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This study focuses on the green synthesis of noble metal nanoparticles (silver (Ag) and platinum (Pt)) and how the size and shape of the nanoparticles produced can be controlled through changes in the initial pH value of the precursor solution. The nanoparticles were characterised by ultra-violet-visible spectroscopy, transmission electron microscopy and X-ray diffraction. This simple and environmentally...
A report is presented on the antibacterial activity of platinum and palladium nanoparticles (NPs) prepared by direct sputtering into glycerol. Prepared platinum faceted NPs (n = 500) with the diameter of (1.7 ± 0.3) nm and palladium faceted NPs (n = 500) with the diameter of (2.4 ± 0.4) nm were investigated. The size and shape of NPs were studied by transmission electron microscopy. Moreover, the...
Summary form only given. Platinum nanoparticles supported on carbon nanotubes are attracting much interest owning to their unique catalytic, hydrogen storage and electrical characteristics. There are many methods for the loading of platinum nanoparticles on carbon nanotubes includes dispersing a solution or suspension of solid support and reducing the metal atoms to activate the catalyst. Most popular...
This paper proposes a high surface area of reaction and three-phase zone electrode for micro direct methanol fuel cell (μDMFC) with nano structured carbon nanotubes (CNTs) and Nafion® for the utilization of catalysts. Dense and uniform growth of CNTs on the surface of Si plate can increase the reaction area by 2 orders of magnitude than plain Si plate. Pt nanoparticles deposited on CNTs by chemical...
Large-area silicon nanowire arrays are prepared successfully with mixed AgNO3 and HF solution by EMD method at normal temperature and pressure. It has been proved the best equality of silicon nanowires can be obtained at the concentration ratio of 0.02 mol/l: 5 mol/l for AgNO3 and HF and 1h reaction time. The influence of nano metal particles on the growth, the wire diameter, the distribution and...
In this paper, three dimensional calculations of the potential distribution inside previously fabricated non-volatile memory (NVM) devices consisting of platinum nanoparticles (NPs) embedded in the SiO2/HfO2 matrix were performed to examine whether the barrier for tunneling is seriously affected by the discharge of one electron from one of the metallic NPs. To do this, the Poisson equation inside...
In this work, electrical characteristics of two types MOS memory structures: one that contains platinum and one that contains gold nanoparticles, embedded between two dielectric layers, a thin "tunneling" SiO2 and a thicker HfO2 "control" layer has been compared. The nanoparticles are formed during simple electron-gun deposition of a very small quantity of platinum or gold, at...
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