scholarly journals Creating a Varistor Based on Zinc Oxide (ZnO) Powder Obtained by Plasma Dynamic Method

2017 ◽  
Vol 743 ◽  
pp. 95-98
Author(s):  
Kirill Firsov ◽  
Alexander Sivkov ◽  
Ivan Shanenkov ◽  
Iliyas Rakhmatullin ◽  
Alexander Ivashutenko ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Dynamic Method ◽  
Promising Material ◽  
Plasma Dynamic ◽  
Zno Powder

Zinc Oxide (ZnO) is a very promising material. This paper shows the results of the synthesis of hexagonal zinc oxide and its application.

scholarly journals Influence study of the plasma dynamic method energy parameters on the phase composition of the Al-Mg-O system products

2019 ◽  
Vol 1393 ◽  
pp. 012134
Author(s):  
A A Sivkov ◽  
A S Ivashutenko ◽  
I A Rakhmatullin ◽  
Yu L Shanenkova ◽  
A I Tsimmerman
Keyword(s):  
Phase Composition ◽  
Dynamic Method ◽  
Plasma Dynamic ◽  
Energy Parameters

scholarly journals Effect of Temperature and Particle Motion against the ability of ZnO Semiconductor Photocatalyst in Humic Acid

2018 ◽  
Author(s):  
Rahadian Zainul
Keyword(s):  
Zinc Oxide ◽  
Humic Acid ◽  
Particle Motion ◽  
Environmental Problems ◽  
Oxide Semiconductor ◽  
Effect Of Temperature ◽  
Optimum Conditions ◽  
Zno Powder ◽  
Zno Semiconductor ◽  
Semiconductor Photocatalyst

It has been studied to determine the effect of temperature and particles motion of zinc oxide semiconductor from commercial ZnO powder on phototransformation of humic acid, using B & L 20 Spectronics. This study was done under some optimum conditions: lighting time of 2 hours, using Hg lamp of low pressure ( λ = 254 nm), humic acid of 100 ppm and pH=9.2. it was disclosed that 97.51 % of humic acid transformed into minerals product. This research can contributed to solve the environmental problems in peat water.

On the Possibility of Obtaining Powder of Titanium Dioxide Synthesized by Plasma Dynamic Method

2021 ◽  
Vol 12 (4) ◽  
pp. 964-969
Author(s):  
A. A. Sivkov ◽  
Yu. N. Vympina ◽  
A. S. Ivashutenko ◽  
I. A. Rakhmatullin ◽  
Yu. L. Shanenkova ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Dynamic Method ◽  
Plasma Dynamic

Stability of Zinc Oxide Nanofluids Prepared with Aggregated Nanocrystalline Powders

2008 ◽  
Vol 8 (12) ◽  
pp. 6361-6366
Author(s):  
J. P. Leonard ◽  
S. J. Chung ◽  
I. Nettleship ◽  
Y. Soong ◽  
D. V. Martello ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Particle Size ◽  
Zinc Oxide ◽  
Brownian Motion ◽  
Preparation Method ◽  
Volume Fraction ◽  
High Volume ◽  
Nanocrystalline Powders ◽  
Zno Powder ◽  
20 Nm

Aqueous zinc oxide (ZnO) suspensions were prepared using a two-step preparation method in which an aggregated nanocrystalline ZnO powder was dispersed in water using a polyelectrolyte. The fluid showed anomalously high thermal conductivity when compared with the Maxwell and Hamilton-Crosser predictions. However, analysis of the particle size distribution showed that the fluid contained aggregated 20 nm crystallites of ZnO with a high volume fraction of particles larger than 100 nm. Sedimentation experiments revealed that particles settled out of the stationary fluid over times ranging from 0.1 hours to well over 10,000 hours. The size of the particles remaining in suspension agreed well with predictions made using Stoke's law, suggesting flocculation was not occurring in the fluids. Finally, a new concept of nanofluid stability is introduced based on the height of the fluid, sedimentation, Brownian motion and the kinetic energy of the particles.

