Synthesis and Characterization of Co-Mn (O) OH Nanosheets Assembled Structure Covered of Reduced Graphene Oxide Hybrid Structures by Hydrothermal Method

Abstract

In this study, we prepared cobalt-manganese (oxy) hydroxide nanosheets assembled structure covered of reduced graphene oxide hybrid structure (Co-Mn (O) OH NAS@ rGO HS) via reduction and hydroxylation of Mn1.5Co1.5[Co(CN)(6)](2)@ graphene oxide (GO). Obtained precursors were optimized at 15 mg GO, and these are hybrid structures in which nanocubes 200-400 nm in size were fully covered by multi-layered GO. The functional group (-COOH, -OH, C-O-C) of GO was removed through reduction by L-ascorbic acid. We obtained MnCOOH, Co(OH)(2), and Co-Mn LDH synthesized by hydroxylation of Mn1.5Co1.5[Co(CN)(6)](2)@ GO via ion exchange between the CN group and OH-. The hybrid nanostructure between transition-metal oxide/ hydroxide and reduced graphene oxide could be used in various fields, including lithium ion batteries, supercapacitors, and electrocatalyst for water splitting.