Nano-titanium dioxide TIO2 waxay leedahay firfircooni photocatalytic sare leh waxayna leedahay sifooyin muuqaal ah oo aad u qiimo badan.Iyada oo leh guryaha kiimikaad ee deggan iyo ilo badan oo laga helo alaabta ceeriin, hadda waa sawir-qaadista ugu rajada badan.

Marka loo eego nooca crystal, waxa loo qaybin karaa: T689 rutile nano titanium dioxide iyo T681 anatase nano titanium dioxide.

Marka loo eego sifooyinka dusha sare, waxaa loo qaybin karaa: hydrophilic nano titanium dioxide iyo lipophilic nano titanium dioxide.

   Nano titanium dioxide TIO2Inta badan waxay leedahay laba nooc oo crystal ah: Anatase iyo Rutile.Rutile titanium dioxide waa ka xasilloon oo cufan marka loo eego anatase titanium dioxide, waxa uu leeyahay adayg sare, cufnaanta, dielectric joogto ah iyo index refractive, iyo awood qarinta iyo awoodda madow ayaa sidoo kale ka sarreeya.Nooca anatase-ka titanium dioxide waxa uu leeyahay milicsi sare qaybta mawjadda gaaban ee iftiinka muuqda marka loo eego nooca rutile-ka titanium dioxide, waxa uu leeyahay midab buluug ah, waxana uu leeyahay awood nuugista ultraviolet ka hooseeya nooca rutile, waxana uu leeyahay waxqabad photocatalytic ka sarreeya marka loo eego nooca rutile. nooca rutile.Xaaladaha qaarkood, titanium dioxide anatase waxaa loo rogi karaa titanium dioxide rutile.

Codsiyada ilaalinta deegaanka:

Oo ay ku jiraan daaweynta wasakhowga organic (hydrocarbons, halogenated hydrocarbons, karboksylic acids, surfactants, dheeh, organics nitrogen-ku jira, sunta cayayaanka fosfooraska organic, iwm), daawaynta wasakh ah inorganic (photocatalysis xallin karaa Cr6+, Hg2+, Pb2+, iwm.) Wasakhowga ion birta culus) iyo nadiifinta deegaanka gudaha (hoos u dhaca ammonia gudaha, formaldehyde iyo benzene by daaha cagaaran photocatalytic).

Codsiyada daryeelka caafimaadka:

Nano-titanium dioxide waxay jajabisaa bakteeriyada hoos timaadda ficilka sawir-qaadista si loo gaaro saameynta bakteeriyada, disha bakteeriyada iyo fayraska, waxaana loo isticmaali karaa jeermiska iyo jeermiska biyaha guriga;dhalooyinka, ceramics, iwm oo ay ku raran yihiin TIO2 photocatalysis ayaa loo isticmaalaa tas-hiilaadka nadaafadda ee kala duwan sida isbitaallada, hoteellada, guryaha, iwm. Waxyaalaha ku habboon bakteeriyada iyo carfiska.Waxa kale oo ay firfircoonayn kartaa unugyada kansarka sababa qaarkood.

Saamaynta bakteeriyada TiO2 waxay ku jirtaa saamaynta cabbirkeeda.Inkasta oo titanium dioxide (TiO2 caadiga ah) ay sidoo kale leedahay saameyn sawir-qaadis ah, waxay sidoo kale dhalin kartaa lammaane elektaroonig ah iyo dalool, laakiin waqtigeeda si ay u gaarto dusha sare ee walxaha ayaa ka sarreeya microseconds, wayna fududahay in la isku daro.Way adag tahay in la sameeyo saamaynta bakteeriyada bakteeriyada, iyo heerka nano-fidinta ee TiO2, electrons iyo godadka ku faraxsan iftiinka ayaa ka guura jirka ilaa dusha sare, oo kaliya waxay qaadataa nanoseconds, picoseconds, ama xitaa femtoseconds.Dib-u-habaynta elektarooniga sawir-qaadista iyo godadka waa Sida ay u kala horreeyaan nanoseconds, waxay si dhakhso ah ugu guuri kartaa dusha sare, weerari kartaa noolaha bakteeriyada, waxayna ciyaari kartaa saameyn bakteeriyada u dhiganta.

