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Preparation of needle-like TiO2/Graphene for electrical conductive analysis

Authors :
Lin Liu
Li Ying
Shuyi Yang
Jianhua Qian
Tao E
Ma Zengying
Source :
Journal of Materials Science. 55:670-679
Publication Year :
2019
Publisher :
Springer Science and Business Media LLC, 2019.

Abstract

The needle-like TiO2 obtained by hydrothermal treatment combines with Graphene by adding cetyltrimethylammonium bromide (CTAB) as auxiliary dispersant. On this basis, the needle-like TiO2/Graphene composite conductive material was prepared which is increasing the compatibility of conductive Graphene. The growth mechanism of the needle-like TiO2/Graphene was discussed and supported by scanning electron microscopy, transmission electron microscopy and other test methods. Experimental results show that hydrothermal temperature has a great influence on the formation of needle-like TiO2. The quick electron transportation properties between TiO2 and Graphene make the TiO2/Graphene have excellent conductive ability. Needle-like TiO2 can facilitate electron transport on the layer of Graphene. The three-dimensional mesh structure formed by crisscross of needle-like TiO2 is attached to the Graphene surface by the auxiliary effect of CTAB, is forming a conductive network to increase the transmission rate of electrons, so that the TiO2/Graphene is endowed with good electrical conductivity. Finally, the resistivity of TiO2/Graphene is as low as 1.655 × 10−3 Ω m at 7 wt% Graphene, which conforms to the electrical conductive standard of the materials prepared by the factory.

Details

ISSN :
15734803 and 00222461
Volume :
55
Database :
OpenAIRE
Journal :
Journal of Materials Science
Accession number :
edsair.doi...........75b875e04874d8ed9c8c8a1f17331dc6