Optical and electrical properties of β-Ni (OH)₂/reduced graphene oxide nanocomposite

Abstract

Structural and optical properties of β-Ni(OH)2/reduced graphene oxide nanocomposite which was obtained by ultrasound dispersion of hydrothermally synthesized β-Ni(OH)2 and reduced graphene oxide were investigated. Frequency dependencies of conductivity for initial components and composite materials were studied. Specific surface areas of reduced graphene oxide, β-Ni(OH)2 and β-Ni(OH)2/reduced graphene oxide are 402, 20 and 88 m2/g, respectively. It was established that initial ultrafine β-Ni(OH)2 and β-Ni(OH)2/reduced graphene oxide composite have a percolation electrical conductivity. The enlarging of β-Ni(OH)2/reduced graphene oxide optical direct band gap energy compared to the initial components due to O/C contents changes was observed.