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Removal of chemical and microbial water pollutants by cold plasma combined with Ag/TiO₂-rGO nanoparticles.

ABSTRACT: This study aimed to investigate the synergistic effect of the cold atmospheric plasma (CAP) and heterogeneous photocatalytic processes in an aqueous solution to enhance water purification efficacy and reduce the energy cost required by CAP. 0.1% Ag/TiO₂-reduced graphene oxide (rGO) nanoparticles (NPs) photo-composite were prepared and fully characterized. Data showed that Ag nanoparticles and the rGO play an important role in increasing the efficiency of the whole treatment process and the photo-composite (0.1% Ag/TiO₂-1% rGO at 400 °C) revealed the highest phenol removal rate with excellent reusability. Also, complete inactivation (~ 5log₁₀ reduction) of both E. coli and S. aureus by NPs was observed without CAP exposure, whereas a minimal effect (0.1-0.5 log₁₀) on viruses (Adenovirus (AdV), rotavirus, and ɸX174) was observed after 10 min incubation. Interestingly, the photocatalytic virus inactivation test was promising, as it resulted in > 4.7log₁₀ reduction of AdV at 2 min treatment, whereas < 1log₁₀ could be reduced using only CAP at the same treatment time. Accordingly, we believe that this work could provide new insights into how the synergy between CAP and 0.1% Ag/TiO₂-1% rGO photo-composite in aqueous media imposes a great potential for environmental applications, such as water purification and microbial inactivation.

SUBMITTER: Abdel-Wahed MS

PROVIDER: S-EPMC9198087 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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Removal of chemical and microbial water pollutants by cold plasma combined with Ag/TiO<sub>2</sub>-rGO nanoparticles.

Abdel-Wahed Mahmoud S MS Hefny Mohamed Mokhtar MM Abd-Elmaksoud Sherif S El-Liethy Mohamed A MA Kamel Marwa A MA El-Kalliny Amer S AS Hamza Ibrahim Ahmed IA

Scientific reports 20220614 1

This study aimed to investigate the synergistic effect of the cold atmospheric plasma (CAP) and heterogeneous photocatalytic processes in an aqueous solution to enhance water purification efficacy and reduce the energy cost required by CAP. 0.1% Ag/TiO<sub>2</sub>-reduced graphene oxide (rGO) nanoparticles (NPs) photo-composite were prepared and fully characterized. Data showed that Ag nanoparticles and the rGO play an important role in increasing the efficiency of the whole treatment process an ...[more]

PMID: 35701491

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Removal of chemical and microbial water pollutants by cold plasma combined with Ag/TiO₂-rGO nanoparticles.

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Removal of chemical and microbial water pollutants by cold plasma combined with Ag/TiO<sub>2</sub>-rGO nanoparticles.

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Removal of chemical and microbial water pollutants by cold plasma combined with Ag/TiO2-rGO nanoparticles.

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Removal of chemical and microbial water pollutants by cold plasma combined with Ag/TiO<sub>2</sub>-rGO nanoparticles.

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OmicsDI is part of the ELIXIR infrastructure

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Removal of chemical and microbial water pollutants by cold plasma combined with Ag/TiO₂-rGO nanoparticles.