Harunar Rashid
Rajiv Gandhi University, Itanagar, Chemistry, Faculty Member
Research Interests:
Research Interests:
NiFe2O4 nanoparticles of well-controlled sizes have been synthesized for use as a catalyst in the selective oxidation of benzyl alcohol.
Research Interests:
An easy and convenient synthesis process is reported for the synthesis of CuO nanoparticles using plant extract for use as a catalyst in the aza-Michael addition reaction.
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
A faster and environmentally viable phytochemical assisted reduction method of synthesizing catalytically active gold nanoparticles (GNPs) is reported.
Research Interests:
ABSTRACTWe report an interesting property of carbon dots: they emit light under charge injection. We synthesized carbon dots in diameter about 20 nm using wet chemistry methods. The photoluminescence quantum efficiency of the carbon dots... more
ABSTRACTWe report an interesting property of carbon dots: they emit light under charge injection. We synthesized carbon dots in diameter about 20 nm using wet chemistry methods. The photoluminescence quantum efficiency of the carbon dots dissolved in water was about 11%. We observed strong electrogenerated chemiluminescence (ECL) from the sample. This observation of ECL from carbon dots indicates that they could be a good candidate material for carbon-based electroluminescent devices.
Research Interests:
The promise of nanotechnology becomes limitless with the possibility of having functionalized molecular agents to "illuminate" the reservoir and intervene to alter adverse oil recovery conditions. The future reality of the... more
The promise of nanotechnology becomes limitless with the possibility of having functionalized molecular agents to "illuminate" the reservoir and intervene to alter adverse oil recovery conditions. The future reality of the reservoir nanoagents concept is herein lab and field demonstrated with the industry first building block nanoagents' template. The template is intentionally geared towards the harsh but prolific Arab-D carbonate formation of the giant Ghawar field of Saudi Arabia. The challenge is magnified by a condition of 100 °C or greater temperature and 120,000 ppm or more connate water salinity. The industry's first proven reservoir nanoagents template is introduced and demonstrated via a push-pull field trial in an observation well. The testing objectives, processes, and results are outlined and further detailed in the paper.
Research Interests:
Research Interests:
ABSTRACT We report a simple method for shape-controlled synthesis of iron oxide spinels such as magnetite (Fe3O4) and maghemite (gamma-Fe2O3) nanostructures using a thermoresponsive polymer poly(vinyl methyl ether) (PVME) by the alkaline... more
ABSTRACT We report a simple method for shape-controlled synthesis of iron oxide spinels such as magnetite (Fe3O4) and maghemite (gamma-Fe2O3) nanostructures using a thermoresponsive polymer poly(vinyl methyl ether) (PVME) by the alkaline hydrolysis of iron salt at low temperature (20 degrees C). Microscopic analysis confirmed the formation of needle- and flower-shaped iron oxide nanostructures depending on reaction conditions. High-resolution transmission electron microscopic analysis of the needle- and flower-shaped nanostructures as well as their corresponding selected area electron diffraction patterns revealed that the formed nanostructures are crystalline in nature. X-ray diffraction study reveals the formation of well-crystalline pure Fe3O4 and gamma-Fe2O3 nanostructures under different reaction conditions. Fourier transform Infra-red spectroscopic analysis confirms the adsorption of PVME on the surface of iron oxide nanostructures. Finally, the magnetic properties of gamma-Fe2O3 and Fe3O4 nanostructures is studied that shows the superparamagnetic behavior of the formed iron oxide nanostructures.
Research Interests:
A simple and easier chemical method for preparing spongy gold nanocrystals has been developed on the basis of a modified-citrate reduction technique of the corresponding gold salt at 25 degrees C in the absence of template. These... more
A simple and easier chemical method for preparing spongy gold nanocrystals has been developed on the basis of a modified-citrate reduction technique of the corresponding gold salt at 25 degrees C in the absence of template. These nanocrystals possessed autocatalytic behavior and exhibited pronounced catalytic activity in the borohydride reduction of 4-nitrophenol due to their unique spongy morphology.