Reuse of surfactant/oil phase in nanoparticle synthesis using W/O microemulsions

Sarkar, Deepa; Gupta, P. M.; Anand, Gautam; Khilar, Kartic C.

doi:10.1002/aic.11376

Cited by 5 publications

(4 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Model predictions were obtained by solving equations for n A , n B , n C , n S , N 0 , N 1 , N 1 [2] , and V using variable step RungeÀKutta scheme. Model predictions require values of solubility of gold G s and fusion efficiency β.…”

Section: ' Results and Discussionmentioning

confidence: 99%

“…We have extended the model of Singh and Kumar 29 to semibatch mode of synthesis in this work with the assumption that the vessel contents are well mixed. The extended model, discussed in detail in the Supporting Information, tracks time variations of concentration of gold precursor (n A ), reducing agent (n B ), reduced gold atoms (n C ), numbers of non-nucleated micelles (N 0 ), and zeroth (N 1 ), first (n S ), and second moment (N 1 [2] ) of nanoparticles contained in micelles. The typical structure of model equations is illustrated below with the equation for concentration of reduced gold atoms:…”

Section: Research Notementioning

confidence: 99%

“…Reverse microemulsions consisting of thermodynamically stable nanometer-sized water pools surrounded by surfactants in an oil medium have been successfully used to synthesize nanoparticles by reactive crystallization, 1 and have emerged as a viable route for large scale wet-synthesis of nanoparticles. Importantly, it is also shown that the surfactant/oil phase can be recovered and reused for several cycles of nanoparticle synthesis, 2 which is critical in terms of economic viability.…”

Section: ' Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Reagent Addition Rate and Temperature on Synthesis of Gold Nanoparticles in Microemulsion Route

Muralidharan

Subramanian

Nallamuthu

et al. 2011

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Nanoparticle synthesis in a microemulsion route is typically controlled by changing the water to surfactant ratio, concentration of precursors, and/or concentration of micelles. The experiments carried out in this work with chloroauric acid and hydrazine hydrate as precursors in water/AOT-Brij30/isooctane microemulsions show that the reagent addition rate can also be used to tune the size of stable spherical gold nanoparticles to some extent. The particle size goes through a minimum with variation in feed addition rate. The increase in particle size with an increase in reaction temperature is in agreement with an earlier report. A population balance model is used to interpret the experimental findings. The reduced extent of nucleation at low feed addition rates and suppression of nucleation due to the finite rate of mixing at higher addition rates produce a minimum in particle size. The increase in particle size at higher reaction temperatures is explained through an increase in fusion efficiency of micelles which dissipates supersaturation; increase in solubility is shown to play an insignificant role. The moderate polydispersity of the synthesized particles is due to the continued nucleation and growth of particles. The polydispersity of micelle sizes by itself plays a minor role.

show abstract

Section: ' Results and Discussionmentioning

confidence: 99%

Section: Research Notementioning

confidence: 99%

Section: ' Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Reagent Addition Rate and Temperature on Synthesis of Gold Nanoparticles in Microemulsion Route

Muralidharan

Subramanian

Nallamuthu

et al. 2011

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…Micro emulsions and reverse micellar solutions have been thoroughly investigated for the manufacture of nanomaterials [26][27][28]. Both techniques offer significant advantages, the first being that they are both fairly simple to produce in a general laboratory.…”

Section: Introductionmentioning

confidence: 99%

Fine-tuning of catalytic tin nanoparticles by the reverse micelle method for direct deposition of silicon nanowires by a plasma-enhanced chemical vapour technique

Poinern

Fawcett

2010

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractThe reverse micelle method was used for the reduction of a tin (Sn) salt solution to produce metallic Sn nanoparticles ranging from 85 nm to 140 nm in diameter. The reverse micellar system used in this process was hexane-butanol-cetyl trimethylammonium bromide (CTAB). The diameters of the Sn nanoparticles were proportional to the concentration of the aqueous Sn salt solution. Thus, the size of the Sn nanoparticles can easily be controlled, enabling a simple, reproducible mechanism for the growth of silicon nanowires, (SiNWs) using plasma-enhanced chemical vapour deposition (PECVD). Both the Sn nanoparticles and silicon nanowires were characterised using field-emission scanning electron microscopy (FE-SEM). Further characterisations of the SiNW's were made using transmission electron microscopy (TEM), atomic force microscopy, (AFM) and Raman spectroscopy. In addition, dynamic light scattering (DLS) was used to investigate particle size distributions. This procedure demonstrates an economical route for 2 manufacturing reproducible silicon nanowires using fine-tuned Sn nanoparticles for possible solar cell applications.

show abstract

Nanomaterials synthesis in switchable solvents

Gupta¹,

Tripathy²,

Aggarwal³

et al. 2022

Green Sustainable Process for Chemical and Environmental Engineering and Science

View full text Add to dashboard Cite

Reuse of surfactant/oil phase in nanoparticle synthesis using W/O microemulsions

Cited by 5 publications

References 11 publications

Effect of Reagent Addition Rate and Temperature on Synthesis of Gold Nanoparticles in Microemulsion Route

Effect of Reagent Addition Rate and Temperature on Synthesis of Gold Nanoparticles in Microemulsion Route

Fine-tuning of catalytic tin nanoparticles by the reverse micelle method for direct deposition of silicon nanowires by a plasma-enhanced chemical vapour technique

Nanomaterials synthesis in switchable solvents

Contact Info

Product

Resources

About