Virucidal, photocatalytic and chiromagnetic cobalt oxide quantum dots

Bronzato, Julia D.; Tofanello, Aryane; Oliveira, Martha Trindade; Bettini, Jefferson; Brito, Adrianne M. M.; Costa, Sérgio E. Gouvêa da; Lanfredi, Alexandre J. C.; Nascimento, Otaciro Rangel; Nantes, Iseli L.

doi:10.1016/j.apsusc.2021.151847

Cited by 9 publications

(6 citation statements)

References 73 publications

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“…This inorganic coating destroyed the virus protein structure through ROS chemical oxidation induced by TiO 2 assisted by doped Cu 2+ under photocatalysis. The ROS-producing strategy was further exploited by Bronzato, who incorporated Co 3 O 4 quantum dots into cotton fabric, for the preparation of sustainable personal protective clothes under the mechanism that Co II interstitial and oxygen vacancies provided virucidal activity. Kumar et al developed a MoS 2 -modified cotton fabric with a photothermal disinfection effect through a combination of surface-contact damage and oxidative stress, enabling cost-effective, reusable, and self-disinfectable properties: for example, a high surface temperature of 76.9 °C was obtained after 5 min of sunlight exposure for the MoS 2 -modified fabric (Figure b).…”

Section: Antiviral Textile Materialsmentioning

confidence: 99%

“… 135 This inorganic coating destroyed the virus protein structure through ROS chemical oxidation induced by TiO 2 assisted by doped Cu 2+ under photocatalysis. The ROS-producing strategy was further exploited by Bronzato, 136 who incorporated Co 3 O 4 quantum dots into cotton fabric, for the preparation of sustainable personal protective clothes under the mechanism that Co II interstitial and oxygen vacancies provided virucidal activity. Kumar et al.…”

Section: Antiviral Textile Materialsmentioning

confidence: 99%

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Functional Textile Materials for Blocking COVID-19 Transmission

Liu

Touhid

et al. 2023

ACS Nano

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The outbreak of COVID-19 provided a warning sign for society worldwide: that is, we urgently need to explore effective strategies for combating unpredictable viral pandemics. Protective textiles such as surgery masks have played an important role in the mitigation of the COVID-19 pandemic, while revealing serious challenges in terms of supply, cross-infection risk, and environmental pollution. In this context, textiles with an antivirus functionality have attracted increasing attention, and many innovative proposals with exciting commercial possibilities have been reported over the past three years. In this review, we illustrate the progress of textile filtration for pandemics and summarize the recent development of antiviral textiles for personal protective purposes by cataloging them into three classes: metal-based, carbon-based, and polymer-based materials. We focused on the preparation routes of emerging antiviral textiles, providing a forward-looking perspective on their opportunities and challenges, to evaluate their efficacy, scale up their manufacturing processes, and expand their high-volume applications. Based on this review, we conclude that ideal antiviral textiles are characterized by a high filtration efficiency, reliable antiviral effect, long storage life, and recyclability. The expected manufacturing processes should be economically feasible, scalable, and quickly responsive.

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Section: Antiviral Textile Materialsmentioning

confidence: 99%

Section: Antiviral Textile Materialsmentioning

confidence: 99%

Functional Textile Materials for Blocking COVID-19 Transmission

Liu

Touhid

et al. 2023

ACS Nano

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“…Reactive species generated by the absorption of light at specific wavelengths can provide a PDI effect with advantages superior to ordinary photosensitizers because they do not have the presence of heavy metals and are less toxic to the environment [ 120 ]. Bronzato et al [ 121 ] synthesized cobalt oxide QDs (Co 3 O 4 ) and soaked in 100% cotton fabrics to verify the virucide characteristic against human coronavirus 229E (HCoV-229E). The results indicated a reduction in viral load by 20 times; the authors indicate the use of QDs for the formulation of self-cleaning PPEs.…”

Section: Future Projections and Conclusionmentioning

confidence: 99%

Electrospinning in personal protective equipment for healthcare work

et al. 2023

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Protection in many service areas is mandatory for good performance in daily activities of workers, especially health areas. Personal protective equipment (PPE) is used to protect patients and health workers from contamination by harmful pathogens and body fluids during clinical attendance. The pandemic scenario caused by SARS-CoV-2 has shown that the world is not prepared to face global disease outbreaks, especially when it comes to the PPE of healthcare workers. In the last years, the world has faced a deficiency in the development of advanced technologies to produce high-quality PPE to attend to the exponential increasing demand. Electrospinning is a technology that can be used to produce high-quality PPE by improving the protective action of clothing. In the face of this concern, this manuscript presents as focus the potential of electrospinning to be applied in protective clothing. PPE mostly used by healthcare workers are also presented. The physico-chemical characteristics and production processes of medical textiles for PPE are addressed. Furthermore, an overview of the electrospinning technique is shown. It is important to highlight most research about electrospinning applied to PPE for health areas presents gaps and challenges; thus, future projections are also addressed in this manuscript.

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“…17,18 Among the nano-sensing systems, quantum dot (QD)-based uorescent probes have gained popularity due to their efficient small catalytic sizes which help to display low detection limits, fast response time, high specicity, [19][20][21] anti-pathogenic effects (e.g. virucidal 22 and bactericidal properties 23,111 ) and high inux membrane-based antifouling metal-doping effects. 24,110 Also, they exhibit optical properties such as high photoluminescence quantum yield (PLQY), photoluminescence (PL) spectra from the ultraviolet-visible to the near-infrared and high photostability, which make them ideal uorescence sensors 25 as well as photodegradation, and photodynamic therapeutic agents.…”

Section: Introductionmentioning

confidence: 99%