Multi-walled carbon/IF-WS2 nanoparticles with improved thermal properties.
A unique new class of core-shell structured composite nanoparticles, C-coated inorganic fullerene-like WS2 (IF-WS2) hollow nanoparticles, has been created for the first time in large quantities, by a continuous chemical vapour deposition method using a rotary furnace. Transmission electron microscopy and Raman characterisations of the resulting samples reveal that the composite nanoparticles exhibited a uniform shell of carbon coating, ranging from 2-5 nm on the IF-WS2 core, with little or no agglomeration. Importantly, thermogravimetric analysis and differential scanning calorimetry analysis confirm that their thermal stability against oxidation in air has been improved by about 70 °C, compared to the pristine IF-WS2, making these new C-coated IF-WS2 nanoparticles more attractive for critical engineering applications.
College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, EX4 4QF, UK. y.zhu@exeter.ac.uk.
Fang
F
Xu
Trevor P
TP
Almeida
Hong
H
Chang
Yongde
Y
Xia
M Lesley
ML
Wears
Yanqiu
Y
Zhu