Mesoporous Copper Nanoparticle/TiO2 Aerogels for Room-Temperature Hydrolytic Decomposition of the Chemical Warfare Simulant Dimethyl Methylphosphonate

2020 ◽  
Vol 3 (4) ◽  
pp. 3503-3512
Author(s):  
Monica McEntee ◽  
Wesley O. Gordon ◽  
Alex Balboa ◽  
Daniel J. Delia ◽  
Catherine L. Pitman ◽  
...  
Keyword(s):  
Room Temperature ◽  
Chemical Warfare ◽  
Copper Nanoparticle ◽  
Dimethyl Methylphosphonate ◽  
Hydrolytic Decomposition

scholarly journals Room temperature decomposition of dimethyl methylphosphonate on cuprous oxide yields atomic phosphorus

2019 ◽  
Vol 680 ◽  
pp. 75-87 ◽  
Author(s):  
Lena Trotochaud ◽  
Ashley R. Head ◽  
Christin Büchner ◽  
Yi Yu ◽  
Osman Karslıoğlu ◽  
...  
Keyword(s):  
Cuprous Oxide ◽  
Room Temperature ◽  
Dimethyl Methylphosphonate ◽  
Temperature Decomposition

Decomposition of Dimethyl Methylphosphonate (DMMP) on Supported Cerium and Iron Co-Impregnated Oxides at Room Temperature

2003 ◽  
Vol 107 (2) ◽  
pp. 580-586 ◽  
Author(s):  
Mark B. Mitchell ◽  
Viktor N. Sheinker ◽  
Aron B. Tesfamichael ◽  
Enid N. Gatimu ◽  
Maya Nunley
Keyword(s):  
Room Temperature ◽  
Dimethyl Methylphosphonate

Magnesium Aluminate Nanoparticles for Chemical Detoxification of Sarin and Soman

2020 ◽  
Vol 20 (6) ◽  
pp. 3547-3553
Author(s):  
G. K. Prasad ◽  
L. K. Pandey ◽  
J. Praveen Kumar ◽  
K. Ganesan ◽  
J. Acharya ◽  
...  
Keyword(s):  
Particle Size ◽  
Spinel Structure ◽  
Room Temperature ◽  
Chemical Warfare Agents ◽  
Nitrogen Adsorption ◽  
Chemical Warfare ◽  
Magnesium Aluminate ◽  
Nitrogen Adsorption Isotherm ◽  
Type Iv ◽  
Warfare Agents

The solutions of Mg(NO3)2, Al(NO3)3, and (NH4)2CO3 were mixed at pH 8 and then heated at 95 °C for 4 h, aged at room temperature for 16 h, and calcined at 650 °C for 4 h to obtain magnesium aluminate nanoparticles. The obtained materials exhibited spinel structure with the particle size being 6 to 26 nm. The nanoparticles demonstrated type IV nitrogen adsorption isotherm, typical of mesoporosity with a surface area of 325 m2/g. They were utilized for studies on chemical detoxification of deadly chemical warfare agents such as sarin and soman. Our results showed that the magnesium aluminate nanoparticles effectively decontaminated more than 99% of sarin and soman within 8–10 min when used at a ratio of 1:50–60% w/w.

Enhanced dimethyl methylphosphonate detection based on two-dimensional WSe2 nanosheets at room temperature

The Analyst ◽  
2020 ◽  
Vol 145 (24) ◽  
pp. 8059-8067
Author(s):  
Bolong Li ◽  
Xinwei Chen ◽  
Chen Su ◽  
Yutong Han ◽  
Huaizhang Wang ◽  
...  
Keyword(s):  
Gas Sensor ◽  
High Performance ◽  
Room Temperature ◽  
Two Dimensional ◽  
Dimethyl Methylphosphonate

A high performance gas sensor based on two-dimensional WSe2 nanosheets was fabricated for dimethyl methylphosphonate detection at room-temperature.

scholarly journals Vapor Selectivity of a Natural Photonic Crystal to Binary and Tertiary Mixtures Containing Chemical Warfare Agent Simulants

Sensors ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 157 ◽  
Author(s):  
Joshua Kittle ◽  
Benjamin Fisher ◽  
Courtney Kunselman ◽  
Aimee Morey ◽  
Andrea Abel
Keyword(s):  
Photonic Crystals ◽  
Chemical Warfare Agent ◽  
Nerve Agent ◽  
Chemical Warfare ◽  
Mustard Gas ◽  
Dimethyl Methylphosphonate ◽  
Vapor Sensing ◽  
Sensitivity Level ◽  
Vapor Mixtures ◽  
Wing Scales

