This paper reports results of a study regarding the activities of nano structure Mn/γ-Al2O3 and γ-Al2O3 catalysts for oxidation of 2-propanol (as a model of volatile organic compound). Nanostructure of catalysts was revealed using XRD, SEM and TEM techniques. Catalytic studies were carried out in U-shaped packed bed reactor under atmospheric pressure and at the reaction temperature of 150- 500°...

Alumina nanopowders produced by electrical explosion of wires were sintered using the spark plasma sintering technique. The results of XRD analysis show that the main phase in the compacted nanopowders is α-Al2O3. According to the SEM observations, the sintered alumina nanopowder consists of micron-sized faceted grains and nano-sized necked grains. The increase in sintering temperature resulted...

Synthesis of organic compounds using nano-catalysts is more and more attention due to the numerous advantages such as cost-effectiveness, high catalytic activity, ease of product separation, recovery of the catalyst, repeated recycling potential and good stability. In this work, TiCl2/nano-γ-Al2O3, as a novel type of green heterogeneous solid acid was prepared by the immobilization of TiCl2 on ...

Numerous problems occur during engine operation, such as start-up, lack of lubrication, and overheating, resulting in components’ wear, power loss, fuel consumption. Nanomaterials dispersed oil can play an important role improving the tribological properties lubricants. This study investigated influence multi-walled carbon nanotubes (MWCNTs) aluminum oxide nanoparticles (Al2O3 NPs) nano-additiv...

1. growth of high dielectric constant oxides on InGaAs and GaN using molecular beam epitaxy (MBE) and atomic layer deposition (ALD) 2. structural studies on hetero-structures of nano-thick Al2O3, HfO2, and Ga2O3(Gd2O3)/ InGaAs (and GaN) using high-resolution x-ray reflectivity using in-situ/ex-situ high-resolution synchrotron radiation and high-resolution transmission electron microscopy 3. cor...

Atmospheric pressure discharge plasma has been studied and applied to environmental purification in recent years. We have been trying to purify diesel exhaust gas and we have verified that the combination of discharge plasma and honeycomb catalyst is quite effective for the exhaust treatment. However, complicated setup of high voltage power supplies and electrodes is required to generate stable...

This work presents an application of thin aluminum oxide (Al2O3) films obtained using atomic layer deposition (ALD) for fine tuning the spectral response and refractive-index (RI) sensitivity of long-period gratings (LPGs) induced in optical fibers. The technique allows for an efficient and well controlled deposition at monolayer level (resolution ~ 0.12 nm) of excellent quality nano-films as r...

0.1016/j.nanoen.2 lsevier Ltd. All rig thor. [email protected] Abstract Organic electroactive materials derived from biomasses are promising candidates for next generation rechargeable batteries due to the low cost, sustainability and environmental benignity. Since organic materials have very low electronic conductivity, they are normally synthesized into nano-scale and mixed with conductive carbon...

Wet ball milling was used to exfoliate MoS2. The aim of the study was to examine how the surface energy of all the individual materials affected the formation of the nano‐ sheets. Two types of milling balls were selected: one made of steel and one made of Al2O3. The liquids used were water (H2O), isopropyl alcohol (C3H8O) and kerosene. The obtained nanosheets were identified and characterized u...