Abstract
Graphene oxide (GO) was deposited on a cotton fabric and then thermally reduced to reduced graphene oxide (rGO) with the assistance of L-ascorbic acid. The GO reduction imparted electrical conductivity to the fabric and allowed for electrochemical deposition of Ag° particles using cyclic voltammetry. Only the Ag°/rGO composite coating imparted antibacterial properties to the fabric against Escherichia coli and Staphylococcus aureus. Ag°/rGO-modified fibers were free of bacterial film, and bacterial growth inhibition zones around the material specimens were found. Moreover, Ag°/rGO-modified fabric became superhydrophobic with WCA of 161°.
Highlights
Electroconductive textiles draw increasing attention because of their numerous potential applications including sensors, solar cells, and supercapacitors [1,2,3,4]
The Ag◦ /reduced graphene oxide (rGO)-modified fabric became superhydrophobic with water contact angles (WCA) of 161◦, due to the presence of hydrophobic Ag◦ particles on the surface, causing the lotus effect
On the electroconductive rGO network, Ag◦ particles were electrochemically deposited with cyclic voltammetry, which enabled monitoring the redox reactions
Summary
Electroconductive textiles draw increasing attention because of their numerous potential applications including sensors, solar cells, and supercapacitors [1,2,3,4]. Electroconductivity can be achieved through coating of textiles with carbon nanoparticles, such as carbon nanotubes or graphene materials (GM), including graphene or reduced graphene oxide (rGO), which form conductive networks on fiber surfaces [3,5,6,7,8]. There is a growing demand for smart and intelligent garments, including cotton cloth, that are electroconductive and able to store energy or communicate In such applications, antimicrobial activity can eliminate microbial colonization and reduce the possibility of infection. Only a few articles described modification of cotton fabric through chemical reduction of GO and deposition of Ag [28,29,30] It improved hydrophobicity and electrical conductivity, but antibacterial activity was not reported. The composite Ag◦ /rGO coating imparted antibacterial activity to the fabric against the tested bacterial strains, Escherichia coli and Staphylococcus aureus, and superhydrophobicity
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