Jenish Patel
Case Western Reserve University
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Publication
Featured researches published by Jenish Patel.
Nanotechnology | 2013
Jenish Patel; L Němcová; Paul Maguire; W. G. Graham; Davide Mariotti
Plasma-induced non-equilibrium liquid chemistry is used to synthesize gold nanoparticles (AuNPs) without using any reducing or capping agents. The morphology and optical properties of the synthesized AuNPs are characterized by transmission electron microscopy (TEM) and ultraviolet-visible spectroscopy. Plasma processing parameters affect the particle shape and size and the rate of the AuNP synthesis process. Particles of different shapes (e.g. spherical, triangular, hexagonal, pentagonal, etc) are synthesized in aqueous solutions. In particular, the size of the AuNPs can be tuned from 5 nm to several hundred nanometres by varying the initial gold precursor (HAuCl4) concentration from 2.5 μM to 1 mM. In order to reveal details of the basic plasma-liquid interactions that lead to AuNP synthesis, we have measured the solution pH, conductivity and hydrogen peroxide (H2O2) concentration of the liquid after plasma processing, and conclude that H2O2 plays the role of the reducing agent which converts Au(+3) ions to Au(0) atoms, leading to nucleation growth of the AuNPs.
Scientific Reports | 2015
Yazi Liu; Dan Sun; Sadegh Askari; Jenish Patel; Manuel Macias-Montero; Somak Mitra; Richao Zhang; Wen-Feng Lin; Davide Mariotti; Paul Maguire
A facile method to synthesize a TiO2/PEDOT:PSS hybrid nanocomposite material in aqueous solution through direct current (DC) plasma processing at atmospheric pressure and room temperature has been demonstrated. The dispersion of the TiO2 nanoparticles is enhanced and TiO2/polymer hybrid nanoparticles with a distinct core shell structure have been obtained. Increased electrical conductivity was observed for the plasma treated TiO2/PEDOT:PSS nanocomposite. The improvement in nanocomposite properties is due to the enhanced dispersion and stability in liquid polymer of microplasma treated TiO2 nanoparticles. Both plasma induced surface charge and nanoparticle surface termination with specific plasma chemical species are proposed to provide an enhanced barrier to nanoparticle agglomeration and promote nanoparticle-polymer binding.
Scientific Reports | 2017
Richao Zhang; Dan Sun; Ruirui Zhang; Wen-Feng Lin; Manuel Macias-Montero; Jenish Patel; Sadegh Askari; Calum McDonald; Davide Mariotti; Paul Maguire
Conductive polymers have been increasingly used as fuel cell catalyst support due to their electrical conductivity, large surface areas and stability. The incorporation of metal nanoparticles into a polymer matrix can effectively increase the specific surface area of these materials and hence improve the catalytic efficiency. In this work, a nanoparticle loaded conductive polymer nanocomposite was obtained by a one-step synthesis approach based on room temperature direct current plasma-liquid interaction. Gold nanoparticles were directly synthesized from HAuCl4 precursor in poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). The resulting AuNPs/PEDOT:PSS nanocomposites were subsequently characterized under a practical alkaline direct ethanol fuel cell operation condition for its potential application as an electrocatalyst. Results show that AuNPs sizes within the PEDOT:PSS matrix are dependent on the plasma treatment time and precursor concentration, which in turn affect the nanocomposites electrical conductivity and their catalytic performance. Under certain synthesis conditions, unique nanoscale AuNPs/PEDOT:PSS core-shell structures could also be produced, indicating the interaction at the AuNPs/polymer interface. The enhanced catalytic activity shown by AuNPs/PEDOT:PSS has been attributed to the effective electron transfer and reactive species diffusion through the porous polymer network, as well as the synergistic interfacial interaction at the metal/polymer and metal/metal interfaces.
Plasma Processes and Polymers | 2012
Davide Mariotti; Jenish Patel; Vladimir Švrček; Paul Maguire
European Physical Journal-applied Physics | 2011
Joanne McKenna; Jenish Patel; Somak Mitra; Navneet Soin; Vladimir Švrček; Paul Maguire; Davide Mariotti
COST TD1208 3th Annual meeting “Electrical discharges with liquids for future applications,” , 13th-17th March 2016 | 2016
Dan Sun; Richao Zhang; Jenish Patel; Sadegh Askari; Manuel Macias Montero; Conor McDonald; Davide Mariotti; Paul Maguire
Bulletin of the American Physical Society | 2015
Paul Maguire; Yazi Liu; Sadegh Askari; Jenish Patel; Manuel Macia-Montero; Somak Mitra; Richao Zhang; Dan Sun; Davide Mariotti
20th International Conference on Composite Materials Copenhagen, 19-24th July 2015 | 2015
Dan Sun; Yazi Liu; Sadegh Askari; Jenish Patel; Manuel Macias-Montero; Somak Mitra; Richao Zhang; Davide Mariotti; Paul Maguire
2015 Global Conference on Polymer and Composite Materials (PCM 2015) | 2015
Dan Sun; Richao Zhang; Jenish Patel; Sadegh Askari; Manuel Macias Montero; Calum McDonald; Paul Josheph; Yazi Liu; Davide Mariotti; Paul Maguire
10th International Conference on Composite Science and Technology ICCST/10 | 2015
Dan Sun; Richao Zhang; Andrew Wylie; Matar Díaz Mira; Jenish Patel; Manuel Macias Montero; Sadegh Askari; Davide Mariotti; Paul Maguire
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National Institute of Advanced Industrial Science and Technology
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