Charged laser-induced graphene electrodes exhibit strong capacitance-based antibacterial and antiviral properties

Electrochemical inactivation of enteric viruses MS2, T4, and Phi6 using doped laser-induced graphene electrodes and filters

“…Using a low-cost CO 2 laser, LIG printed as layers has shown its potential as an antimicrobial surface and electrocatalyst for environmental applications. [26][27][28][29][30] In addition, LIG can be a promising alternative to conventional water disinfection technologies owing to its low production cost, higher efficiency, and feasibility for large-scale production. The capital cost for the fabrication of LIG is $1 per m 2 , which might be reduced during large-scale production by the implementation of the roll-to-roll fabrication method, indicating the feasibility for commercialization of LIG.…”

Recent advances and mechanism of antimicrobial efficacy of graphene-based materials: a review

“…aureus [ 91 ] GO – – [ 92 ] LIG – Virus: PhiX174, Herpes Simplex Virus 1; G + ve: S. aureus and G –ve: E . coli [ 93 ] Oxidative stress GO and rGO 0.025, 0. 05, 0.075, 0.1, 0.125, 0.15 µg/µL G − ve: P .…”

“…Nanocomposites of GO formed by Ag nanoparticles/phosphomolybdate/rGO using a one-pot hydrothermal procedure induce pores, leakage of cell components, and eventually loss of cell membrane integrity [ 113 ]. Recently, Beikzadeh and coworkers studied the antimicrobial mechanism of LIG electrodes and proved that the charged electrodes exhibit antibacterial as well as antiviral capability [ 93 ]. They demonstrated that the hydrogen peroxide (H 2 O 2 ) generation is not the main antibacterial mechanism and suggested that electroporation forms the principal disinfection mechanism, instead of higher capacitive electrodes.…”

From energy storage to pathogen eradication: unveiling the antibacterial and antiviral capacities of flexible solid-state carbon cloth supercapacitors

“…12,22,[26][27][28][29] It has been reported that nanomaterial surface modification based on charge (polarity and magnitude) shows a virucidal effect by disturbing the surface potential of viral particles and distorting the viral capsid via van der Waals and electrostatic interactions. 3,30,31 Applying an external low-voltage potential to different materials such as laser-induced graphene (LIG), 23,32,33 sulfur-doped LIG electrodes, 34 graphene-coated non-woven air filters, 35 Cu foam electrodes 36 and Co 3 O 4 nanowires 37 have been reported to kill bacteria and viruses. As an example, Ghatak, et al 1 have shown that a weak electric field (0.5 V) generated by an electroceutical fabric can disrupt the infectivity of coronavirus upon contact by destabilizing the electrokinetic properties of the virion.…”

“…2,37,39 Wang, et al 2 have developed carbon-doped titania nanotubes with tunable capacitance, which exhibited a sustained antibacterial effect after withdrawal of the power supply in a bacterial suspension. In our previous study, we developed laser-scribed graphene (LSG) electrodes that could be charged in a saline solution with a low constant potential of 1-2 V. 33 These capacitive electrodes have been shown to exhibit sustained antibacterial and antiviral properties after being unplugged from 10 minutes of charging in an aqueous electrolyte. Our research showed a direct relationship between the capacitance and the antibacterial and antiviral properties of the LSG electrodes.…”