Magnesium oxide nanoparticles prepared by ultrasound enhanced hydrolysis of Mg-alkoxides

Štengl, Václav; Bakardjieva, Snejana; Maříková, Monika; Bezdička, Petr; Šubrt, Ján

doi:10.1016/s0167-577x(03)00254-4

Cited by 64 publications

(36 citation statements)

References 20 publications

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“…As is evident from these diagrams, all three of these chemical substances, HD, GD and VX, decompose on the surface of MgO to form non-hazardous products, which is very valuable for practical decontamination. Stengl et al used an improved hypercritical drying method to prepare nanosized MgO with surface area greater than 1200 m 2 g −1 (Stengl et al 2003 ). The highest percentage of the conversion of HD into harmless products after the completion of (Stengl et al 2004 ).…”

Section: Oxides Of Alkaline Earth Metalsmentioning

confidence: 99%

Nanostructured Metal Oxides for Stoichiometric Degradation of Chemical Warfare Agents

Štengl

Henych

Janoš

et al. 2016

Reviews of Environmental Contamination and Toxicology

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Metal oxides have very important applications in many areas of chemistry, physics and materials science; their properties are dependent on the method of preparation, the morphology and texture. Nanostructured metal oxides can exhibit unique characteristics unlike those of the bulk form depending on their morphology, with a high density of edges, corners and defect surfaces. In recent years, methods have been developed for the preparation of metal oxide powders with tunable control of the primary particle size as well as of a secondary particle size: the size of agglomerates of crystallites. One of the many ways to take advantage of unique properties of nanostructured oxide materials is stoichiometric degradation of chemical warfare agents (CWAs) and volatile organic compounds (VOC) pollutants on their surfaces.

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Section: Oxides Of Alkaline Earth Metalsmentioning

confidence: 99%

Nanostructured Metal Oxides for Stoichiometric Degradation of Chemical Warfare Agents

Štengl

Henych

Janoš

et al. 2016

Reviews of Environmental Contamination and Toxicology

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“…[6] Sonochemical synthesis, followed by supercritical drying, was used to prepare MgO nanoparticles from Mg(OCH 3 ) 2 and Mg(OC 2 H 5 ) 2 . [7] MgO nanoparticles with a narrow size distribution have been successfully prepared using a chemical precipitation route in which a polymer (polyvinyl alcohol (PVA) or polyethylene glycol (PEG)) is used for the surface protection of the particle. [8] A novel method, which combines laser vaporization of metals with controlled condensation in a diffusion cloud chamber, is used to synthesize nanoscale MgO nanoparticles of homogeneous size and well-defined composition.…”

Section: Introductionmentioning

confidence: 99%

Microwave‐Assisted Synthesis of Nanocrystalline MgO and Its Use as a Bacteriocide

Makhluf

Dror

Nitzan

et al. 2005

Adv Funct Materials

528

293

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Nanocrystalline particles of MgO were synthesized using microwave radiation in an ethylene glycol solution. The antibacterial activities of the MgO nanoparticles were tested by treating Escherichia coli (Gram negative) and Staphylococcus aureus (Gram positive) cultures with 1 mg mL–1 of the nanoparticles. We have examined the importance of the size effect, pH, and the form of the active MgO species as a bactericidal agent. A clear size dependence of the nanoparticles is observed where the amount of eradicated bacteria was strongly dependent on the particle size.

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“…The first weight loss was due to the removal of water at the physisorption and the interlayer of the sample. [14,41] The second stage was due to dehydroxylation of the hydroxide layer and partial decomposition of MPP anions. [42] The third stage, decomposition temperature up to 526 C, is due to the complete decomposition of intercalated MPP anions.…”

Section: Thermal Analysismentioning

confidence: 99%

Development of a novel nanocomposite consisting of 3-(4-methoxyphenyl)propionic acid and magnesium layered hydroxide for controlled-release formulation

Hashim

Misuan

Isa

et al. 2016

Journal of Experimental Nanoscience

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Magnesium layered hydroxide (MLH) intercalated with anionic 3-(4-methoxyphenyl)propionic acid (MPP) was synthesised by a direct reaction method using magnesium oxide and MPP as precursors. A further coating of chitosan was applied on the external surface of MLHÀMPP nanocomposite to form a new material, named MLHÀMPP/chitosan nanocomposite. The XRD pattern showed an intense and sharp peak at basal spacing 18.9 A , proving that MPP anions were successfully intercalated into the interlayer gallery of MLH in a monolayer arrangement. The XRD pattern of the MLHÀMPP/chitosan nanocomposite shows similar peaks with the MLHÀMPP nanocomposite. The result was also supported by FTIR spectra and elemental analysis. TGA/DTG spectra showed that the thermal stabilities of the guest anion in the both nanocomposites were markedly enhanced. A controlled-release study of the MPP ion from the MLHÀMPP/chitosan nanocomposite showed a slower release compared to MLHÀMPP nanocomposite with an initial rapid release and slow release thereafter. Meanwhile, the release behaviours of MPP ions from both nanocomposites were governed by pseudo-second order kinetics. This result highlights the potential of the nanocomposite as an encapsulated material for the controlled-release formulation of MPP anions.

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Magnesium oxide nanoparticles prepared by ultrasound enhanced hydrolysis of Mg-alkoxides

Cited by 64 publications

References 20 publications

Nanostructured Metal Oxides for Stoichiometric Degradation of Chemical Warfare Agents

Nanostructured Metal Oxides for Stoichiometric Degradation of Chemical Warfare Agents

Microwave‐Assisted Synthesis of Nanocrystalline MgO and Its Use as a Bacteriocide

Development of a novel nanocomposite consisting of 3-(4-methoxyphenyl)propionic acid and magnesium layered hydroxide for controlled-release formulation

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