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: 11 Jul 2018 *

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