Synthesis, Surface Modification and Characterisation of Nanoparticles

Wang, L.S.; Hong, Ruoyu

doi:10.5772/10540

Cited by 18 publications

(6 citation statements)

References 57 publications

(53 reference statements)

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“…and evaluation of sample purity. If the sample is finely ground and homogenised; the bulk compositional chemistry of the material can be obtained through XRD [35,100,103,106,113,114].…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

Analytical characterisation of nanoscale zero-valent iron: A methodological review

Chekli

Bayatsarmadi

Sekine

et al. 2016

Analytica Chimica Acta

100

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Zero-valent iron nanoparticles (nZVI) have been widely tested as they are showing significant promise for environmental remediation. However, many recent studies have demonstrated that their mobility and reactivity in subsurface environments are significantly affected by their tendency to aggregate. Both the mobility and reactivity of nZVI mainly depends on properties such as particle size, surface chemistry and bulk composition. In order to ensure efficient remediation, it is crucial to accurately assess and understand the implications of these properties before deploying these materials into contaminated environments. Many analytical techniques are now available to determine these parameters and this paper provides a critical review of their usefulness and limitations for nZVI characterisation. These analytical techniques include microscopy and light scattering techniques for the determination of particle size, size distribution and aggregation state, and X-ray techniques for the characterisation of surface chemistry and bulk composition. Example characterisation data derived from commercial nZVI materials is used to further illustrate method strengths and limitations. Finally, some important challenges with respect to the characterisation of nZVI in groundwater samples are discussed.

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“…and evaluation of sample purity. If the sample is finely ground and homogenised; the bulk compositional chemistry of the material can be obtained through XRD [35,100,103,106,113,114].…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

Analytical characterisation of nanoscale zero-valent iron: A methodological review

Chekli

Bayatsarmadi

Sekine

et al. 2016

Analytica Chimica Acta

100

View full text Add to dashboard Cite

show abstract

“…The growth of the nuclei is then limited via steric repulsion of suitable stabilizers. Currently, the syntheses of most nanoparticles through solvent evaporation are performed in an aqueous solution [33,34]. However, for hydride materials which are highly oxidized by water, the synthesis should be performed under non-aqueous environments.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of LiAlH4 Nanoparticles Leading to a Single Hydrogen Release Step upon Ti Coating

Wang

Aguey‐Zinsou

2017

Inorganics

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Lithium aluminum hydride (LiAlH 4 ) is an interesting high capacity hydrogen storage material with fast hydrogen release kinetics when mechanically activated with additives. Herein, we report on a novel approach to produce nanoscale LiAlH 4 via a bottom-up synthesis. Upon further coating of these nanoparticles with Ti, the composite nanomaterial was found to decompose at 120 • C in one single and extremely sharp exothermic event with instant hydrogen release. This finding implies a significant thermodynamic alteration of the hydrogen properties of LiAlH 4 induced by the synergetic effects of the Ti catalytic coating and nanosizing effects. Ultimately, the decomposition path of LiAlH 4 was changed to LiAlH 4 → Al + LiH + 3/2H 2 .

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“…Liquid phase methods include sol-gel, chemical and electrochemical deposition, hydrolysis, spray, solvent thermal methods (high temperature and high pressure), solvent evaporation pyrolysis, oxidation reduction (room pressure), emulsion, and radiation chemical synthesis. Solid phase techniques include high energy ball milling, thermal decomposition, solid state reaction, spark discharge, and stripping (Wang and Hong 2011).…”

Section: Nanoparticle Synthesismentioning

confidence: 99%

Recent Developments and Applications in Plant-extract Mediated Synthesis of Silver Nanoparticles

Upadhyay

Verma

2015

Analytical Letters

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Green synthesis is a widely used for the preparation of silver nanoparticles. The use of plant extracts for these syntheses has become common in recent years because they are nontoxic, inexpensive, and widely available. Phytochemicals such as terpenoids, flavones, ketones, aldehydes, amides, and carboxylic acids are the primary active ingredients for nanoparticle synthesis. Reaction temperature plays an important role during the reduction process as it influences the reaction time, particle size, and the intensity of the surface plasmon resonance peak. This review presents an overview of recently developed and reported silver nanoparticle syntheses using plant extracts. The role of temperature in nanoparticles synthesis and potential Downloaded by [UQ Library] at 23:17 19 June 2015 2 applications have been reviewed. A brief description of the reaction mechanism and nanoparticle characterization techniques are also included.

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Synthesis, Surface Modification and Characterisation of Nanoparticles

Cited by 18 publications

References 57 publications

Analytical characterisation of nanoscale zero-valent iron: A methodological review

Analytical characterisation of nanoscale zero-valent iron: A methodological review

Synthesis of LiAlH4 Nanoparticles Leading to a Single Hydrogen Release Step upon Ti Coating

Recent Developments and Applications in Plant-extract Mediated Synthesis of Silver Nanoparticles

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