Issue 11, 2024

Bio-inspired interfacial chemistry for the fabrication of a robust and functional graphene oxide composite film

Abstract

A strong and functional artificial nacre film is developed by using polyethyleneimine-functionalized GO (PEI-GO) and pyrogallol (PG) inspired by insect exoskeleton sclerotization. PEI-GO is macroscopically assembled into the laminated films and then reacted with PG under the optimized condition for their efficient cross-linking through Schiff-base reactions. The internal structure and physicochemical properties of PG-treated PEI-GO (PG@PEI-GO) films are systematically explored with various analytical tools. The optimized PG@PEI-GO films exhibit excellent tensile strength, modulus, and toughness of 216.0 ± 12.9 MPa, 17.0 ± 1.1 GPa, and 2192 ± 538.5 kJ m−3 which are 2.7, 2.8, and 2.3-fold higher than those of GO films, respectively. Furthermore, silver nanoparticles (AgNPs) are densely immobilized on the PG@PEI-GO films harnessing their abundant amine groups, and the AgNPs immobilized PG@PEI-GO films exhibit a high catalytic activity in the conversion of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) with maintaining structural integrity. Based on the results, we demonstrate that the rational design of interfaces, inspired by natural materials, is an efficient approach to achieving strong and functional GO laminated composite films.

Graphical abstract: Bio-inspired interfacial chemistry for the fabrication of a robust and functional graphene oxide composite film

Supplementary files

Article information

Article type
Paper
Submitted
29 Dec 2023
Accepted
20 Feb 2024
First published
05 Mar 2024
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2024,14, 7676-7683

Bio-inspired interfacial chemistry for the fabrication of a robust and functional graphene oxide composite film

Y. Kwon, S. Cho, D. Min and Y. Kim, RSC Adv., 2024, 14, 7676 DOI: 10.1039/D3RA08932K

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