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Thread: Titanium Oxide - Self cleaning pathogen free surfaces(Photocatalysis) |
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Thread Status: Active Total posts in this thread: 3
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
In 1967 a japanese professor discovered that Titanium Oxide surfaces destroy bacteria. In Japan this has led to the use of some tiles and surfaces coated with titanium oxide to destroy pathogens in hospital settings. This technology is already being used in some air purfication systems. It has been looked at for a way to create self sterilized medical instruments. It has also been looked at for a way to kill cancers. Washable suits have also been developed which can kill pathogens on contact and remain sterile.
http://web-japan.org/trends/science/sci040319.html Light and or near UV light can induce electrical currents on the surface of Titanium Dioxide doped coatings. This process is known as "Photocatalysis." It has great potential use in hospitals/labs where surfaces and instruments must/should be bacteria, virus free. http://en.wikipedia.org/wiki/Photocatalysis http://cat.inist.fr/?aModele=afficheN&cpsidt=18687068 The little grey men(planetary life - scientific observers) have already discovered and made good use of photocatalysis suits for protection against foriegn pathogens. Most of the entire inside structure of their time travel - space ships are coated with titanium oxide/dioxide coatings to keep the environment sterile and prevent bacteria/viral outbreaks. In the medical abduction room they use near Ultraviolet lighting on their ships which interact with the metal titanium dioxide doped coatings killing any possible foriegn virus/bacteria which land on the surface. Special black bug eyed lenses along with silver color suits are worn over their eyes for protection against this light. Okay, I just stated the above paragraph for entertainment purposes only! But, it's a far reaching interesting concept I think. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Titanium dioxide photocatalytic inactivation of prions
Journal of General Virology http://vir.sgmjournals.org/cgi/content/full/87/10/3125 "Prions are postulated to be the infectious agents of a family of transmissible, fatal, neurodegenerative disorders affecting both humans and animals. The possibility of prion transmission constitutes a public-health risk that confronts regulatory authorities everywhere. The main problem in handling prions is the fact that they are extremely resistant to standard decontamination methods. Thus, the use of harsh and expensive practices to destroy prions is inevitable. The development of applicable and efficient prion-inactivation practices is still highly important for the prevention of accidental transmission. In the search for effective and environmentally friendly methods to eliminate organic compounds and bacteria, much attention has been focused on the so-called advanced oxidation processes. These are based on the formation of hydroxyl radicals, which are known to possess a high reductive potential. This study tested the potential of titanium dioxide, an inexpensive and completely inert reagent, to inactivate prions in a heterogeneous photocatalytic process. Initial in vitro experiments were followed by a bioassay with the scrapie strain 263K in Syrian hamsters. The results obtained from this study indicate that titanium dioxide photocatalytic treatment of scrapie-infected brain homogenates reduces infectivity titres significantly" |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
A number of metals have similar properties. Silver is the most famous one - a possible explanation for the traditional popularity of silverware.
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