LaMer diagram approach to study the nucleation and growth of Cu2O nanoparticles using supersaturation theory

Arshadi, Shahrzad; Moghaddam, Javad; Eskandarian, Mohammadreza

doi:10.1007/s11814-014-0130-3

Cited by 14 publications

(6 citation statements)

References 34 publications

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“…In spite of LaMer model applicability in describing the kinetics of some nano-synthesis systems such as Cu 2 O, Fe 3 O 4 and etc [28,29], it is not in consistent with the behavior observed for Au, Ag, Pt, Pd and other transition metals nanoparticles [27]. However, LaMer model is one of the pioneering mechanistic approach for studying nucleation and growth in solution phase synthesis system.…”

Section: (A))mentioning

confidence: 90%

Modified Finke–Watzky mechanisms for the two-step nucleation and growth of silver nanoparticles

Amirjani

Haghshenas

2018

Nanotechnology

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In this work, a new modification was made on the Finke−Watzky mechanism for investigating the nucleation and growth steps in the synthesis of silver nanoparticles (AgNPs). UV-vis spectrophotometry and transmission electron microscopy evaluations proved that the former linear form of Finke−Watzky mechanism is not efficient for describing the nucleation and growth steps of AgNPs synthesis. In this manner, the Finke−Watzky mechanism was modified by considering a reversible pseudo first-order reaction for nucleation step. In addition, no assumptions were made in mathematical calculations related to the rate law which were previously adapted by the researchers in this field; i.e. [A] 0 >[A] and k 2 [A] ? k 1 . These considerations led to the development of a kinetic model that is more closely related to what really occurs within the synthesis system. Kinetics data were obtained in a well-known synthesis process of AgNPs namely as sodium borohydride reduction. Furthermore, it was elucidated that polyvinylpyrrolidone (PVP) retards both the nucleation and growth steps resulting in the isotropic growth of seeds; this effect subtly provides a tunable synthesis process for achieving desired size of AgNPs. Moreover, Fouriertransform infrared spectroscopy revealed that the nitrogen atoms present in the PVP molecules are responsible for the interaction of PVP with AgNPs.

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Section: (A))mentioning

confidence: 90%

Modified Finke–Watzky mechanisms for the two-step nucleation and growth of silver nanoparticles

Amirjani

Haghshenas

2018

Nanotechnology

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“…Thirty-nine other papers on metal oxide nanoparticles that cite the 1950 model have been analyzed as summarized in Table S4 in the ESI † for the interested reader. In addition to the papers that have been discussed (vide supra), the following are included in Table S4 (ESI †): cobalt oxide, 233 copper oxide, 234,235 zirconia, 236 silica and titania, 104,[237][238][239][240][241][242][243] iron oxide, [244][245][246][247][248][249] indium oxide, 250 and a mathematical model. 251 In all of these reports save three exceptions, 233,237,238 the 1950 model is used to rationalize the observations, albeit in a ''words-only'' fashion.…”

Section: Formation Of Other Metal-oxide Nanoparticlesmentioning

confidence: 99%

LaMer's 1950 model of particle formation: a review and critical analysis of its classical nucleation and fluctuation theory basis, of competing models and mechanisms for phase-changes and particle formation, and then of its application to silver halide, semiconductor, metal, and metal-oxide nanoparticles

2021

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“…Particle size becomes smaller however, particles were condensed [ Fig.4 (b)-(c)]. LaMer diagram could explain how monodispersed particles are obtained in a homogeneous solution (Fig.7) [12,13,24].When the concentration of the solute goes up to the critical super saturation, crystal nuclei are generated. When the concentration of the solute goes down metastable region, nuclei are growing, until reaction is finished when concentration of the solute goes down under saturated solubility.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Size Control of Sodium Niobate Nanocube at Various Solvothermal Conditions

Oshima

Nakashima

Ueno

et al. 2015

Trans. Mat. Res. Soc. Japan

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Nanocube has attracted interest regarding its synthesis by the wet chemical process. Recently, nanocube with perovskite structure such as barium titanate (BaTiO3) and strontium titanate (SrTiO3) has been studied. In this study, sodium niobate (NaNbO3) was prepared by the solvothermal method and its morphology was investigated. The synthesis was carried out using niobium oxide (Nb2O5) and sodium hydroxide (NaOH) as starting materials, also using ethanol as solvent. X-ray diffraction (XRD) confirmed the presence of perovskite NaNbO3 particles and indicated that the phase is orthorhombic NaNbO3. Scanning electron microscopy (SEM) observation revealed the form of NaNbO3 to be nanocube. Reaction times and concentrations of reaction solutions are important factors for synthesis of nanoparticles. The particle size increases with the reaction times, while the particle size decreases with the concentration of the reaction solutions. The smaller crystals were synthesized in a shorter reaction time at the higher concentration of the reaction solutions.

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LaMer diagram approach to study the nucleation and growth of Cu2O nanoparticles using supersaturation theory

Cited by 14 publications

References 34 publications

Modified Finke–Watzky mechanisms for the two-step nucleation and growth of silver nanoparticles

Modified Finke–Watzky mechanisms for the two-step nucleation and growth of silver nanoparticles

Preparation and Size Control of Sodium Niobate Nanocube at Various Solvothermal Conditions

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