Electronic Scientific Journal
 
Diagnostics, Resource and Mechanics 
         of materials and structures
Рус/Eng  

 

advanced search

IssuesAbout the JournalAuthorContactsNewsRegistration

2016 Issue 5

2021 Issue 3
 
2021 Issue 2
 
2021 Issue 1
 
2020 Issue 6
 
2020 Issue 5
 
2020 Issue 4
 
2020 Issue 3
 
2020 Issue 2
 
2020 Issue 1
 
2019 Issue 6
 
2019 Issue 5
 
2019 Issue 4
 
2019 Issue 3
 
2019 Issue 2
 
2019 Issue 1
 
2018 Issue 6
 
2018 Issue 5
 
2018 Issue 4
 
2018 Issue 3
 
2018 Issue 2
 
2018 Issue 1
 
2017 Issue 6
 
2017 Issue 5
 
2017 Issue 4
 
2017 Issue 3
 
2017 Issue 2
 
2017 Issue 1
 
2016 Issue 6
 
2016 Issue 5
 
2016 Issue 4
 
2016 Issue 3
 
2016 Issue 2
 
2016 Issue 1
 
2015 Issue 6
 
2015 Issue 5
 
2015 Issue 4
 
2015 Issue 3
 
2015 Issue 2
 
2015 Issue 1

 

 

 

 

 

V. B. Vykhodets, T. E. Kurennykh

SOLUBILITY OF DEUTERIUM IN ALUMINA NANOPOWDERS

The paper presents data on the effect of surface oxygen deficiency in nanoparticles on the catalytic properties of oxide nanopowders. Data on the interaction of nanopowders with gaseous hydrogen are the test modeling catalytic properties. Alumina nanopowders synthesized using laser evaporation of a ceramic target dissolve deuterium during their annealing in gaseous deuterium. It is only the surface atomic layer of nanoparticles with very large oxygen deficiency that has the ability to dissolve deuterium. Oxygen deficiency and deuterium solubility are adjustable properties of nanoparticles. They can be changed by annealing nanopowders in oxygen. Stoichiometric alumina virtually does not dissolve deuterium. A technological scheme is proposed for synthesizing oxide nanopowders with controllable surface oxygen deficiency, physical-chemical and functional properties.

Keywords: deuterium, alumina nanopowder, catalytic properties, oxygen nonstoichiometry, nuclear reaction analysis

Bibliography:

1. Vykhodets V.B., Jarvis E., Kurennykh T.E., Davletshin A.E., Obukhov S.I., Beketov I.V., Samatov O.M., Medvedev A.I. Extreme deviations from stoichiometry in alumina nanopowders. Surface Science, 2014, vol. 630, pp. 182–186. DOI: 10.1016/j.susc.2014.08.009.

2. Vykhodets V.B., Jarvis E., Kurennykh T.E., Beketov I.V., Obukhov S.I., Samatov O.M., Medvedev A.I., Davletshin A.E., Whyte T. Inhomogeneous depletion of oxygen ions in oxide nanoparticles. Surface Science, 2016, vol. 644, pp. 41–147. DOI: 10.1016/j.susc.2015.10.011.

3. Jarvis E.A.A., Carter E.A. Metallic Character of the Al2O3(0001)-( x)R ± 9° Surface Reconstruction. J. Phys. Chem B, 2001, vol. 105, iss. 18, pp. 4045-4052. DOI: 10.1021/jp003587c.

4. French T.M., Somorjai Gabor A. Composition and surface structure of the (0001) face of a-alumina by low-energy electron diffraction. J. Phys. Chem., 1970, vol. 74, no. 12, pp. 2489–2495.

5. Sundaresan A., Bhargavi R., Rangarajan N., Siddesh U., Rao C. N. R. Ferromagnetism as a universal feature of nanoparticles of the otherwise nonmagnetic oxides. Phys. Rev. B, 2006, vol. 74, iss. 16, pp. 161306(R). DOI: 10.1103/PhysRevB.74.161306.

6. Sudakar C., Kharel P., Suryanarayanan R., Thakurc J.S., Naikd V.M., Naika R., Lawes G. Room temperature ferromagnetism in vacuum-annealed TiO2 thin films. JMMM, 2008, vol. 320, iss. 5, pp. L31–L36. DOI: 10.1016/j.jmmm.2007.07.026.

7. Hong N., Sakai J., Poirot N., Brisé V. Room-temperature ferromagnetism observed in undoped semiconducting and insulating oxide thin films. Phys. Rev. B, 2006, vol. 73, iss. 13, pp. 132404. DOI: 10.1103/PhysRevB.73.132404.

8. Coey J.M.D. High-temperature ferromagnetism in dilute magnetic oxides. J. Appl. Phys., 2005, vol. 97, iss. 10, part 2, pp. 10D313. DOI: 10.1063/1.1849054.

9. Venkatesan M., Fitzgerald C.B., Coey J.M.D. Unexpected magnetism in a dielectric oxide. Nature, 2004, vol. 430, iss. 7000, pp. 630. DOI: 10.1038/430630a.

10. Dutta P., Seehra M.S., Zhang Y., Wender I. Nature of magnetism in copper-doped oxides: ZrO2, TiO2, MgO, SiO2, Al2O3, and ZnO. J. Appl. Phys., 2008, vol. 103, iss. 7, pp. 07D104. DOI: 10.1063/1.2830555/.

11. Coey J.M.D., Venkatesan M., Stamenov P., Fitzgerald C.B., Dorneles L.S. Magnetism in hafnium dioxide. Phys. Rev. B, 2005, vol. 72, iss. 2, pp. 024450. DOI: 10.1103/PhysRevB.72.024450.

12. Vykhodets V.B., Klotsman S.M, Levin A.D. Oxygen diffusion in alpha Titanium. 2. Calculation of concentrational profile of impurity by nuclear microanalysis. Fizika Metallov i Metallovedenie, 1987, vol.64, iss. 5, pp. 920–923.


PDF        

 

impact factor
RSCI 0.42

 

MRDMS 2021
Google Scholar


NLR

 

Founder:  Institute of Engineering Science, Russian Academy of Sciences (Ural Branch)
Chief Editor:  S.V. Smirnov
When citing, it is obligatory that you refer to the Journal. Reproduction in electronic or other periodicals without permission of the Editorial Board is prohibited. The materials published in the Journal may be used only for non-profit purposes.
Contacts  
 
Home E-mail 0+
 

ISSN 2410-9908 Registration SMI Эл № ФС77-57355 dated March 24, 2014 © IMACH of RAS (UB) 2014-2021, www.imach.uran.ru