Synthesis and Characterization of Mn3O4-Graphene Nanocomposite thin Film by an ex situ Approach

Bulletin of the Korean chemical society

Myunggoo Kang¹  Jung Hun Kim¹  Hyun Jung¹  Woochul Yang¹ 

关键词: Graphene;    Manganese oxide;    Nanocomposite;    Aggregation;    p-doping;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

In this study, we report a new approach for Mn3O4-graphene nanocomposite by ex situ method. This nanocomposite shows two-dimensional aggregation of nanoparticle, and doping effect by decorated manganese oxide (Mn3O4), as well. The graphene film was made through micromechanical cleavage of graphite on the SiO2/Si wafer. Manganese oxide (Mn3O4) nanoparticle with uniform cubic shape and size (about 5.47 ± 0.61 nm sized) was synthesized through the thermal decomposition of manganese(II) acetate, in the presence of oleic acid and oleylamine. The nanocomposite was obtained by self-assembly of nanoparticles on graphene film, using hydrophobic interaction. After heat treatment, the decorated nanoparticles have island structure, with one-layer thickness by two-dimensional aggregations of particles, to minimize the surface potential of each particle. The doping effect of Mn3O4 nanoparticle was investigated with Raman spectra. Given the upshift in positions of G and 2D in raman peaks, we suggest that Mn3O4 nanoparticles induce p-doping of graphene film.

【 授权许可】

Unknown