Journal
NANOMATERIALS
Volume 11, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/nano11030638
Keywords
COVID-19; virus elimination; antiviral surfaces; SiO2-Ag composite; ethyl vinyl acetate; surface plasmon resonance effect
Categories
Funding
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo-FAPESP (FAPESP CEPID) [2013/07296-2]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo-FAPESP (FAPESP/SHELL) [2017/11986-5]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo-FAPESP (PIPE) [15/50113-3, 11/51084-4]
- FINEP [03/2013, 0555/13]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico-CNPq [166281/2017-4]
- CAPES [001]
- Universitat Jaume I [UJI-B2019-30]
- Ministerio de Ciencia, Innovacion y Universidades (Spain) [PGC2018094417-B-I00]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [11/51084-4] Funding Source: FAPESP
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COVID-19 has caused global lockdowns, prompting efforts to develop effective treatments and innovative materials to prevent the spread of the virus. A highly virucidal material utilizing SiO2-Ag composite has shown significant antibacterial activity, offering promise in combating not only bacteria but also SARS-CoV-2.
COVID-19, as the cause of a global pandemic, has resulted in lockdowns all over the world since early 2020. Both theoretical and experimental efforts are being made to find an effective treatment to suppress the virus, constituting the forefront of current global safety concerns and a significant burden on global economies. The development of innovative materials able to prevent the transmission, spread, and entry of COVID-19 pathogens into the human body is currently in the spotlight. The synthesis of these materials is, therefore, gaining momentum, as methods providing nontoxic and environmentally friendly procedures are in high demand. Here, a highly virucidal material constructed from SiO2-Ag composite immobilized in a polymeric matrix (ethyl vinyl acetate) is presented. The experimental results indicated that the as-fabricated samples exhibited high antibacterial activity towards Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) as well as towards SARS-CoV-2. Based on the present results and radical scavenger experiments, we propose a possible mechanism to explain the enhancement of the biocidal activity. In the presence of O-2 and H2O, the plasmon-assisted surface mechanism is the major reaction channel generating reactive oxygen species (ROS). We believe that the present strategy based on the plasmonic effect would be a significant contribution to the design and preparation of efficient biocidal materials. This fundamental research is a precedent for the design and application of adequate technology to the next-generation of antiviral surfaces to combat SARS-CoV-2.
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