Strong and Tough Nacre-Inspired Graphene Oxide Composite with Hierarchically Similar Structure

Hee Min Yang; Sunghwan Jo; Jun Ho Oh; Byoung Ho Choi; Ju Yeon Woo; Chang Soo Han

doi:10.1021/acsnano.2c01667

Strong and Tough Nacre-Inspired Graphene Oxide Composite with Hierarchically Similar Structure

Hee Min Yang, Sunghwan Jo, Jun Ho Oh, Byoung Ho Choi, Ju Yeon Woo, Chang Soo Han

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We report a graphene oxide (GO)-based composite, featuring GO/cross-linking agent (CA) nanoparticles, inspired by a nacre-like hierarchical structure present in nature. The as-prepared GO/CA composite was powdered to nanoscale particles and then mixed with pure GO to be GO/CA/GO (GCG) composite forming hierarchical GO/CA nanoasperities on the GO surface. The strength and toughness of the nacre-inspired GCG composite films were simultaneously improved by adjusting the nanoparticle concentration and hierarchical level of the GO-based films. Compared to pristine GO films and GO/CA composites, which exhibit a low level of hierarchy in their structures, the tensile strength and toughness of the GCG composites with higher hierarchy were enhanced 3.1 and 1.6 times and 47.6 and 10.9 times, respectively. Furthermore, a plausible mechanism of increasing mechanical properties based on nanoscale asperities and homogeneous interactions between GO and CA has been discussed.

Original language	English
Pages (from-to)	10509-10516
Number of pages	8
Journal	ACS nano
Volume	16
Issue number	7
DOIs	https://doi.org/10.1021/acsnano.2c01667
Publication status	Published - 2022 Jul 26

Keywords

composite
cross-linking agent
graphene oxide
hierarchical structure
mechanical properties

ASJC Scopus subject areas

Materials Science(all)
Engineering(all)
Physics and Astronomy(all)

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10.1021/acsnano.2c01667

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title = "Strong and Tough Nacre-Inspired Graphene Oxide Composite with Hierarchically Similar Structure",

abstract = "We report a graphene oxide (GO)-based composite, featuring GO/cross-linking agent (CA) nanoparticles, inspired by a nacre-like hierarchical structure present in nature. The as-prepared GO/CA composite was powdered to nanoscale particles and then mixed with pure GO to be GO/CA/GO (GCG) composite forming hierarchical GO/CA nanoasperities on the GO surface. The strength and toughness of the nacre-inspired GCG composite films were simultaneously improved by adjusting the nanoparticle concentration and hierarchical level of the GO-based films. Compared to pristine GO films and GO/CA composites, which exhibit a low level of hierarchy in their structures, the tensile strength and toughness of the GCG composites with higher hierarchy were enhanced 3.1 and 1.6 times and 47.6 and 10.9 times, respectively. Furthermore, a plausible mechanism of increasing mechanical properties based on nanoscale asperities and homogeneous interactions between GO and CA has been discussed.",

keywords = "composite, cross-linking agent, graphene oxide, hierarchical structure, mechanical properties",

author = "Yang, {Hee Min} and Sunghwan Jo and Oh, {Jun Ho} and Choi, {Byoung Ho} and Woo, {Ju Yeon} and Han, {Chang Soo}",

note = "Funding Information: This work was supported by Korea University and NRF of Korea (2021R1A2B5B03001811, 2021R1A2C1010039, 2022M3C1A3081178, and 2021R1A2C2012958). It is also noted that this work was supported by measurement of the KBSI SEM facility at Seoul in Korea. Publisher Copyright: {\textcopyright} 2022 American Chemical Society. All rights reserved.",

year = "2022",

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doi = "10.1021/acsnano.2c01667",

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AU - Yang, Hee Min

AU - Jo, Sunghwan

AU - Oh, Jun Ho

AU - Choi, Byoung Ho

AU - Woo, Ju Yeon

AU - Han, Chang Soo

N1 - Funding Information: This work was supported by Korea University and NRF of Korea (2021R1A2B5B03001811, 2021R1A2C1010039, 2022M3C1A3081178, and 2021R1A2C2012958). It is also noted that this work was supported by measurement of the KBSI SEM facility at Seoul in Korea. Publisher Copyright: © 2022 American Chemical Society. All rights reserved.

PY - 2022/7/26

Y1 - 2022/7/26

N2 - We report a graphene oxide (GO)-based composite, featuring GO/cross-linking agent (CA) nanoparticles, inspired by a nacre-like hierarchical structure present in nature. The as-prepared GO/CA composite was powdered to nanoscale particles and then mixed with pure GO to be GO/CA/GO (GCG) composite forming hierarchical GO/CA nanoasperities on the GO surface. The strength and toughness of the nacre-inspired GCG composite films were simultaneously improved by adjusting the nanoparticle concentration and hierarchical level of the GO-based films. Compared to pristine GO films and GO/CA composites, which exhibit a low level of hierarchy in their structures, the tensile strength and toughness of the GCG composites with higher hierarchy were enhanced 3.1 and 1.6 times and 47.6 and 10.9 times, respectively. Furthermore, a plausible mechanism of increasing mechanical properties based on nanoscale asperities and homogeneous interactions between GO and CA has been discussed.

AB - We report a graphene oxide (GO)-based composite, featuring GO/cross-linking agent (CA) nanoparticles, inspired by a nacre-like hierarchical structure present in nature. The as-prepared GO/CA composite was powdered to nanoscale particles and then mixed with pure GO to be GO/CA/GO (GCG) composite forming hierarchical GO/CA nanoasperities on the GO surface. The strength and toughness of the nacre-inspired GCG composite films were simultaneously improved by adjusting the nanoparticle concentration and hierarchical level of the GO-based films. Compared to pristine GO films and GO/CA composites, which exhibit a low level of hierarchy in their structures, the tensile strength and toughness of the GCG composites with higher hierarchy were enhanced 3.1 and 1.6 times and 47.6 and 10.9 times, respectively. Furthermore, a plausible mechanism of increasing mechanical properties based on nanoscale asperities and homogeneous interactions between GO and CA has been discussed.

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Strong and Tough Nacre-Inspired Graphene Oxide Composite with Hierarchically Similar Structure

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Keywords

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