Quantitative nucleation and growth kinetics of gold nanoparticles via model-assisted dynamic spectroscopic approach

Zhou, Yao; Wang, Huixuan; Lin, Whei-Min; Lin, Liqin; Gao, Yixian; Yang, Feng; Du, Mingming; Fang, Weiping; Huang, Jiale; Sun, Daohua; Li, Qingbiao

doi:10.1016/j.jcis.2013.06.027

Cited by 29 publications

(67 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Fig. 198 Furthermore, a Reduction-Crystallization (R-C) model (1) which deals with the two major events of such a physicochemical process were proposed. Results revealed the growth of Au NPs via a zeroth-order reaction with respect to the concentration of the Au atoms.…”

Section: Plant-mediated Synthesismentioning

confidence: 99%

“…198 Furthermore, the sigmoidal Abs-t kinetic data were also fitted with the classical JMAK model (2) which was originally developed for the phase transformation process. 198 Furthermore, the sigmoidal Abs-t kinetic data were also fitted with the classical JMAK model (2) which was originally developed for the phase transformation process.…”

Section: View Article Onlinementioning

confidence: 99%

See 1 more Smart Citation

Bio-inspired synthesis of metal nanomaterials and applications

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Plant-mediated Synthesismentioning

confidence: 99%

Section: View Article Onlinementioning

confidence: 99%

Bio-inspired synthesis of metal nanomaterials and applications

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…Most of the data on the kinetics of nanomaterial synthesis reported in literature is based on transient variation in the UV absorbance , , . Zhou et al evaluated the kinetics of Au NP synthesis using UV‐Vis data and proposed a redox crystallization model to explain the observations. The model contains two rate constants, namely, k 1 for the nucleation step which covers the transformation from soluble gold atoms to gold solid, and k 2 for the growth step.…”

Section: Resultsmentioning

confidence: 99%

“…Borohydride reduction is typically suitable only for small sizes with polydispersity appearing at later stages of the reaction . In literature on kinetics of Ag NP synthesis, most of the studies present quantitative kinetics from UV‐Vis data .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reaction Engineering for Continuous Production of Silver Nanoparticles

Deshpande

Kulkarni

2017

Chem Eng & Technol

View full text Add to dashboard Cite

A scalable process for the production of silver nanoparticles that allows for complete conversion of the limiting reactant is analyzed in detail. The kinetics of silver nanoparticle synthesis using citrate reduction are investigated and used for development of a reaction engineering model to facilitate the reactor design. The effect of temperature, pH, concentration and mixing (axial dispersion) on the rates of nucleation and growth are analyzed quantitatively. An approach that considers reaction kinetics coupled with quality of dispersion is developed for reactor design as well as selection of reactor configurations for the synthesis of specific particle sizes. The developed approach has been applied for continuous production of 10-L suspension silver nanoparticles with very narrow particle size distribution.

show abstract

Quantitative In Situ Visualization of Thermal Effects on the Formation of Gold Nanocrystals in Solution

et al. 2021

View full text Add to dashboard Cite

Understanding temperature effects in nanochemistry requires real‐time in situ measurements because this key parameter of wet‐chemical synthesis simultaneously influences the kinetics of chemical reactions and the thermodynamic equilibrium of nanomaterials in solution. Here, temperature‐controlled liquid cell transmission electron microscopy is exploited to directly image the radiolysis‐driven formation of gold nanoparticles between 25 °C and 85 °C and provide a deeper understanding of the atomic‐scale processes determining the size and shape of gold colloids. By quantitatively comparing the nucleation and growth rates of colloidal assemblies with classical models for nanocrystal formation, it is shown that the increase of the molecular diffusion and the solubility of gold governs the drastic changes in the formation dynamics of nanostructures in solution with temperature. In contraction with the common view of coarsening processes in solution, it is also demonstrated that the dissolution of nanoparticles and thus the Ostwald ripening is not only driven by size effects. Furthermore, visualizing thermal effects on faceting processes at the single nanoparticle level reveals how the competition between the growth speed and the surface diffusion dictates the final shape of nanocrystals.

show abstract

Quantitative nucleation and growth kinetics of gold nanoparticles via model-assisted dynamic spectroscopic approach

Cited by 29 publications

References 47 publications

Bio-inspired synthesis of metal nanomaterials and applications

Bio-inspired synthesis of metal nanomaterials and applications

Reaction Engineering for Continuous Production of Silver Nanoparticles

Quantitative In Situ Visualization of Thermal Effects on the Formation of Gold Nanocrystals in Solution

Contact Info

Product

Resources

About