scholarly journals Precise Vapor-Phase Synthesis of Two-Dimensional Atomic Single Crystals

iScience ◽  
2019 ◽  
Vol 20 ◽  
pp. 527-545 ◽  
Author(s):  
Shasha Zhao ◽  
Luyang Wang ◽  
Lei Fu
Keyword(s):  
Single Crystals ◽  
Vapor Phase ◽  
Two Dimensional ◽  
Phase Synthesis ◽  
Vapor Phase Synthesis

scholarly journals Vapor-Phase Synthesis and Magnetoresistance of (Cd0.993Zn0.007)3As2 Single Crystals

JETP Letters ◽  
2019 ◽  
Vol 109 (3) ◽  
pp. 175-179 ◽  
Author(s):  
A. V. Kochura ◽  
L. N. Oveshnikov ◽  
A. P. Kuzmenko ◽  
A. B. Davydov ◽  
S. Yu. Gavrilkin ◽  
...  
Keyword(s):  
Single Crystals ◽  
Vapor Phase ◽  
Phase Synthesis ◽  
Vapor Phase Synthesis

VAPOR-PHASE SYNTHESIS AND MAGNETORESISTANCE OF (CD1-XZNX)3AS2 (X = 0.007) SINGLE CRYSTALS

2019 ◽  
Vol 109 (3-4) ◽  
pp. 174-175
Author(s):  
A.V. KOCHURA ◽  
L.N. OVESHNIKOV ◽  
A.P. KUZMENKO ◽  
A.B. DAVYDOV ◽  
S.YU. GAVRILKIN ◽  
...  
Keyword(s):  
Single Crystals ◽  
Vapor Phase ◽  
Phase Synthesis ◽  
Vapor Phase Synthesis

scholarly journals α-MoO3 Crystals with a Multilayer Stack Structure Obtained by Annealing from a Lamellar MoS2/g-C3N4 Nanohybrid

Nanomaterials ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 559 ◽  
Author(s):  
Pablo Martín-Ramos ◽  
Ignacio Fernández-Coppel ◽  
Manuel Avella ◽  
Jesús Martín-Gil
Keyword(s):  
Optical Properties ◽  
Transition Metal ◽  
Metal Oxides ◽  
Vapor Phase ◽  
Transition Metal Oxides ◽  
Side Length ◽  
Layer By Layer ◽  
Two Dimensional ◽  
Phase Synthesis ◽  
Vapor Phase Synthesis

Transition metal oxides and chalcogenides have recently attracted great attention as the next generation of 2-D materials due to their unique electronic and optical properties. In this study, a new procedure for the obtaining of highly crystalline α-MoO3 is proposed as an alternative to vapor-phase synthesis. In this approach, a first reaction between molybdate, citrate and thiourea allowed to obtain MoS2, which—upon calcination at a temperature of 650 °C in the presence of g-C3N4—resulted in MoO3 with a definite plate-like shape. The colorless (or greenish) α-MoO3 nanoplates obtained with this procedure featured a multilayer stack structure, with a side-length of 1–2 μm and a thickness of several nanometers viewed along the [010] direction. The nucleation-growth of the crystal can be explained by a two-dimensional layer-by-layer mechanism favored by g-C3N4 lamellar template.

Novel two-step vapor-phase synthesis of UV–Vis light active Fe2O3/WO3 nanocomposites for phenol degradation

2016 ◽  
Vol 23 (20) ◽  
pp. 20350-20359 ◽  
Author(s):  
Davide Barreca ◽  
Giorgio Carraro ◽  
Alberto Gasparotto ◽  
Chiara Maccato ◽  
Cinzia Sada ◽  
...  
Keyword(s):  
Vapor Phase ◽  
Phenol Degradation ◽  
Phase Synthesis ◽  
Vapor Phase Synthesis

Vapor-Phase Synthesis and Surface Passivation of ZnSe Nanocrystals

2006 ◽  
Vol 8 (3-4) ◽  
pp. 533-542 ◽  
Author(s):  
Christos Sarigiannidis ◽  
Maria Koutsona ◽  
Athos Petrou ◽  
T.J. Mountziaris
Keyword(s):  
Vapor Phase ◽  
Surface Passivation ◽  
Phase Synthesis ◽  
Vapor Phase Synthesis ◽  
Znse Nanocrystals

Elemental vapor-phase synthesis of nanostructured zinc oxide

2009 ◽  
Vol 45 (11) ◽  
pp. 1246-1251 ◽  
Author(s):  
A. N. Red’kin ◽  
Z. I. Makovei ◽  
A. N. Gruzintsev ◽  
E. E. Yakimov ◽  
O. V. Kononenko ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Vapor Phase ◽  
Phase Synthesis ◽  
Nanostructured Zinc Oxide ◽  
Vapor Phase Synthesis

scholarly journals Vapor phase synthesis of glycerol carbonate over honeycomb monolith coated with zirconia based base catalysts

