Changzhou Vocational Institute of Light Industry

Changzhou, China

Changzhou Vocational Institute of Light Industry

Changzhou, China
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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.


Zhang X.,Jiangsu University | Xu H.,Jiangsu University | Wang J.,Jiangsu University | Ye X.,Jiangsu University | And 4 more authors.
Nanoscale Research Letters | Year: 2016

In this paper, ultrathin WS2 nanosheets with thickness of about 5 nm were successfully prepared by a facile solid phase reaction method. The as-synthesized samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). On the basis of experimental results obtained under different reaction durations, a possible formation mechanism of WS2 nanosheets is proposed. The tribological performance of ultrathin WS2 nanosheets as additives in the 500SN base oil was tested by an UMT-2 ball-on-disc tribotester, and the worn surface of the steel disc was investigated by a non-contact optical profile testing instrument and SEM. The results showed that the friction coefficient and anti-wear property of base oil can be improved strikingly by adding ultrathin WS2 nanosheets. Especially, when the concentration of WS2 nanosheets was 1.0 wt.%, the corresponding lubricating oil exhibited the best tribological properties. Moreover, according to the investigation of the wear scar, an anti-friction and anti-wear mechanism is proposed. It is believed that the reduction of friction and wear must come from the addition of ultrathin WS2 nanosheets which can penetrate and enter the friction interface and form a continuous tribofilm on the rubbing face. © 2016, The Author(s).


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.


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.


Xie B.,Changzhou Vocational Institute of Light Industry | Liu L.,Utah State University | Zhang L.,Utah State University
ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE) | Year: 2015

Developing advanced energy absorption materials and structures is of both fundamental scientific interest and great technological importance. In this study, we investigate the energy absorption capability of a new composite material under impact loading by using ANSYS and LS-DYNA. This new composite is composed of polymeric matrix and Nanoporous Particle Suspended Liquid (NPSL) fillers. NPSL fillers are embedded in a polymeric matrix to form a composite protective layer on a rigid substrate. A numerical method based on the PLANE162 finite element scheme has been developed specifically to investigate the effects of the various material parameters on the energy absorption efficiency provided by the NPSL-based composite. Among these parameters, activation pressure is at the NPSL level, while filler diameter and spacing are at the composite level. All these parameters show pronounced effects on the mechanical properties of the composite, and they can be engineered by fine-tuning the processing techniques. Copyright © 2015 by ASME.


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.

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