Anatase nano titanium dioxide waxay leedahay firfircooni sare oo dusha sare ah, awoodda bakteeriyada bakteeriyada, iyo alaabtu way fududahay in la kala firdhiyo.Tijaabooyinku waxay muujiyeen in nano-titanium dioxide ay leedahay awood bakteeriyad xooggan oo ka dhan ah Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus, Salmonella iyo Aspergillus.Waxaa si qoto dheer loo ansixiyay oo si weyn loogu isticmaalo badeecooyinka bakteeriyada ee beeraha dunta, ceramics, caag, iyo daawada.

Daahan ka-hortagga ceeryaanka iyo is-nadiifinta:

Marka la eego shucaaca iftiinka ultraviolet, biyuhu waxay si buuxda u galaan filimka titanium dioxide.Sidaa darteed, dahaadhka lakabka nano-titanium dioxide ee muraayadaha musqusha, muraayadaha baabuurta iyo muraayadaha gadaal ayaa door ka ciyaari kara ka hortagga ceeryaamo.Waxa kale oo ay ogaan kartaa is-nadiifinta dusha sare ee nalalka waddooyinka, jidadka waaweyn ee ilaaliya, iyo dhisidda gogosha derbiga dibadda.

Shaqada Photocatalytic

Natiijooyinka daraasadda ayaa lagu ogaaday in hoos ficilka iftiinka qoraxda ama ultraviolet rays ee iftiinka, Ti02 waxay kicisaa oo ay abuurtaa xag-jiryo bilaash ah oo leh firfircooni firfircoon oo sarreeya, kaas oo soo saari kara photooxidation xooggan iyo awoodaha yaraynta, waxayna kicin kartaa oo sawir qaadi kartaa formaldehyde kala duwan oo ku xiran dusha sare. ee walxaha.Sida walxaha organic iyo qaar ka mid ah walxaha aan organic ahayn.Wuxuu ciyaari karaa shaqo nadiifinta hawada gudaha.

Shaqada ilaalinta UV

titanium dioxide waxa ay leedahay awood gaar ah oo uu ku nuugo fallaadhaha ultraviolet, gaar ahaan fallaadhaha ultraviolet-ka ee mowjadaha dheer ee waxyeelada u leh jidhka bini'aadamka, UVA\UVB, waxay leeyihiin awood nuugista oo xooggan.Degenaansho kiimikaad oo heer sare ah, xasilloonida kulaylka, sun la'aanta iyo guryaha kale.ultraviolet titanium dioxide ayaa awood xoog leh u leh in uu nuugo fallaadhaha ultraviolet sababtoo ah cabbirka walxaha yar yar (transparent) iyo dhaqdhaqaaq weyn.Intaa waxaa dheer, waxay leedahay midab cad oo midab leh, xoqin hooseeya, iyo kala firidhsan fudud oo wanaagsan.Waxaa la go'aamiyay in titanium dioxide uu yahay alaabta ceeriin ee ugu badan ee loo isticmaalo qurxinta.Marka loo eego shaqooyinkeeda kala duwan ee qurxinta, tayada kala duwan ee titanium dioxide ayaa la isticmaali karaa.Cadaadiska iyo mugdiga titanium dioxide ayaa loo isticmaali karaa in lagu qurxiyo midabyo kala duwan.Marka titanium dioxide loo isticmaalo sida wax lagu daro cad, T681 anatase titanium dioxide ayaa inta badan la isticmaalaa, laakiin marka awoodda qarsoon iyo caabbinta iftiinka la tixgeliyo, Way fiicantahay in la isticmaalo T689 rutile titanium dioxide.