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NEW RESEARCH : GRAPHENE MASK INACTIVATES CORONAVIRUSES UNDER SUNLIGHT

NEW RESEARCH : GRAPHENE MASK INACTIVATES CORONAVIRUSES UNDER SUNLIGHT

Context

Researchers have produced graphene masks with antibacterial properties.

Details

  • Researchers from the University of Hong Kong have produced graphene masks with an antibacterial efficiency of 80 percent, which can be raised to almost 100 percent with exposure to sunlight for 10 minutes.
  • Graphene is known for antibacterial properties.
  • The researchers created a laser-induced form of graphene and conducted a test on E coli., which showed antibacterial efficiency of about 82 percent. Most of the E coli were dead after 8 hours.
  • Also, Initial tests on two human coronavirus species showed the graphene inactivated over 90 percent of the virus in five minutes and almost 100 per cent in 10 minutes under sunlight.

About Graphene

  • It is an allotrope of carbon consisting of a single layer of atoms arranged in two-dimensional honeycomb lattice.
  • Each atom in a graphene sheet is connected to its three nearest neighbors by a σ-bond, and contributes one electron to a conduction band that extends over the whole sheet.

About Coronavirus

  • They are a group of related RNA viruses that cause diseases in mammals and birds.
  • In humans and birds, they cause respiratory tract infections that can range from mild to lethal.
  • Mild illnesses in humans include some cases of the common cold (which is also caused by other viruses, predominantly rhinoviruses), while more lethal varieties can cause SARS, MERS, and COVID-19.
  • In cows and pigs they cause diarrhea, while in mice they cause hepatitis and encephalomyelitis.

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