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SiO2/LDPE nanocomposites can effectively decrease space charge accumulation at room temperature. However, space charge build up and suppress mechanism in nanocomposite are still not well understood. Experiments results showed that LDPE has a TSC peak around 60°C and the mechanical loss curve of LDPE which has a peak corresponding to the α-relaxation correspond well to the TSC peak. Space charge of...
We fabricated the composite of reduced graphene oxide (rGO) nanosheets and platinum nanoparticels (Pt NPs) using a pyrolysis spray coating method to investigate their electrocatalytic hydrogen evolution reaction (HER) performance. The atomic force microscopy was used to characterize surface morphology of rGO:Pt nanohybrids. Pt is mostly decorated on rGO nanosheets in form of NPs with diameter sizes...
This report describes an electrochemical biosensor for the detection of glucose. Iron oxide nanoparticles were prepared via co-precipitation method. Synthesized nanoparticles were dispersed in poly(vinyl alcohol) (PVA) solution to fabricate PVA-Fe3O4 nanocomposite. Glucose oxidase (GOx) was immobilized by physical adsorption in PVA-Fe3O4 nanocomposite for the construction of glucose biosensor. X-ray...
We have recently reported on the effect of silver nanoparticles plasma polymerized stack deposited on a polyethylene film preventing charge injection of both polarities under DC field. We investigate here the effects of the size and density of the silver nanograins on the barrier effect for charge injection. Size and density of the nanoparticles, and the surface coverage are controlled through the...
In order to investigate the effect of nano-MgO addition on grounded DC tree in cross-linked polyethylene (XLPE), comparative tree experiments were performed using XLPE and 0.5wt% MgO/XLPE nanocomposite by periodic prestress-grounding in a needle-plane system. And the space charge measurement based on pulsed electro-acoustic (PEA) method was performed on both kinds of samples as a complement. The tree...
The nanocomposite comprised of O-carboxymethyl chitosan (CMCS) and gold nanoparticles (AuNPs) is successfully prepared by in-situ synthesis method. The synthesized nanocomposite has been characterized by scanning electron microscopy images. The CMCS-AuNPs nanocomposite is first modified onto the glassy carbon electrode (GCE), then the surface carboxyl group is activated by N-hydroxysuccinimide and...
The zinc oxide (ZnO) nano particles of size 40 nm are synthesized by sol gel method used as filler in polyvinylidenefluorid (PVDF) to develop PVDF- ZnO nanocomposite. The thermally stimulated discharge current (TSDC), tangential loss and permittivity were observed in 204 m thick samples at different experimental conditions. The TSDC of all nanocomposite samples is characterized by single peak located...
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