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

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.