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Graphene-Templated Synthesis of c-Axis Oriented Sb2Te3 Nanoplates by the Microwave-Assisted Solvothermal Method

Authors :
Swati Singh
Hyunjung Shin
Sung Wng Kim
Gi Duk Kwon
Jae-Yeol Hwang
Didier Pribat
Dongmok Lee
Seunghyun Hong
Wonjae Jeon
Seulky Lim
Seunghyun Baik
Source :
Chemistry of Materials. 27:2315-2321
Publication Year :
2015
Publisher :
American Chemical Society (ACS), 2015.

Abstract

The successful mechanical exfoliation and chemical synthesis of graphene has attracted considerable attention for the synthesis of other two-dimensional materials on graphene template. Chalcogenide materials such as Sb2Te3 are of interest due to the rhombohedral lattice structure with two-dimensional hexagonally closed-packed atomic layers along the c-axis. Here we synthesized c-axis-oriented Sb2Te3 nanoplates (NPs) on graphene substrates by the microwave-assisted solvothermal method. The microwave irradiation resulted in a higher temperature of graphene, compared with the synthesis solution, which was revealed by the single-mode microwave experiments and an analytical model based on energy balance and convective heat transfer. Besides, the lattice mismatch between c-axis-oriented Sb2Te3 and bridge sites of graphene was only 4%, which is also favorable for the graphene-templated Sb2Te3 synthesis. c-Axis-oriented single-crystalline Sb2Te3 NPs as large as 7 μm could be successfully synthesized on graphene w...

Details

ISSN :
15205002 and 08974756
Volume :
27
Database :
OpenAIRE
Journal :
Chemistry of Materials
Accession number :
edsair.doi...........451d2b7addd14d9c48f065ea9878df45
Full Text :
https://doi.org/10.1021/cm502749y