Nanocomposite Synthesis of Nanodiamond and Molybdenum Disulfide.

Youngjun Kim,Chang Kim,Dukhee Lee,Soo Kim,Eunah Kang

doi:10.3390/nano9070927

Abstract

A chemically conjugated nanodiamond (ND)/MoS2 nanocomposite was synthesized with amine-functionalized MoS2 and acyl chloride-coordinated ND. The chemical structure and morphology of the nanocomposite were characterized to examine the dispersion of MoS2 on the ND platform. The results revealed that the degree of dispersion was enhanced with increasing ratio of MoS2 nanosheets to ND. Moreover, the nanosheets consisted of several molecular interlayers that were well-dispersed on the ND platform, thereby forming a nanophase. The efficient electrocapacity of the ND/MoS2 nanocomposite was considerably greater than that of the MoS2 electrode alone. Furthermore, the nanophase distribution of MoS2 on ND with a graphitic shell provided a large surface area and reduced the diffusion distance of ions and electrons. Therefore, the nanophase electrode showed higher electrochemical capacitance than that of the MoS2 electrode alone.

Highlights

Numerous novel materials and composites including two-dimensional (2D) materials have been exploited with the aim of enhancing electrocapacity, which can be applied for biosensing platforms and electrocatalytic performance
The spectra obtained for the nanocomposites exhibited characteristics of both amide bond (NHCO) between the acyl chloride of ND and the functionalized MoS2 nanosheets was ND-COCl and the functionalized nanosheets
Amine-functionalized MoS2 nanosheets and NDCOCls were chemically reacted through surface contact, suggesting that the ND/MoS2 nanocomposite was successfully synthesized (Figure 5e–h)

Summary

Introduction

Numerous novel materials and composites including two-dimensional (2D) materials have been exploited with the aim of enhancing electrocapacity, which can be applied for biosensing platforms and electrocatalytic performance. A 2D layered material can be defined as an unsupported crystalline solid with molecular layer thickness characterized by intralayer storage for heat, charge, and light transport [1,2,3,4] This transport occurs in the presence of intralayer covalent bonds and intercalation-based interaction [5]. The porous structure of carbon materials is characterized by a multiscale nanocage and a high surface-to-volume ratio that provide electron transfer and electrocatalytic active sites. These advantages have often been applied to nanocomposites with metal to induce synergistic functional effects, including solar cells, batteries, and supercapacitors [16,17,18,19,20]. Nanodiamonds (NDs) among carbon platforms have received less attention than some of the other carbon materials due to theMeasurements high costs and low conductivity of these materials as electric functional

Cyclic

Nanocomposite Formation of MoS2 and Nanodiamonds

Findings

Conclusions