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2 Research Items
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 nanopa...
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 o...
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 partic...
Plasma-induced non-equilibrium liquid chemistry (PiLC) offers enhanced opportunities over solution chemistry for developing new nanomaterials and tailoring their functional properties. Recent advances in the design and scientific understanding of microplasma devices operating at atmospheric pressure offer simple and effective routes to non-equilibr...
Interactions of microplasmas with solid, liquid and/or gas precursors provide new pathways for the synthesis and surface-engineering of nanomaterials. This study is focused on the plasma-induced non-euqilibrium liquid-chemistry (PiLC) as an effective approach to synthesize colloidal metal nanoparticles without using any reducing/capping agents. Hig...
Two different atmospheric pressure microplasma systems are discussed and used for the synthesis and surface engineering of a range of nanomaterials. Specifically a gas-phase approach from vaporized tetramethylsilane has been used to synthesize silicon carbide nanoparticles with diameters below 10 nm. A different microplasma system that interfaces w...
I am trying to calculate the ppm concentrations of water vapor introduced in the reactor via bubbling a carrier gas through a solution of water. So, I need to know the water vapor pressure at room temperature.
Thanks for your help.
Once the curve of [(alpha)E]^2 Vs E (for direct band-gap) is obtained, how to obtain a linear fit to get an intercept on X-axes, is there any specific method/equation? Can someone suggest an article, which explains in detail how to take the linear fit to obtain band-gap?
Are there any reports on that?
Although gold and silver are in same column in periodic table silver is more easily oxidized than gold.
From the reaction 2H2O → O2(g) + 4H+ + 4e− , how can I calculate the number of H+ ions if I am passing a current of 2.5 mA for 10 minutes?
What is the relation between pH and conductivity? Is there any mathematical formula that can be used to correlate both ? Is it possible to calculate pH from conductivity or vice-versa for water?
Distilled water is known to be acidic due to atmospheric CO2 absorption. how can one measure the degree of acidity in water due to CO2 absorption ? Distilled water in our labratory has pH ~ 5.8-6.4. How can I know that this change in pH is due to CO2 absorption ? Might I be measuring the concentration of HCO3- ion in water?
Are there any indicators that can be used to check the presence of nitric acid in liquid?
What may be the difference in the pH of distilled water and deionized water? Does deionized water have a greater pH value than distilled water?
Does the hydrogen free radical really exist? Is there any experimental evidence ? If yes, then what would be the atomic structure of the radica ?
I want to use the chemical that can scavange hydrated electrons. For example, if this scavanger is added to a solution containing various radicals such as H, OH, hydrated electron, hydrogen peroxide, etc. then the hydrated electron reaction with any other species/molecules present in the solution should be skipped by this scavanger.
Someone can please suggest.