Title: Synthesis and characterisation of amine-grafted graphene oxide-TiO₂ crystal/plate composite and its crystal growth

Authors: Cun Chen; Jiajia Chen; Jing Gao; Guohua Li

Addresses: School of Chemical Engineering, Zhejiang University of Technology, China ' School of Chemical Engineering, Zhejiang University of Technology, China ' School of Chemical Engineering, Zhejiang University of Technology, China ' School of Chemical Engineering; State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China

Abstract: Owning to their extensive practical application, the controllable synthesis of well-faceted TiO₂ crystal with high percentage of reactive facets has attracted increasing attention. When adjusting the concentration of HF at 120 mM and 240 mM, anatase TiO₂ crystal and plate with exposed {001} facets had been fabricated on the amine-grafted graphene oxide (AGO) via a facile hydrothermal method. The influence of experiment conditions on the morphology of the final products was investigated in detail. The results showed that the morphology of TiO₂ crystal on AGO transforms cube-like structure into truncated tetragonal bipyramid structure when extending the reaction time, and the size of TiO₂ crystal were affected by the molar ratio of F/Ti. In addition, the dispersion of TiO₂ plate were improved by amino or oxygen-containing group on AGO sheet.

Keywords: TiO₂ crystal; TiO₂ plate; amine-grafted graphene oxide; AGO; crystal growth; nanotechnology.

DOI: 10.1504/IJNM.2018.093477

International Journal of Nanomanufacturing, 2018 Vol.14 No.3, pp.268 - 278

Received: 16 May 2017
Accepted: 26 Oct 2017
Published online: 26 Jul 2018 *

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