Journal ArticleDOI
Solvent Effects on the Heterogeneous Adsorption and Reactions of (2-Chloroethyl)ethyl Sulfide on Nanocrystalline Magnesium Oxide
TLDR
The noncatalytic destructive adsorption of 2-chloroethyl)ethyl sulfide (2-CEES) on nanocrystalline magnesium oxide (MgO) was studied in several solvents from pentane to methanol as mentioned in this paper.Abstract:
The noncatalytic destructive adsorption of (2-chloroethyl)ethyl sulfide (2-CEES), a mimic of bis(2-chloroethyl) sulfide (“HD” or Mustard Gas), on nanocrystalline magnesium oxide (AP-MgO) was studied in several solvents from pentane to methanol. The decomposition products formed in these reactions were vinylethyl sulfide and (2-hydroxyethyl)ethyl sulfide. Reactions in pentane allowed the highest reaction rates, while tetrahydrofuran (THF) and methanol gave results quite different from those for the hydrocarbon solvent. Reactions in methanol yielded (methoxyethyl)ethyl sulfide and not the vinylethyl sulfide and (2-hydroxyethyl)ethyl sulfide compounds. These studies showed that the MgO-2-CEES reaction chemistry is significantly affected by the solvent present and can be enhanced by choice of solvent and the addition of small amounts of water. Interestingly, the least polar, least reactive solvent (pentane) allowed the most rapid 2-CEES reactions, indicating that the solvent simply aided material transfer to ...read more
Citations
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Journal ArticleDOI
Gold nanoparticles stabilized on nanocrystalline magnesium oxide as an active catalyst for reduction of nitroarenes in aqueous medium at room temperature
Keya Layek,M. Lakshmi Kantam,Masayuki Shirai,Daisuke Nishio-Hamane,Takehiko Sasaki,H. Maheswaran +5 more
TL;DR: Gold nanoparticles deposited on nanocrystalline magnesium oxide is a very efficient catalyst for the reduction of nitro-arenes in aqueous medium at room temperature as discussed by the authors, and the reaction kinetics of reduction of 4-nitrophenol to 4-aminophenol has been studied by UV-visible spectrophotometry, and its apparent rate constant has been determined and compared with those of other supported gold catalysts.
Journal ArticleDOI
Kinetics and thermodynamics of reactive and vat dyes adsorption on MgO nanoparticles
TL;DR: In this paper, the adsorption behavior of magnesium oxide nanoparticles has been studied for the removal of dyes found in textile wastewater, and the effect of parameters like pH, contact time and temperature on the adaption process was studied.
Journal ArticleDOI
Facile fabrication of mesoporous MgO microspheres and their enhanced adsorption performance for phosphate from aqueous solutions
TL;DR: In this article, mesoporous magnesium oxide microspheres were prepared by a simple precipitation and calcination method using sodium poly (4-styrenesulfonate) (PSS) as structure-directing agent and the as-prepared samples were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), nitrogen adsorption and Fourier transform infrared (FTIR) spectroscopy.
Journal ArticleDOI
An Update on Nanomaterials-Based Textiles for Protection and Decontamination
TL;DR: In this paper, metal oxide nanoparticles (MONPs) such as TiO2 and MgO are used as potential catalysts for the decontamination of chemical and biological warfare agents.
Journal ArticleDOI
Adsorption of thiophenes out of hydrocarbons using metal impregnated nanocrystalline aluminum oxide
TL;DR: A modified nanocrystalline aluminum oxide (Ag-AP-Al 2 O 3 ) was prepared by an impregnation method and characterized in this paper, where the adsorption properties of the modified adsorbent were compared with several other high surface area materials (>200m 2 /g).
References
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BookDOI
Nanoscale materials in chemistry
TL;DR: Nanomaterials in energy storage systems have been studied extensively in the literature (see as mentioned in this paper for an overview of the applications of nanomaterial materials in the field of energy storage.
Journal ArticleDOI
Nanocrystals as Stoichiometric Reagents with Unique Surface Chemistry
Kenneth J. Klabunde,Jane V. Stark,Olga Koper,Cathy Mohs,D. G. Park,Shawn Decker,Y. Jiang,and Isabelle Lagadic,Dajie Zhang +8 more
TL;DR: In this paper, a modified aerogel/hypercritical drying/dehydration method was used for nanocrystalline MgO (AP-MgO) surface areas ranged from 250 to 500 m2/g.
Journal ArticleDOI
Catalytic Solid State Reactions on the Surface of Nanoscale Metal Oxide Particles
TL;DR: In this article, the catalytic effect due to transition metal shell material has been observed, where solid state ion-ion exchange takes place, thus allowing penetration into the MgO or CaO particles and thereby regenerating the transition metal oxide for additional catalytic action.
Journal ArticleDOI
Nanocrystalline metal oxides as new adsorbents for air purification
TL;DR: In this article, nanocrystalline MgO, CaO, and Al 2 O 3 have shown remarkably high capacities to chemically adsorb such organic compounds, including acetone, propionaldehyde, benzaldehyde, trimethylacetaldehyde, ammonia, dimethylamine, N-nitrosodiethylamine and methanol.
Journal ArticleDOI
Nanoscale metal oxide particles as chemical reagents. Intrinsic effects of particle size on hydroxyl content and on reactivity and acid/base properties of ultrafine magnesium oxide
TL;DR: Two sizes of ultrafine magnesium oxide particles have been carefully compared for intrinsic surface chemistry differences as discussed by the authors, and the results show that the difference in surface chemistry difference is not statistically significant.