نتایج جستجو برای: platinum nanoparticle

تعداد نتایج: 51975  

Journal: :Microporous and Mesoporous Materials 2021

A mesostructured cellular foam (MCF) silica was applied to support gold (Au) – platinum (Pt) alloy nanoparticles (NPs) for benzyl alcohol partial oxidation. catalytic synergy on bimetallic (Au)-platinum nanoparticle (NP) catalyst, referring that introducing Au Pt leading a higher performance has been observed. However, the essence of this synergistic effect is still under debate. In work, serie...

Journal: :Medical physics 2017
Anne-Catherine Heuskin Bernard Gallez Olivier Feron Philippe Martinive Carine Michiels Stéphane Lucas

PURPOSE To identify which physical properties of nanoparticles are correlated with the survival fraction of cells exposed in vitro to low-energy protons in combination with nanoparticles. METHODS The Geant4 simulation toolkit (version 10.3) was used to model nanoparticles of different sizes (5-50 nm) and materials (Ti, Zr, Hf, Ta, Au, Pt), with or without an organic capping ensuring biocompat...

Journal: :Physical chemistry chemical physics : PCCP 2010
Frédéric Hasché Mehtap Oezaslan Peter Strasser

Understanding and improving durability of fuel cell catalysts are currently one of the major goals in fuel cell research. Here, we present a comparative stability study of multi walled carbon nanotube (MWCNT) and conventional carbon supported platinum nanoparticle electrocatalysts for the oxygen reduction reaction (ORR). The aim of this study was to obtain insight into the mechanisms controllin...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Nagesh Kolishetti Shanta Dhar Pedro M Valencia Lucy Q Lin Rohit Karnik Stephen J Lippard Robert Langer Omid C Farokhzad

The genomic revolution has identified therapeutic targets for a plethora of diseases, creating a need to develop robust technologies for combination drug therapy. In the present work, we describe a self-assembled polymeric nanoparticle (NP) platform to target and control precisely the codelivery of drugs with varying physicochemical properties to cancer cells. As proof of concept, we codelivere...

2013
Ke Liu Xiongwu Kang Zhi-You Zhou Yang Song Lyman J. Lee Daniel Tian Shaowei Chen

Stable platinum nanoparticles were prepared by the self assembly of acetylene derivatives (1-alkynes, 4-ethylphenylacetylene, and 4-tert-butylphenylacetylene) onto bare Pt colloid surfaces. Transmission electron microscopic measurements showed that the nanoparticles exhibited an average core size of 2.85 ± 0.62 nm. FTIR study showed that with the acetylene ligands adsorbed onto the Pt nanoparti...

2016
R Ahmad G Royle A Lourenço M Schwarz F Fracchiolla K Ricketts

High-Z nano materials have been previously shown to increase the amount of dose deposition within the tumour due to an increase in secondary electrons. This study evaluates the effects of high-Z nano materials in combination with protons, and the impact of proton energy, nanoparticle material and concentration. These effects were studied in silico through Monte Carlo simulation and experimental...

Journal: :IOP conference series 2023

Abstract In this work, the titanium dioxide (TiO 2 ) nanoparticle films were prepared from commercial Degussa P25-TiO nanoparticles by air-compressed spray. The properties of characterized X-ray diffraction, FTIR, Raman spectroscopy, and scanning electron microscope, respectively. addition, TiO film on a metal substrate (stainless steel, SS304) was used to fabricate electrode electrochemical su...

Journal: :Chemcatchem 2023

RuNPs stabilised by amino-decorated imidazolium-based polymer immobilized ionic liquids catalyse the dimethylamine borane mediated reduction of quinolines to 1,2-dihydroquinoline (DHQ) and 1,2,3,4-tetrahydroquinoline (THQ). Partial 3-substituted corresponding was achieved with 100% selectivity in toluene under mild conditions. This is first report selective partial 1,2-dihydroquinolines a heter...

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