نتایج جستجو برای: carbothermal
تعداد نتایج: 304 فیلتر نتایج به سال:
Single crystalline tin oxide (SnO2) nanowires have been synthesized by carbothermal reduction of SnO2 nanopowder followed by thermal evaporation of the reduced precursor and growth via the vapor-liquid-solid (VLS) growth mechanism. The nanowires are deposited on single crystalline TiO2 substrates of orientations of (100) and (110) that are coated with a thin film and colloids of gold (Au) catal...
sp(2)-Bonded boron nitride aerogels are synthesized from graphene aerogels via carbothermal reduction of boron oxide and simultaneous nitridation. The color and chemical composition of the original gel change dramatically, while structural features down to the nanometer scale are maintained, suggesting a direct conversion of the carbon lattice to boron nitride. Scanning and transmission electro...
The carbothermal synthesis of monometallic and bimetallic molybdenum carbide copper supported on high surface area graphite, has been studied at 600 700 °C characterised. catalysts were tested for CO2 hydrogenation to CH3OH.
Plasma milling results in more reactive sites and a larger contact area between WO3 nanoparticles C atoms, simultaneously generats oxygen vacancies defects on the surfaces of respectively via plasma discharge as describe article, number 2200175 by Zhongchen Lu co-workers. Thus, reaction temperature for carbothermal reduction reduces significantly milling.
In this research, solid state carbothermal synthesis of HfB2 Nano powders was investigated. For this purpose, HfO2,H3BO3, carbon active or phenolic resin were used as raw materials for carbothermal reaction. After 2-4 hours of milling the raw materials by a planetary ball in an ethanol media, the mixture was heat dried and pressed in to disks under pressure of 20-30 bar. The disks were then pla...
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