The phase composition, morphology and compressibility of graphene-zirconia composite nanostructured powder

E A Trusova; D D Titov; A N Kirichenko; E V Shelekhov; N S Trutnev; A M Afzal; I A Perezhogin

doi:10.1039/c9na00624a

The phase composition, morphology and compressibility of graphene-zirconia composite nanostructured powder

Nanoscale Adv. 2019 Dec 17;2(1):182-189. doi: 10.1039/c9na00624a. eCollection 2020 Jan 22.

Authors

E A Trusova¹, D D Titov¹, A N Kirichenko², E V Shelekhov³, N S Trutnev⁴, A M Afzal^{1

5}, I A Perezhogin^{2

6

7}

Affiliations

¹ Baikov Institute of Metallurgy and Materials Science RAS, 49 Leninsky pr. Moscow 119334 Russia trusova03@gmail.com.
² Technological Institute for Superhard and Novel Carbon Materials 7a Tsentralnaya street, Troitsk Moscow 142190 Russia.
³ National University of Science and Technology (MISiS) 4 Leninskiy pr. Moscow 119049 Russia.
⁴ Moscow Polytechnic University 38 Bol'shaya Semenovskaya street Moscow 107023 Russia.
⁵ Peoples' Friendship University of Russia 6 Miklukho-Maklaya str. Moscow 117198 Russia.
⁶ Lomonosov Moscow State University Leninskie Gory Moscow 119991 Russia.
⁷ Moscow Institute of Physics and Technology State University 9 Institutskiy Per., Dolgoprudny Moscow Region 141700 Russia.

Abstract

Nanostructured composite particles of nano- and submicron sizes were synthesized by a combination of sol-gel and sonochemical techniques. Their graphene content was 0.8-0.9 wt%. These layered particles consisted of graphene sheets in which zirconia nanocrystals were discretely incorporated. The synthesized powders were characterized using XRD, TEM, HRTEM, diffusion aerosol spectrometry and elemental analysis. A comparison of the compressibility modulus, limit values of linear section deformation and compressibility factor shows that the compressibility of the composite is difficult to achieve compared to that of pure zirconia, apparently, due to the low elasticity of graphene sheets.