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conferenceseries
.com
Volume 7, Issue 6 (Suppl)
J Nanomed Nanotechnol
ISSN: 2157-7439 JNMNT, an open access journal
Nanotek 2016
December 05-07, 2016
December 05-07, 2016 Phoenix, USA
13
th
International Conference on
Nanotek & Expo
J Nanomed Nanotechnol 2016, 7:6 (Suppl)
http://dx.doi.org/10.4172/2157-7439.C1.047Facile synthesis of SiO
2
@TiO
2
@Ag
2
O composite catalyst for degradation of RhB dye under UV and
visible light
Osman Ahmed Zelekew, Dong-Hau Kuo
Taiwan University of Science and Technology, Taiwan
H
erein, the thin layered n-type TiO
2
semiconductor is coated on SiO
2
spherical particles followed by decorating p-type Ag
2
O
nanoparticles outside with the purpose of p-n heterojunction formation for effective electron and hole separation. The composite
spherical particles abbreviated as SiO
2
@TiO
2
@Ag
2
O was characterized by XRD, SEM, TEM, HRTEM, and DRS techniques. The
catalytic performance was tested for degradation of RhB dye under UV and Visible light sources. The composite catalyst showed
an excellent RhB dye degradation. The combined n-type TiO
2
with the rich in electron inward and the p-type Ag
2
O with the rich in
hole outward facilitates the degradation reaction of dye. Therefore, n-type TiO
2
inside and p-type Ag
2
O outside on the surface of SiO
2
support can be used as a catalyst for effective degradation of organic dye.
Keywords:
p-n heterojunction, catalyst, degradation, nanoparticles, RhB dye.
osmax2007@gmail.comA coarse-grained molecular dynamics study on the mechanical properties of multi-layer graphene
Qingsheng Yang
Beijing University of Technology, China
G
raphene is the thinnest, hardest and toughest material known. Multi-Layer Graphene (MLG) and other graphene assemblies
are important aspects of graphene application for their outstanding properties. Coarse-grained molecular dynamics (CG-
MD) methods are developed to investigate the behavior of MLG and graphene assemblies due to the limitations of experimental
observations and full atom simulation. In this paper, the CG-MDmethod based on Tersoff potential is used to simulate MLG. Besides
the obvious reduction in calculation amount, only the coordinates of the model are needed in the process of computation, which
greatly reduces the time of modeling and makes it easier to build complicated models. The comparison between the results of full
atommodel and CG-MD model is made. It is proved that the CG-MD model can predict the behavior of MLG accurately. It has great
significance to produce graphene fiber with high performance.
qsyang@bjut.edu.cn