Results 201 to 210 of about 10,735 (250)

Photocatalytic nonoxidative coupling of methane on gallium oxide and silica-supported gallium oxide

Journal of Catalysis, 2008
Abstract Both unsupported and silica-supported gallium oxide were found to promote the nonoxidative coupling of methane (NOCM) to produce ethane and hydrogen upon photoirradiation at around room temperature. The unsupported gallium oxide demonstrated high methane conversion and high ethane selectivity in hydrocarbon products; however, the amount of ...
Hisao Yoshida, Leny Yuliati
exaly   +2 more sources

Synthesis of Gallium-Filled Gallium Oxide–Zinc Oxide Composite Coaxial Nanotubes

Advanced Materials, 2003
Ga2O3–ZnO composite coaxial nanotubes have been fabricated via a simple process combining thermal reaction and physical evaporation. The resulting nanotubes are either empty or partially or completely filled with Ga (see Figure), forming Ga (core)–Ga2O3 (interlayer)–ZnO (outer shell) three‐layer coaxial nanocables.
Yoshio Bando
exaly   +2 more sources

Gallium Oxide Films Prepared by Oxidation of Gallium in Oxygen-Hydrogen Plasma

2020 22nd International Conference on Transparent Optical Networks (ICTON), 2020
Nowadays, the oxide semiconductor materials research becomes one of the most challenging topics. We intend to develop a novel PECVD-based method for preparation of Ga 2 O 3 materials from elemental gallium as a precursor using plasma for initiation of the chemical interactions. In this work the oxygen-hydrogen gas mixture at different ratios O 2 /H 2
Leonid Mochalov, Alexander Logunov, Tatyana Sazanova, Daniela Gogova, Sergey Zelentsov, Pavel Yunin, Igor Prokhorov, Vladimir Malyshev, Vladimir Vorotyntsev   +8 more
openaire   +1 more source

Doping of gallium oxide and aluminum gallium oxide alloys

Oxide-based Materials and Devices XII, 2021
Ga2O3 is a highly promising material for power electronics, thanks to its large band gap (4.8 eV) and high breakdown voltage. Better control of doping is still an active research topic, both in Ga2O3 and in (AlxGa1-x)2O3 alloys. First-principles modeling, using advanced hybrid functional calculations within density functional theory, can greatly help ...
openaire   +1 more source

Gallium Nitride Nanotubes by the Conversion of Gallium Oxide Nanotubes

Angewandte Chemie International Edition, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Hu, Junqing, Bando, Yoshio, Golberg, Dmitri, Liu, Quanlin   +3 more
openaire   +3 more sources

Unconventional Gallium Oxide Nanowires

Small, 2005
AbstractZigzag and helical β‐Ga2O3 one‐dimensional nanostructures were produced by thermal evaporation of gallium oxide in the presence of gallium nitride. High‐resolution TEM analysis indicates that each individual zigzag nanostructure has a periodic arrangement of three distinct blocks: two structurally perfect blocks mirrored with respect to each ...
Zhan, Jinhua, Bando, Yoshio, Hu, Junqing, Xu, Fangfang, Golberg, Dmitri   +4 more
openaire   +3 more sources

Gallium oxide nanorods by the conversion of gallium oxide hydroxide nanorods

Journal of Alloys and Compounds, 2007
Abstract Single-crystalline gallium oxide hydroxide (α-GaOOH) nanorods could be successfully synthesized in large quantities through a hydrothermal synthetic method using gallium oxide as the gallium source and sodium azide and aqueous hydrazine as both alkaline and complexing reagent.
Xiaohe Liu, Guanzhou Qiu, Yan Zhao, Ning Zhang, Ran Yi   +4 more
openaire   +1 more source

Gallium Oxide Glasses

Nature, 1957
THE preparation and properties of some glasses based on the CaO—Al2O3 system have already been described by one of us1.
P. L. BAYNTON, H. RAWSON, J. E. STANWORTH   +2 more
openaire   +1 more source

Lanthanum, Gallium and their Impact on Oxidative Stress

Current Medicinal Chemistry, 2019
The role metals play in living organisms is well established and subject to extensive research. Some of them participate in electron-exchange reactions. Such reactions cause generation of free radicals that can adversely impact biological systems, as a result of oxidative stress.
Lozan, Todorov, Irena, Kostova, Maria, Traykova   +2 more
openaire   +2 more sources

Toward gallium oxide power electronics

Science, 2022
Ultrawide-bandgap semiconductors show promise for high-power ...
openaire   +2 more sources