نتایج جستجو برای: nano platinum

تعداد نتایج: 71835  

2003
Yoshifumi Kimura Daisuke Abe Tsutomu Ohmori Masahiro Mizutani Masafumi Harada

Colloidal dispersions of platinum nano-particles have been synthesized by the reduction of platinum ion(IV) in the hightemperature and high-pressure water, ethanol, and water–ethanol mixtures in the presence of the protective polymer of poly(Nvinyl-2-pyrrolidone) (PVP). The syntheses have been tested at various temperatures (from 100 to 300 ◦C) and pressures (from 5 to 25 MPa). The diameter and...

Journal: :Electrochemistry communications 2017
Thomas E Winkler Robert Dietrich Eunkyoung Kim Hadar Ben-Yoav Deanna L Kelly Gregory F Payne Reza Ghodssi

We investigate gold, TiN, and platinum in combination with a chitosan-catechol-based redox-cycling system (RCS) for electrochemical detection of the antipsychotic clozapine. We have previously demonstrated the RCS for detection of clozapine in serum, but challenges remain regarding low signal-to-noise ratios. This can be mitigated by selection of electrode materials with beneficial surface morp...

Journal: :Angewandte Chemie 2023

Many chemical surface systems develop ordered nano-islands during repeated reaction and restoration. Platinum is used in electrochemical energy applications, like fuel cells electrolysers, although it scarce, expensive, degrades. During oxidation-reduction cycles, simulating device operation, nucleation growth of occurs that eventually enhances the dissolution. Preventing would be most effectiv...

Journal: :Nanomaterials 2021

Chemical vapor phase deposition was used to create hydrophobic nanostructured surfaces on glass slides. Subsequently, hydrophilic channels were created by sputtering a metal catalyst the while masking outside. The surface tension gradient between in and outside hydrophobicity formed open-channel system. reduction of para-nitrophenol (PNP) studied these devices. When compared nanostructure-free ...

Journal: :Journal of Engineering Science 2022

The paper is focused on electrochemical approaches for nanostructuring of semiconductor compounds with further applications in nano - microelectronic devices. A cost-effective technology nanowires and nanotubes obtaining by pulsed deposition presented. Functionalization elaborated nanostructures gold or platinum via electroplating improves the properties nanostructures. An optimization varicap ...

2017
Kamran Akbar Jung Hwa Kim Zonghoon Lee Minsoo Kim Yeonjin Yi Seung-Hyun Chun

Hydrazine fuel-cell technology holds great promise for clean energy, not only because of the greater energy density of hydrazine compared to hydrogen but also due to its safer handling owing to its liquid state. However, current technologies involve the use of precious metals (such as platinum) for hydrazine oxidation, which hinders the further application of hydrazine fuel-cell technologies. I...

Journal: :Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada 2002
Jeff Th M De Hosson Nicolai G Chechenin Daan-Hein Alsem Tomas Vystavel Bart J Kooi Antoni R Chezan Dik O Boerma

As a tribute to the scientific work of Professor Gareth Thomas in the field of structure-property relationships this paper delineates a new possibility of Lorentz transmission electron microscopy (LTEM) to study the magnetic properties of soft magnetic films. We show that in contrast to the traditional point of view, not only does the direction of the magnetization vector in nano-crystalline fi...

Journal: Journal of Nanoanalysis 2014
Ali Akbar Miran Beigi Amir Vahid Behzad Kalantri Hamid Shirkhanloo Hossein Ali Ghadirian Nasrin Shirkhanloo

On-line solid phase extraction (SPE) based on  nano adsorbent for pre-concentration of inorganic arsenic in water and waste water samples was developed prior to determine by hydride generation atomic absorption spectrometry (HG-AAS). By hydride generation simulation system (HGSS), the  inorganic arsenic in liquid samples changed to hydride form and pass through nano platinum multi wall carbon n...

2004
Sabrina Conoci Santo Di Bella Salvatore Petralia Salvatore Sortino

The current applications of electronic devices are converging towards a global interconnection along with portability and compactness. This scenario implies the development of electronic components more and more small, fast, energy efficient and smart as well. The microelectronics industry faces these needs by both scaling and adding novel functions in integrated circuits. By going on such a tr...

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