نتایج جستجو برای: nano γ al2o3

تعداد نتایج: 135869  

2015
Chao Luo Jingjing Wang Xiulin Fan Yujie Zhu Fudong Han Liumin Suo Chunsheng Wang

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...

2014
Exfoliated MoS Elżbieta Jezierska

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...

Journal: :Chemical Industry & Chemical Engineering Quarterly 2023

In the present paper, a gamma alumina (?-Al2O3) loaded zinc oxide (ZnO) nano-catalyst (ZnO/?-Al2O3) has been synthesized and used to accelerate removal of sulfur compounds from light gas oil by oxidative desulfurization (ODS) process. The nano-catalysts have characterized atomic force microscopy (AFM) Brunauer-Emmett-Teller (BET). ODS process conducted in batch reactor at various reaction tempe...

Journal: :Sensors and Actuators A-physical 2021

Semiconducting metal oxide - based gas sensors exhibit outstanding sensitivity, although humidity in the analyte typically hampers precise measurements. In this work it was shown that a 5?6 nm thin Al2O3 nano-layer is particularly beneficial reducing interference due to of p-type conductivity copper oxide-based sensors. An effective approach from chemical solutions at 75 °C and thermal annealin...

Journal: :international journal of environmental research 2015
m. asztemborska r. steborowski j. kowalska g. bystrzejewska-piotrowska

accumulation of aluminium by plants exposed to nano- and microsized particles of al2o3 wasinvestigated in terms of risk assessment and possible application in phytoremediation of contaminated sites.four plant species (allium cepa l., zea mays, lepidium sativum and kalanchoe daigremontiana)were cultivatedon media (soil or liquid medium) contaminated with nano- and microparticles of al2o3. bioava...

Journal: :Journal of The European Ceramic Society 2021

This work presents a fast and direct controlled routine for the fabrication of fully dense alumina based on reactive spark plasma sintering (reactive-SPS) boehmite (γ-AlOOH) nano-powders obtained by sol–gel technique. The evolution transition aluminas during has been studied. Some powders were seeded with α-Al2O3 particles prior to gelation. Boehmite exhibited at 1070 °C, enhancing transformati...

Journal: :ACS Catalysis 2021

Obtaining an atomic-scale description of the chemical interactions phosphates with oxide support, such as γ-Al2O3, is essential to get a rational understanding role phosphate additives for great number heterogeneous catalysts, well improve use this element. Combining cutting-edge Dynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy (DNP SENS) techniques Density Functional Theory (DFT)...

2007
I. Brunets A. Boogaard J. Schmitz

In this work, the low-temperature process steps required for the realization of nano-crystal non-volatile memory cells are discussed. An amorphous silicon film, crystallized using a diode pumped solid state green laser irradiating at 532 nm, is proposed as an active layer. The deposition of the subsequent functional layers (e.g., gate oxide) can be done using CVD and ALD reactors in a cluster t...

2000
Chung-Hsin Wu Shang-Lien Lo Cheng-Fang Lin Chao-Yin Kuo

Modeling Competitive Adsorption of Molybdate, Sulfate, and Selenate on γ -Al2O3 by the Triple-Layer Model Chung-Hsin Wu,∗ Shang-Lien Lo,∗ Cheng-Fang Lin,∗ and Chao-Yin Kuo†,1 ∗Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Road, Taipei, 106, Taiwan; and †Institute and Department of Labor Relations, Chinese Culture University, 55 Hwa Kong Road, Shih-Lin...

Journal: : 2022

The methods of thermal analysis – thermogravimetry, differential were used to study the catalytic system phosphor-molybdenum heteropoly acid–aluminum oxide. It is shown that modification aluminum oxide has a direct effect on state acid. On surface ƞ-Al2O3, phosphomolybdic acid destroyed by interaction with strong Lewis’s sites carrier, while γ-Al2O3 it retains individuality, probably due multi...

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