Plasma dynamic synthesis and obtaining ultradispersed zinc oxide with single-crystalline particle structure

2016 ◽  
Vol 27 (4) ◽  
pp. 1506-1513 ◽  
Author(s):  
Alexander Sivkov ◽  
Alexander Ivashutenko ◽  
Yuliya Shanenkova ◽  
Ivan Shanenkov
Keyword(s):  
Zinc Oxide ◽  
Crystalline Particle ◽  
Particle Structure ◽  
Plasma Dynamic ◽  
Single Crystalline ◽  
Dynamic Synthesis

scholarly journals Investigation of ceramics based on Cu-Sn powder obtained by plasma dynamic method

2017 ◽  
Vol 830 ◽  
pp. 012087 ◽  
Author(s):  
Yu Shanenkova ◽  
A Sivkov ◽  
A Ivashutenko ◽  
A Tsimmerman
Keyword(s):  
Dynamic Method ◽  
Plasma Dynamic

scholarly journals Photocatalytic degradation of methylene blue dye solution using different amount of ZnO as a photocatalyst

2021 ◽  
Vol 15 (1) ◽  
pp. 1
Author(s):  
Hartini Ahmad Rafaie ◽  
Nur Fitrahana Mohd Yusop ◽  
Nurathira Faqihah Azmi ◽  
Nur Syakirah Abdullah ◽  
Nurul Infaza Talalah Ramli
Keyword(s):  
Methylene Blue ◽  
Zinc Oxide ◽  
Photocatalytic Degradation ◽  
Uv Light ◽  
Blue Dye ◽  
X Ray Diffraction ◽  
Pseudo First Order Reaction ◽  
Photodegradation Rate ◽  
Photocatalytic Activities ◽  
Zno Powder

Zinc oxide (ZnO) powder was used as a photocatalyst for the photocatalytic degradation of methylene blue (MB) dye solution. In this study, different amount of ZnO (10, 20 and 30 mg) as photocatalyst was used to investigate the performance of photocatalytic degradation of MB dye solution. The morphology and structural properties of ZnO powder were studied by X-ray diffraction (XRD) and Field Emission Scanning Electron Microscope (FESEM) techniques. The photocatalytic activities of the ZnO powder were investigated by degrading the MB dye solution under UV light irradiation at different amounts of ZnO photocatalyst. The percentage degradation of MB dye solution in the presence of 10 mg ZnO powder was found to be the highest at 96.2 % within 60 min irradiation compared to 20 and 30 mg of ZnO powder. The photodegradation rate constants, k obtained in this study were 0.0661, 0.0558, and 0.0507 min-1 for 10, 20, and 30 mg ZnO powder, respectively that follow the pseudo first-order reaction kinetics. Keywords: Methylene blue, photocatalytic degradation, photocatalyst, Zinc Oxide

Preparation of ZnO Powder from Clinker Digestion Solution of Zinc Oxide Ore

2014 ◽  
Vol 1004-1005 ◽  
pp. 665-669
Author(s):  
Hong Mei Shao ◽  
Xiao Yi Shen ◽  
Zhi Meng Wang ◽  
Yu Chun Zhai
Keyword(s):  
Thermal Decomposition ◽  
Zinc Oxide ◽  
Reaction Temperature ◽  
Narrow Range ◽  
Hexagonal Structure ◽  
Spherical Particles ◽  
Zinc Carbonate ◽  
Digestion Solution ◽  
Zno Powders ◽  
Zno Powder

The ZnO powder was successfully obtained by calcining the basic zinc carbonate, which was synthesized from clinker digestion solution of zinc oxide ore using analytical Na2CO3. The factors of mol ratio of Na2CO3to ZnSO4and reaction temperature were discussed at stirring intensity 400 rpm. Both the obtained basic zinc carbonate and ZnO powders were characterized using XRD, EDS and SEM. The thermal decomposition of basic zinc carbonate was also investigated below 600°C. The results show that the ZnO powder was wurzite hexagonal structure and the well-crystallized ZnO powder was uniformly spherical particles and distributed in a narrow range.

Magnetite hollow microspheres with a broad absorption bandwidth of 11.9 GHz: toward promising lightweight electromagnetic microwave absorption

2017 ◽  
Vol 19 (30) ◽  
pp. 19975-19983 ◽  
Author(s):  
Ivan Shanenkov ◽  
Alexander Sivkov ◽  
Alexander Ivashutenko ◽  
Viktor Zhuravlev ◽  
Qing Guo ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Microwave Absorption ◽  
Dynamic Method ◽  
Hollow Microspheres ◽  
Broad Absorption ◽  
Plasma Dynamic ◽  
Absorption Bandwidth ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption

The ferritic hollow microspheres with excellent electromagnetic wave absorption performances were successfully prepared by a fast, simple and scalable plasma dynamic method.

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