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Pan S.,Changzhou Vocational Institute of Light Industry | Pan S.,Nanjing University of Science and Technology
International Journal of Materials Research | Year: 2016

V(S2)2 nanobelts deposited on graphene sheets were synthesized via a simple method using thioacetamide, ammonium metavanadate, and graphene oxide. The properties of the obtained composites were investigated using powder Xray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The results revealed that graphene oxide not only acted as a raw material but also played the role of a support during V(S2)2 crystal growth. Meanwhile, the graphene oxide was simultaneously reduced to graphene during the deposition of the V(S2)2 nanobelts. Electrochemical data showed that the obtained V(S2)2/graphene had better capacitive properties and lower resistance than those of V(S2)2 alone. © Carl Hanser Verlag GmbH & Co. KG. Source


Zhang X.H.,Jiangsu University | Wang C.,Jiangsu University | Xue M.Q.,Changzhou Vocational Institute of Light Industry | Lin B.C.,Changzhou University | And 2 more authors.
Chalcogenide Letters | Year: 2016

Ultrathin MoS2 nanosheets at large scale were successfully synthesized by a facile hydrothermal solution reaction method, using hexaammonium heptamolybdate tetrahydrate ((NH4)6Mo7O24) and thiourea as the precursors. The final products were characterized by XRD, EDS, SEM and TEM. TEM and SEM images showed that the thickness of the obtained MoS2 nanosheets was ~4 nm and the lateral size of the sheets was in the range of 200-400 nm. The influence of reaction temperature and time on the formation of MoS2 nanosheets was discussed. A possible growth mechanism is proposed to explain the formation of MoS2 nanosheets on the basis of observations of a time-dependent morphology evolution process. © 2016, National Institute R and D of Materials Physics. All rights reserved. Source


Xue M.Q.,Changzhou Vocational Institute of Light Industry
Chalcogenide Letters | Year: 2016

Three kinds of MoSe2 nanostructures, 3D nanoflowers, hollow nanospheres and monodisperse solid nanospheres have been fabricated by a simple hydrothermal approach. The structure and morphology of these samples were characterized by X-ray powder diffraction (XRD), energy dispersive spectroscopy (EDS) and transmission electron microscopy (TEM). The electrochemical hydrogen storage behaviors of the as prepared MoSe2 nanostructure were also investigated. It is found that the morphology plays a key role in the hydrogen storage capacity of MoSe2 nanostructures. The as-derived MoSe2 hollow nanospheres exhibit excellent hydrogen storage capacity (118.2 mA h g-1) after 40 cycles than that of MoSe2 nanoflowers (94.3 mA h g-1), and monodisperse nanospheres (45.1 mA h g-1). The enhanced electrochemical performance of the 3D MoSe2 hollow nanospheres could be attributed to their hollow spherical structure, and their unique layered structure. © 2016, National Institute R and D of Materials Physics. All rights reserved. Source


Zhang X.H.,Jiangsu University | Xue M.Q.,Changzhou Vocational Institute of Light Industry | Huang Z.D.,Changzhou Vocational Institute of Light Industry | Wang Z.P.,Changzhou Vocational Institute of Light Industry | Yang F.,Changzhou Vocational Institute of Light Industry
Chalcogenide Letters | Year: 2015

The ZnSe nanoplates were synthesized by a facile and effective hydrothermal method. The morphology and structure of the ZnSe nanoplates were characterized by powder X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results indicated that ZnSe nanoplates with diameters of 200-300 nm and average thickness of 100 nm. The performance of the ZnSe nanoplates as a base oil additive was investigated by employing a UMT-2 ball-on-disc tribotester. Under the determinate conditions, the friction coefficient of the base oil containing 1.5wt% ZnSe nanoplates was lower than that of the base oil. The improved tribological properties of ZnSe as additives could be attributed to the stable tribofilm on the rubbing surface. © 2015 National Institute R and D of Materials Physics. All rights reserved. Source

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