2018 ◽  
Vol 53 (1) ◽  
pp. 21-28
Author(s):  
VT Vasantha ◽  
SZ Mohamed Shamshuddin ◽  
M Shyamsundar ◽  
Reena Saritha Serrao ◽  
Joyce Queeny D’Souza
Keyword(s):  
Catalytic Activity ◽  
Vapor Phase ◽  
Glycerol Carbonate ◽  
Phase Synthesis ◽  
Base Catalysts ◽  
Catalytic Materials ◽  
Bed Temperature ◽  
Surface Basicity ◽  
Catalytic Material ◽  
Vapor Phase Synthesis

In this article the synthesis, characterization and catalytic activity studies of zirconia based base catalysts such as Mg(II)/ZrO2, Ca(II)/ZrO2 and Ba(II)/ZrO2 coated on honeycomb monoliths is reported. Honeycomb monoliths were coated with Mg(II)/ZrO2, Ca(II)/ZrO2, Ba(II)/ZrO2 and characterized for their physico-chemical properties such as surface basicity, crystallinity and morphology by using relevant techniques. The catalytic activity of these catalytic materials was evaluated in vapor phase synthesis of glycerol carbonate. The reaction conditions were optimized by varying reaction parameters such as nature of catalytic material, molar ratio of the reactants, catalyst bed temperature, feed-rate of the reactants and time-on-stream to obtain highest possible yield of glycerol carbonate with greater selectivity. The catalytic materials were found to be highly efficient in the synthesis of glycerol carbonate with a possible highest yield up to ~98%. These catalytic materials can be easily reactivated and reused in this reaction.Bangladesh J. Sci. Ind. Res.53(1), 21-28, 2018

scholarly journals Tuning Pt-CeO2 interactions by high-temperature vapor-phase synthesis for improved reducibility of lattice oxygen

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Xavier Isidro Pereira-Hernández ◽  
Andrew DeLaRiva ◽  
Valery Muravev ◽  
Deepak Kunwar ◽  
Haifeng Xiong ◽  
...  
Keyword(s):  
High Temperature ◽  
Co Oxidation ◽  
Vapor Phase ◽  
Ambient Pressure ◽  
Lattice Oxygen ◽  
Single Atom ◽  
Stable Form ◽  
Phase Synthesis ◽  
Vapor Phase Synthesis ◽  
High Temperature Vapor

Abstract In this work, we compare the CO oxidation performance of Pt single atom catalysts (SACs) prepared via two methods: (1) conventional wet chemical synthesis (strong electrostatic adsorption–SEA) with calcination at 350 °C in air; and (2) high temperature vapor phase synthesis (atom trapping–AT) with calcination in air at 800 °C leading to ionic Pt being trapped on the CeO2 in a thermally stable form. As-synthesized, both SACs are inactive for low temperature (<150 °C) CO oxidation. After treatment in CO at 275 °C, both catalysts show enhanced reactivity. Despite similar Pt metal particle size, the AT catalyst is significantly more active, with onset of CO oxidation near room temperature. A combination of near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) and CO temperature-programmed reduction (CO-TPR) shows that the high reactivity at low temperatures can be related to the improved reducibility of lattice oxygen on the CeO2 support.

Gas-phase synthesis of single crystals of Ge–Si system

2020 ◽  
Vol 34 (19) ◽  
pp. 2050178
Author(s):  
Aynur I. Hashimova
Keyword(s):  
Temperature Gradient ◽  
Single Crystals ◽  
Gas Phase ◽  
Vapor Phase ◽  
Solid Solutions ◽  
Closed Volume ◽  
Phase Synthesis ◽  
Polycrystalline Layer ◽  
Cold Zone ◽  
Hot Zone

In this study, the synthesis of single crystals of solid solutions Ge[Formula: see text]Si[Formula: see text] from the gas phase was performed in two different variants. Here, the vapor phase is created in a closed volume. A special ampoule has been made for this purpose. Ge–Si is placed near one end of the ampoule. A temperature gradient is created along the ampoule. The temperature of the hot zone was chosen to be [Formula: see text]C and the temperature of the cold zone to be [Formula: see text]C. It has been found that single crystals can form not only on the polycrystalline layer, but also from separate centers on the walls of the ampoule.

Vapor phase synthesis of fine particles

1997 ◽  
Vol 25 (5) ◽  
pp. 1008-1016 ◽  
Author(s):  
A.C. Da Cruz ◽  
R.J. Munz
Keyword(s):  
Vapor Phase ◽  
Fine Particles ◽  
Phase Synthesis ◽  
Vapor Phase Synthesis
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