Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 4, Issue 3, Pages 1404-1413Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.5b01407
Keywords
Three-dimensional graphene; Hydrogel; Aerogel; Tannic acid; Adsorption; Antibacterial capability
Categories
Funding
- National Natural Science Foundation of China [51573072]
- Enterprise-university-research prospective program Jiangsu Province [BY2013015-08]
- Fundamental Research Funds for the Central Universities [JUSRP 51305A]
- SAFEA [B13025]
- MOE
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In this paper, a green one-step strategy is developed to fabricate three-dimensional (3D) graphene-based multifunctional material with the aid of tannic acid. Tannic acid (TA), a typical plant polyphenol widely present in woods, reduced GO and induced the self-assembly of reduced graphene oxide into graphene hydrogel. The preparation process was carried out in aqueous media under atmosphere pressure without using any toxic reducing agent or special instrument, which is a facile, green, and low-cost method. The as-prepared monolithic 3D graphene exhibits high porosity, low density, hydrophobicity, good mechanical performance, and thermal stability. In addition, it shows excellent adsorption toward dyes, oils, and organic solvent, which should be a promising candidate for efficient adsorbents in water purification. Moreover, the tannic acid retained in the skeleton of 3D graphene functions as a biofunctional component, which endows the TA-GH with good antibacterial capability.
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