Preparation method of layer-by-layer self-assembled GQDs/3D-G/PANI composite film

• Main Authors: JIANG YANGYANG, CHEN YING, JIA QIANQIAN, WANG JIA, GUO XUDONG, GUO RUIBIN, MO ZUNLI
• Format: Patent
• Language: Chinese; English
• Published: 22.09.2020
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a preparation method of a layer-by-layer self-assembled GQDs/3D-G/PANI composite film, and belongs to the technical field of composite materials and electrocatalytic application. The preparation method comprises the following steps: firstly, preparing three-dimensional network-shaped graphene (3D-G) and graphene quantum dots (GQDs), and then preparing a GQDs/3D-G compositesystem on the surface of the 3D-G in a self-assembly manner by adopting GQDs; and finally, applying strong electrostatic force between an electropositive polyaniline (PANI) solution and an electronegative GQDs/3D-G composite dispersion solution and pi-pi interaction between benzene ring structures as driving force, constructing a GQDs/3D-G/PANI composite film which is self-assembled layer by layeron the surface of hydroxyl functionalized ITO, so that polyaniline can be firmly attached to the three-dimensional network-shaped graphene layer, graphene quantum dots assist in close contact betweenthe three-dimensional grap