Nano-titanium dioxide TIO2 ili ndi ntchito yayikulu ya photocatalytic ndipo ili ndi mawonekedwe ofunikira kwambiri.Ndi katundu wokhazikika wamankhwala komanso magwero ambiri azinthu zopangira, pakali pano ndiye photocatalyst yodalirika kwambiri.

Malinga ndi mtundu wa kristalo, imatha kugawidwa kukhala: T689 rutile nano titanium dioxide ndi T681 anatase nano titanium dioxide.

Malinga ndi mawonekedwe ake pamwamba, akhoza kugawidwa mu: hydrophilic nano titaniyamu woipa ndi lipophilic nano titaniyamu woipa.

   Nano titanium dioxide TIO2makamaka ali ndi mitundu iwiri ya kristalo: Anatase ndi Rutile.Rutile titaniyamu woipa ndi wokhazikika komanso wandiweyani kuposa anatase titanium dioxide, ali ndi kuuma kwakukulu, kachulukidwe, dielectric constant ndi refractive index, ndipo mphamvu yake yobisala ndi tinting mphamvu ndizokwera.Titanium dioxide yamtundu wa anatase imakhala ndi kuwala kwakukulu mu gawo laling'ono la kuwala kowoneka bwino kuposa mtundu wa rutile wa titaniyamu woipa, imakhala ndi tint yobiriwira, ndipo imakhala ndi mphamvu yotsika ya ultraviolet kuposa mtundu wa rutile, ndipo imakhala ndi ntchito ya photocatalytic kuposa mtundu wa rutile.Nthawi zina, anatase titaniyamu woipa akhoza kusandulika rutile titaniyamu woipa.

Ntchito zoteteza zachilengedwe:

Kuphatikizapo mankhwala oipitsa organic (mahydrocarbon, halogenated hydrocarbons, zidulo carboxylic, surfactants, utoto, nayitrogeni munali organics, organic phosphorous mankhwala, etc.), mankhwala zoipitsa inorganic (photocatalysis akhoza kuthetsa Cr6+, Hg2+, Pb2+, etc.). Kuipitsidwa kwa ayoni a heavy metal) ndi kuyeretsa m’nyumba (kuwonongeka kwa ammonia m’nyumba, formaldehyde ndi benzene ndi zokutira zobiriwira za photocatalytic).

Zofunsira pazaumoyo:

Nano-titaniyamu woipa decomposes mabakiteriya pansi zochita za photocatalysis kukwaniritsa antibacterial kwenikweni, kupha mabakiteriya ndi mavairasi, ndipo angagwiritsidwe ntchito yolera yotseketsa ndi disinfection m'madzi m'nyumba;galasi, ceramics, etc. yodzaza ndi TIO2 photocatalysis amagwiritsidwa ntchito m'malo osiyanasiyana aukhondo monga zipatala, mahotela, nyumba, ndi zina zotero. Zinthu zabwino zothandizira antibacterial ndi deodorizing.Zingathenso kuyambitsa maselo ena omwe amayambitsa khansa.

Mphamvu ya bactericidal ya TiO2 ili mu kukula kwake kwachulukidwe.Ngakhale titaniyamu woipa (wamba TiO2) imakhalanso ndi zotsatira za photocatalytic, imathanso kupanga ma elekitironi ndi mabowo awiriawiri, koma nthawi yake yofikira pamwamba pa zinthuzo ili pamwamba pa microseconds, ndipo n'zosavuta kugwirizanitsa.N'zovuta kusonyeza antibacterial zotsatira, ndi nano-kubalalitsidwa digiri TiO2, ma elekitironi ndi mabowo okondwa ndi kuwala amasamukira kumtunda, ndipo zimangotengera nanoseconds, picoseconds, kapena femtoseconds.The recombination wa photogenerated ma elekitironi ndi mabowo ndi Mu dongosolo la nanoseconds, akhoza mofulumira kusamukira pamwamba, kuukira bakiteriya zamoyo, ndi lolingana antibacterial kwenikweni.

Anatase nano titaniyamu woipa ali mkulu pamwamba ntchito, wamphamvu antibacterial mphamvu, ndipo mankhwala ndi zosavuta kumwazikana.Mayesero awonetsa kuti nano-titanium dioxide ili ndi mphamvu yolimbana ndi Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus, Salmonella ndi Aspergillus.Zavomerezedwa mozama komanso zimagwiritsidwa ntchito kwambiri pazinthu zowononga mabakiteriya m'minda ya nsalu, zoumba, mphira, ndi mankhwala.

Anti-fogging ndi kudziyeretsa:

Pansi pa kuwala kwa ultraviolet kuwala, madzi amalowa kwathunthu mufilimu ya titaniyamu.Chifukwa chake, kuyatsa wosanjikiza wa nano-titanium dioxide pagalasi losambira, magalasi amgalimoto ndi magalasi owonera kumbuyo kungathandize kupewa chifunga.Itha kuzindikiranso kudziyeretsa yokha kwa pamwamba pa nyali za mumsewu, njanji zapamsewu, ndikumanga matailosi akunja akunja.

Photocatalytic ntchito

Zotsatira za kafukufukuyu zinapeza kuti pochita kuwala kwa dzuwa kapena kuwala kwa ultraviolet, Ti02 imayambitsa ndi kupanga ma radicals aulere omwe ali ndi ntchito yothandiza kwambiri, yomwe imatha kupanga photooxidation yamphamvu ndi mphamvu zochepetsera, ndipo imatha kuyambitsa ndi kujambula zithunzi zosiyanasiyana za formaldehyde zomwe zimamangiriridwa pamwamba. wa zinthu.Monga organic matter ndi zinthu zina zakuthupi.Itha kuchita ntchito yoyeretsa mpweya wamkati.

Ntchito yoteteza UV

Titanium dioxide iliyonse imatha kuyamwa cheza cha ultraviolet, makamaka cheza chakutali cha ultraviolet chomwe chimakhala chovulaza thupi la munthu, UVA\UVB, chimakhala ndi mphamvu yoyamwa mwamphamvu.Kukhazikika kwabwino kwamankhwala, kukhazikika kwamafuta, kusakhala kawopsedwe ndi zinthu zina.Titaniyamu woipa kwambiri amatha kuyamwa cheza cha ultraviolet chifukwa cha tinthu tating'onoting'ono (chowonekera) komanso ntchito yayikulu.Kuphatikiza apo, ili ndi kamvekedwe kamtundu womveka bwino, kutsika pang'ono, komanso kubalalitsidwa bwino kosavuta.Zatsimikiziridwa kuti titaniyamu woipa ndiye chinthu chomwe chimagwiritsidwa ntchito kwambiri muzodzoladzola.Malinga ndi ntchito zake zosiyanasiyana mu zodzoladzola, makhalidwe osiyanasiyana titaniyamu woipa angagwiritsidwe ntchito.Kuyera ndi kuwala kwa titanium dioxide kungagwiritsidwe ntchito kupanga zodzoladzola kukhala ndi mitundu yosiyanasiyana.Pamene titaniyamu woipa amagwiritsidwa ntchito ngati chowonjezera choyera, T681 anatase titanium dioxide imagwiritsidwa ntchito makamaka, koma pamene mphamvu yobisala ndi kukana kuwala zimaganiziridwa , Ndi bwino kugwiritsa ntchito T689 rutile titanium dioxide.