Vapor sensing via light reflected from photonic crystals has been increasingly studied as a means to rapidly identify analytes, though few studies have characterized vapor mixtures or chemical warfare agent simulants via this technique. In this work, light reflected from the natural photonic crystals found within the wing scales of the Morpho didius butterfly was analyzed after exposure to binary and tertiary mixtures containing dimethyl methylphosphonate, a nerve agent simulant, and dichloropentane, a mustard gas simulant. Distinguishable spectra were generated with concentrations tested as low as 30 ppm and 60 ppm for dimethyl methylphosphonate and dichloropentane, respectively. Individual vapors, as well as mixtures, yielded unique responses over a range of concentrations, though the response of binary and tertiary mixtures was not always found to be additive. Thus, while selective and sensitive to vapor mixtures containing chemical warfare agent simulants, this technique presents challenges to identifying these simulants at a sensitivity level appropriate for their toxicity.

scholarly journals Development of a method for derivatization of ethanolamines and its application to sand samples

2021 ◽  
pp. 47-47
Author(s):  
Tomas Rozsypal
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Room Temperature ◽  
Degradation Products ◽  
Chemical Warfare Agents ◽  
Rapid Identification ◽  
Chemical Warfare ◽  
Temperature Calibration ◽  
Nitrogen Mustards ◽  
Warfare Agents

Nitrogen mustards are dangerous and available blistering chemical warfare agents. In the presented study, six derivatization methods are compared for the analysis of degradation products of the most important blistering nitrogen mustards (ethyl diethanolamine, methyl diethanolamine and triethanolamine) by gas chromatography coupled with mass spectrometry. Five silylation methods (using BSTFA and BSA) and one trifluoroacetylation method (using TFAA) were tested. The derivatization reactions were performed in acetonitrile. As the method with optimal results, trifluoroacetylation by TFAA was selected. Analytes reacted with the corresponding reagent rapidly, quantitatively, with stable kinetics and at room temperature. Calibration curves for quantitative analysis of ethanolamines after TFAA derivatization were created. Correspond-ing detection limits varied between 9?10-3 and 7?10-5 mmol?dm-3 for the tested analytes. The developed method was applied for the analysis of ethanolamines after extraction from sand using acetonitrile. Limits of detection were 11.4 to 12.3 ?g of the analyte in 1 g of sand. It is encouraged to use the developed method in military deployable laboratories designated for rapid identification of chemical warfare agents and corresponding degradation products.

Detection of organophosphorus compounds using a surface acoustic wave array sensor based on supramolecular self-assembling imprinted films

2020 ◽  
Vol 12 (17) ◽  
pp. 2206-2214 ◽  
Author(s):  
Yong Pan ◽  
Tengxiao Guo ◽  
Genwei Zhang ◽  
Junchao Yang ◽  
Liu Yang ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Tributyl Phosphate ◽  
Organophosphorus Compounds ◽  
Chemical Warfare Agent ◽  
Chemical Warfare ◽  
Dimethyl Methylphosphonate ◽  
Array Sensor ◽  
Self Assembling

In this study, diisopropyl methylphosphonate (DIMP), tributyl phosphate (TBP), and dimethyl methylphosphonate (DMMP) were selected as organophosphorus chemical warfare agent (CWA) simulants.

Kinetic Mechanism on Synthesis of Copper Nanoparticle from Reduction Reaction - Effect of Temperature

2015 ◽  
Vol 754-755 ◽  
pp. 1012-1016
Author(s):  
Noorsuhana Mohd Yusof ◽  
Junaidah Jai ◽  
Ahmad Hafizie Zaini ◽  
Nur Hashimah Alias ◽  
Nurul Aimi Ghazali ◽  
...  
Keyword(s):  
Copper Nanoparticles ◽  
Room Temperature ◽  
Low Cost ◽  
Copper Nitrate ◽  
Kinetic Mechanism ◽  
Reduction Reaction ◽  
Reducing Agent ◽  
Effect Of Temperature ◽  
Hydroxyl Groups ◽  
Copper Nanoparticle

Copper nanoparticles, due to their interesting properties, low cost preparation and many potential applications in catalysis, cooling fluid or conductive inks, have attracted a lot of interest in recent years. In this study, copper nanoparticles were synthesized through the palm leaves extract that act as reducing agent. In this synthesis route, the hydroxyl groups of the polyphenols in palm extract are capable to act as reducing agent for reduction reaction. The effect of temperature given starting with control parameters at room temperature proceeds to 40, 50, 60, 70 and 80°C with the time length of 2 hours and 10 milimol copper nitrate aqueous solution. Characterization had been conducted using the instrument of UV-vis spectrophotometer, FTIR and ESEM. The average size of all powder nanoparticles was found to 109, 86, 196, 133, 241, and 230nm accordingly from room temperature till 80°C. The correspondence analysis of the results yielded that the optimum temperature was at 40°C which is 86nm of average copper nanoparticle size.

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