The evaluation of Coulombic interaction in the oriented-attachment growth of colloidal nanorods

He, Weidong; Lin, Junhao; Lin, Xiao; Lü, Ning; Zhou, Ming; Zhang, Kelvin H. L.

doi:10.1039/c2an35950b

Cited by 20 publications

(31 citation statements)

References 23 publications

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“…To study the OA mechanism, a portion of such work has been done by constructing analytical models. 77 The theoretical construction of 1D OA nanostructures largely facilitates the understanding of the kinetic process of the OA growth. It was assumed that spherical NPs are attached to the two sides of a cylindrical NR and then grow into 1D OA NCs.…”

Section: A Model For Growing Oa Nr: Roles Of Vdw and CImentioning

confidence: 99%

Understanding the oriented-attachment growth of nanocrystals from an energy point of view: a review

et al. 2014

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Since Penn et al. first discovered the oriented attachment growth of crystals, the oriented attachment mechanism has now become a major research focus in the crystal field, and extensive efforts have been carried out over the past decade to systematically investigate the growth mechanism and the statistical kinetic models. However, most of the work mainly focuses on the experimental results on the oriented attachment growth. In contrast to the previous reviews, our review provides an overview of the recent theoretical advances in oriented attachment kinetics combined with experimental evidences. After a brief introduction to the van der Waals interaction and Coulombic interaction in a colloidal system, the correlation between the kinetic models of oriented attachment growth and the interactions is then our focus. The impact of in situ experimental observation techniques on the study of oriented attachment growth is examined with insightful examples. In addition, the advances in theoretical simulations mainly investigating the thermodynamic origin of these interactions at the atomic level are reviewed. This review seeks to understand the oriented attachment crystal growth from a kinetic point of view and provide a quantitative methodology to rationally design an oriented attachment system with pre-evaluated crystal growth parameters.

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Section: A Model For Growing Oa Nr: Roles Of Vdw and CImentioning

confidence: 99%

Understanding the oriented-attachment growth of nanocrystals from an energy point of view: a review

et al. 2014

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“…4, is consistent with the authors' earlier reports, which indicated that the OA growth of thicker nanorods experiences larger CI compared with the OA growth of thinner nanorods. 14,15 The CI versus AR plots with a xed outer radius are shown in Fig. S1; † these plots are comparable to those in Fig.…”

mentioning

confidence: 74%

Quantitative evaluation of Coulombic interactions in the oriented-attachment growth of nanotubes

Zhang

Wen

et al. 2014

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The Coulombic interaction in the oriented attachment growth of one-dimensional nanotubes is evaluated via a newly-derived analytical expression of the Coulombic interactions between a spherical attaching nanoparticle and a growing nanotube. The correlation between the interaction and the important growth parameters, including nanoparticle/nanotube size, aspect ratio, and nanoparticle-nanotube separation has been analyzed. Our work provides, for the first time, an efficient platform to investigate the growth kinetics and mechanisms of oriented attachment growth of nanotubes.

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“…It imply that the contribution of vdW to ln(GS 1 ) could be considered identical in each solvent. Therefore, CI should directly determine the distinction in growth rate of Te nanochains in different solvents, which was described by Coulomb’s law in equation (4)31:…”

Section: Resultsmentioning

confidence: 99%

Understanding the Solvent Molecules Induced Spontaneous Growth of Uncapped Tellurium Nanoparticles

Liang

Zhu

et al. 2016

Sci Rep

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Understanding the thermodynamic behavior and growth kinetics of colloidal nanoparticles (NPs) is essential to synthesize materials with desirable structures and properties. In this paper, we present specific uncapped Te colloidal NPs obtained through laser ablation of Te in various protic or aprotic solvents. At ambient temperature and pressure, the uncapped Te NPs spontaneously exhibited analogous evolution and growth of “nanoparticle-nanochain-agglomerate-microsphere” in different solvents. The distinctive growth kinetics of the formation of nanochains strongly depended on the polarity and dielectric constant of solvent molecules. The growth rate of agglomerates and microspheres was closely related to the zeta potential of the colloidal solution of Te nanochains and the average size of Te agglomerates. Furthermore, the resulting uncapped Te NPs and Te nanochains displayed a prominent size-dependent and structure-inherited chemical reductive ability. These findings provide insights into the growth of active uncapped nanoparticles in various dispersion media. This study also provides an alternative route in designing novel nanostructures of alloys, telluride, and functional composites using Te as a unique reactive precursor.

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The evaluation of Coulombic interaction in the oriented-attachment growth of colloidal nanorods

Cited by 20 publications

References 23 publications

Understanding the oriented-attachment growth of nanocrystals from an energy point of view: a review

Understanding the oriented-attachment growth of nanocrystals from an energy point of view: a review

Quantitative evaluation of Coulombic interactions in the oriented-attachment growth of nanotubes

Understanding the Solvent Molecules Induced Spontaneous Growth of Uncapped Tellurium Nanoparticles

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