Photoelectrochemical oxidation assisted air purifiers; perspective as potential tools to control indoor SARS-CoV-2 Exposure

Kaushik, Ajeet; Dhau, Jaspreet S.

doi:10.1016/j.apsadv.2022.100236

Cited by 20 publications

(11 citation statements)

References 39 publications

(63 reference statements)

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“…In addition, after the so-called Honda-Fujishima effect for the water splitting using TiO 2 photocatalyst 8 , widely deployed from basic research to application technology development, focusing, and antibacterial/sterilization, self-cleaning, energy-saving air conditioning, and so on 14 – 16 . Various volatile organic compounds (VOCs) such as acetaldehyde, benzene and formaldehyde are considered as air toxins and known for their adverse effects on health, and the VOCs could be subject to disruption by an oxidation process, caused by TiO 2 photocatalyst 17 – 20 . In 2021, Xie et al demonstrated that intermediates accumulation was primarily responsible for the deactivation of the TiO 2 photocatalyst, which expected to overcome the fundamental issues to be addressed for photodegrading VOCs in practical applications caused by poor efficiency and stability of photocatalysts 18 .…”

Section: Introductionmentioning

confidence: 99%

Inactivation of SARS-CoV-2 and photocatalytic degradation by TiO2 photocatalyst coatings

Guan

Líu

et al. 2022

Sci Rep

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The novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causative agent of the COVID-19, which is a global pandemic, has infected more than 552 million people, and killed more than 6.3 million people. SARS-CoV-2 can be transmitted through airborne route in addition to direct contact and droplet modes, the development of disinfectants that can be applied in working spaces without evacuating people is urgently needed. TiO2 is well known with some features of the purification, antibacterial/sterilization, making it could be developed disinfectants that can be applied in working spaces without evacuating people. Facing the severe epidemic, we expect to fully expand the application of our proposed effective approach of mechanical coating technique (MCT), which can be prepared on a large-scale fabrication of an easy-to-use TiO2/Ti photocatalyst coating, with hope to curb the epidemic. The photocatalytic inactivation of SARS-CoV-2 and influenza virus, and the photocatalytic degradation of acetaldehyde (C2H4O) and formaldehyde (CH2O) has been investigated. XRD and SEM results show that anatase TiO2 successfully coats on the surface of Ti coatings, while the crystal structure of anatase TiO2 can be increased during the following oxidation in air. The catalytic activity towards methylene blue of TiO2/Ti coating balls has been significantly enhanced by the followed oxidation in air, showing a very satisfying photocatalytic degradation of C2H4O and CH2O. Notably, the TiO2/Ti photocatalyst coating balls demonstrate a significant antiviral activity, with a decrease rate of virus reached 99.96% for influenza virus and 99.99% for SARS-CoV-2.

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Section: Introductionmentioning

confidence: 99%

Inactivation of SARS-CoV-2 and photocatalytic degradation by TiO2 photocatalyst coatings

Guan

Líu

et al. 2022

Sci Rep

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“…SARS-CoV-2 transmits by respiratory droplets, aerosols, airborne, and particulate matter. Nano-enabled photoelectrochemical oxidation (PECO) assisted air purification is a good technological alternative [39] . Intelligent sensor systems combined with IoTs and AI techniques with 2D nanomaterials have transformed sensor applications in wearable electronics, healthcare, environment, safety, defense, and agriculture [40] , [41] , [42] , [43] , [44] , [45] , [46] , [47] .…”

Section: Covid-19 Detectionmentioning

confidence: 99%

Recent Advances in Biosensors for Detection of COVID-19 and Other Viruses

Patel

Surve

Parmar

et al. 2023

IEEE Rev. Biomed. Eng.

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This century has introduced very deadly, dangerous, and infectious diseases to humankind such as the influenza virus, Ebola virus, Zika virus, and the most infectious SARS-CoV-2 commonly known as COVID-19 and have caused epidemics and pandemics across the globe. For some of these diseases, proper medications, and vaccinations are missing and the early detection of these viruses will be critical to saving the patients. And even the vaccines are available for COVID-19, the new variants of COVID-19 such as Delta, and Omicron are spreading at large. The available virus detection techniques take a long time, are costly, and complex and some of them generates false negative or false positive that might cost patients their lives. The biosensor technique is one of the best qualified to address this difficult challenge. In this systematic review, we have summarized recent advancements in biosensor-based detection of these pandemic viruses including COVID-19. Biosensors are emerging as efficient and economical analytical diagnostic instruments for early-stage illness detection. They are highly suitable for applications related to

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“…As a result, higher-quality masks (N95 and nanoparticle-coated masks), appropriate circulation, and air puriers are required to avoid aerosol-transmitted infectious diseases. 64 3.1.4. Indoor airborne transmission.…”

Section: Major Transmission Modes Of Sars-cov-2mentioning

confidence: 99%

SARS-CoV-2 airborne transmission: a review of risk factors and possible preventative measures using air purifiers

Sheraz

Mir

Anus

et al. 2022

Environ. Sci.: Processes Impacts

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Photoelectrochemical oxidation assisted air purifiers; perspective as potential tools to control indoor SARS-CoV-2 Exposure

Cited by 20 publications

References 39 publications

Inactivation of SARS-CoV-2 and photocatalytic degradation by TiO2 photocatalyst coatings

Inactivation of SARS-CoV-2 and photocatalytic degradation by TiO2 photocatalyst coatings

Recent Advances in Biosensors for Detection of COVID-19 and Other Viruses

SARS-CoV-2 airborne transmission: a review of risk factors and possible preventative measures using air purifiers

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