Comparison of the effect of argon, hydrogen, and nitrogen gases on the reduced graphene oxide-hydroxyapatite nanocomposites characteristics

BMC Chemistry

Dang Quang Svend Le¹  Cody Eric Bünger¹  Reza Zolfaghari Emameh²  Hassan Nosrati³  Rasoul Sarraf-Mamoory³  Arman Karimi Behnagh⁴  Maria Canillas Perez⁵  Amir Aidun⁶ 

[1] Department of Clinical Medicine, Aarhus University;Department of Energy and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB);Department of Materials Engineering, Tarbiat Modares University;Faculty of Medicine, Iran University of Medical Science;Instituto de Cerámica Y Vidrio, CSIC;National Cell Bank of Iran, Pasteur Institute of Iran;

关键词: Argon;    Hydrogen;    Nitrogen;    Graphene;    Hydroxyapatite;    Nanocomposite;   

DOI  :  10.1186/s13065-020-00712-3

来源: DOAJ

【 摘 要 】

Abstract In this study, the effect of the argon, nitrogen, and hydrogen gases on the final properties of the reduced graphene oxide- hydroxyapatite nanocomposites synthesized by gas injected hydrothermal method was investigated. Four samples were synthesized, which in the first sample the pressure was controlled by volume change at a constant concentration. In subsequent samples, the pressure inside the autoclave was adjusted by the injecting gases. The initial pressure of the injected gases was 10 bar and the final pressure considered was 25 bar. The synthesized powders were consolidated at 950 °C and 2 MPa by spark plasma sintering method. The final samples were subjected to Vickers indentation analysis. The findings of this study indicate that the injection of argon, hydrogen, and nitrogen gases improved the mechanical properties of the nanocomposites. Injection of gases increased the crystallinity and particle size of hydroxyapatite, and this increase was greater for nitrogen gas than for others. Injection of these gases increased the rate of graphene oxide reduction and in this case the effect of nitrogen gas was greater than the others.

【 授权许可】

Unknown