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Issue 49, 2020, Issue in Progress
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Agar-reduced graphene oxide selectively adsorbs organic dyes and strengthens double-network hydrogels

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Abstract

A straightforward and environmentally friendly method for synthesizing agar-reduced graphene oxide (ArGO) was devised. The topological features and emergent physical properties displayed by the novel carbon material were controlled by varying its water content. Dehydrated films of ArGO were found to be stable in water due to the π–π stacking interactions that formed between the aromatic components of its constituent sheets. In contrast, porous variants of ArGO afforded hydrogels that exhibited high swelling capacities. The intrinsic mechanical strength, elasticity and chemical stability of the hydrogels were further enhanced through adaption into double-network analogues. Such hydrogels, which were prepared using a facile and efficient one-pot methodology, exhibited a high fracture stress upon compression, and retained their shape in basic aqueous environments. These features can be expected to enable water purification and tissue engineering applications, among others.

Graphical abstract: Agar-reduced graphene oxide selectively adsorbs organic dyes and strengthens double-network hydrogels

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Supplementary files

Article information


Submitted
01 Jul 2020
Accepted
28 Jul 2020
First published
07 Aug 2020

This article is Open Access

RSC Adv., 2020,10, 29287-29295
Article type
Paper

Agar-reduced graphene oxide selectively adsorbs organic dyes and strengthens double-network hydrogels

T. Tang, K. Goossens, S. J. Lu, D. Meng and C. W. Bielawski, RSC Adv., 2020, 10, 29287
DOI: 10.1039/D0RA05735E

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