Electro-conductive Nanocrystalline Cellulose Film Filled with TiO2-Reduced-Graphene Oxide Nanocomposite

摘要

cqvip:Imparting electro-conductive properties to nanocellulosebased products may render them suitable for applications in electronics,optoelectronics, and energy storage devices. In the present work, an electroconductive nanocrystalline cellulose(NCC) film filled with TiO2-reducedgraphene oxide(TiO2-RGO) was developed. Initially, graphene oxide(GO) was prepared using the modified Hummers method and thereafter photocatalytically reduced using TiO2 as a catalyst. Subsequently, an electro-conductive NCC film was prepared via vacuum filtration with the as-prepared TiO2-RGO nanocomposite as a functional filler. The TiO2-RGO nanocomposite and the NCC/TiO2-RGO film were systematically characterized. The results showed that the obtained TiO2-RGO nanocomposite exhibited reduced oxygen-containing group content and enhanced electroconductivity as compared with those of GO. Moreover, the NCC film filled with TiO2-RGO nanocomposite displayed an electro-conductivity of up to 9.3 S/m and improved mechanical properties compared with that of the control. This work could provide a route for producing electro-conductive NCC films, which may hold significant potential as transparent flexible substrates for future electronic device applications.