, hydrogen bonding can hardly be formed.

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Section: Resultsmentioning

confidence: 99%

The Different Sensitive Behaviors of a Hydrogen-Bond Acidic Polymer-Coated SAW Sensor for Chemical Warfare Agents and Their Simulants

Long

Wang

Cheng

et al. 2015

Sensors

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show abstract

“…[39,68] In fact, owing to real CWAs hazardous manipulation and high toxicity for human health, research works aimed at their recognition have been almost entirely performed using less toxic simulants, compatible with laboratory security standards. [3,7,10,15,28,29,34,55] An ideal simulant should mimic relevant chemico-physical characteristics of the chemical agent, without its associated toxicological properties. [17,23,24,38,45,48,54,80] An overview of the simulants used for the various CWAs, along with the pertaining chemical structures, is provided in Table 2.…”

Section: Introductionmentioning

confidence: 99%

“…Chemical weapons [(chemical warfare agents (CWAs)] developed to kill or incapacitate potential enemies [2][3][4][5] were introduced for military purposes in World War I (1915-1918) and killed over 90 000 people. [6,7] Subsequently, during the 1930s, Germans manufactured nerve agents [8] which were further targeted by the British (1950s) and weaponized by the Americans. [9] The production of such compounds continued throughout the Cold War, subsequently leading to stockpiles of arsenals in U.S. and Russian military deposits.…”

mentioning

confidence: 99%

Metal Oxide Nanosystems As Chemoresistive Gas Sensors for Chemical Warfare Agents: A Focused Review

Barreca

Maccato

Gasparotto

2022

Adv Materials Inter

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The early and efficient detection of chemical warfare agents (CWAs), hazardous compounds resulting in fatal and irreversible health damages, is an issue of primary importance for security safeguard. Despite the efforts undertaken to date, the quest of lower detection limits, higher selectivity/stability, and faster recognition still represents a main bottleneck to effectively counteract such dreadful threats. This review aims at providing a survey on the developments undertaken in chemoresistive gas sensors based on metal oxide nanosystems for CWA recognition. The sensing mechanisms proposed in the literature, as well as the main reasons underlying the performance enhancement for functionalized/composite systems, are reviewed and discussed. The work summarizes key results achieved so far, and attempts to provide guidelines to overcome the main open problems. Efforts are devoted to delivering information on material properties/performance interplay, highlighting challenges in their fabrication and functional characterization. In fact, despite the advances made, a rational design and understanding of interfacial properties, as well as a perfect control over system growth, mandatory for commercial applications, are still missing. At the conclusion, a brief outlook on development prospects for future advancements is presented, endeavoring to provide a vision on the next necessary steps for an eventual technological implementation.

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“…Among them, SMO sensors are a promising technique because of high sensitivity, reversibility, and low cost [5]. However, the operating temperature of SMO sensors is generally high, which limits the wide-spread use [6].…”

Section: Introductionmentioning

confidence: 99%

“…Zinc oxide (ZnO) is a representative n-type semiconductor, which is extensively used for detecting various combustible and toxic gases. Recently, Patil et al [6] demonstrated that platinum activated nanocrystalline ZnO thick film sensors were highly sensitive and quick responding to DMMP. However, ZnO-based sensors were operated at high temperatures above 250 1C due to a high resistance.…”

Section: Introductionmentioning

confidence: 99%

DMMP gas sensing behavior of ZnO-coated single-wall carbon nanotube network sensors

2012

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Improved 2-CEES sensing performance of spray pyrolized Ru-CdSnO3 nanostructured thin films

Cited by 26 publications

References 44 publications

The Different Sensitive Behaviors of a Hydrogen-Bond Acidic Polymer-Coated SAW Sensor for Chemical Warfare Agents and Their Simulants

The Different Sensitive Behaviors of a Hydrogen-Bond Acidic Polymer-Coated SAW Sensor for Chemical Warfare Agents and Their Simulants

Metal Oxide Nanosystems As Chemoresistive Gas Sensors for Chemical Warfare Agents: A Focused Review

DMMP gas sensing behavior of ZnO-coated single-wall carbon nanotube network sensors

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