Highly Conductive One-Dimensional Manganese Oxide Wires by Coating with Graphene Oxides

Abstract

Through coating with graphene oxides, we have developed a chemical route to the bulk production of long, thin manganese oxide (MnO2) nanowires that have high electrical conductivity. The average diameter of these hybrid nanowires is about 25 nm, and their average length is about 800 nm. The high electrical conductivity of these nanowires (ca. 189.51±4.51 µS) is ascribed to the homogeneous coating with conductive graphene oxides as well as the presence of non-bonding manganese atoms. The growth mechanism of the nanowires is theoretically supported by the initiation of morphological conversion from graphene oxide to wrapped structures through the formation of covalent bonds between manganese and oxygen atoms at the graphene oxide edge.

Evaluation and Optimization of Tour Method for Synthesis of Graphite Oxide with High Specific Surface Area

“…In Raman spectroscopy, a typical spectrum corresponding to pure graphite presents three characteristic bands: G-band at ~1580 cm −1 , D-band at ~354 cm −1 and 2D-band at ~2700 cm −1 [98]. The G band is the most intense and is associated with the graphite mode [99]. It appears due to the first order dispersion of the E 2 g 2 mode and is related to the number of sp 2 carbons.…”