I-Nano-titanium dioxide i-TIO2 inomsebenzi ophezulu we-photocatalytic kwaye ineempawu ezibaluleke kakhulu ezibonakalayo.Ngeepropati ezizinzileyo zeekhemikhali kunye nemithombo eninzi yezinto eziluhlaza, okwangoku iyona photocatalyst ethembisayo.

Ngokohlobo lwekristale, lunokwahlulwa lube: T689 rutile nano titanium dioxide kunye ne-T681 anatase nano titanium dioxide.

Ngokweempawu zayo zomphezulu, inokwahlulwa ibe: i-hydrophilic nano titanium dioxide kunye ne-lipophilic nano titanium dioxide.

   Nano titanium dioxide TIO2ubukhulu becala ineendlela ezimbini zekristale: iAnatase kunye neRutile.I-rutile titanium dioxide izinzile kwaye ixinene ngakumbi kune-anatase titanium dioxide, inobulukhuni obuphezulu, ingxinano, i-dielectric constant kunye ne-refractive index, kwaye amandla ayo okufihla kunye namandla okuthambisa nawo aphezulu.I-anatase-type titanium dioxide inokubonakala okuphezulu kwindawo yamaza amafutshane okukhanya okubonakalayo kune-rutile-type titanium dioxide, ine-tint bluish, kwaye inomthamo ophantsi we-ultraviolet wokufunxa kunohlobo lwe-rutile, kwaye inomsebenzi ophezulu we-photocatalytic kunoko. uhlobo lwe-rutile.Phantsi kweemeko ezithile, i-anatase titanium dioxide inokuguqulwa ibe yirutile titanium dioxide.

Ukhuseleko lokusingqongileyo izicelo:

Kubandakanya unyango lwezingcolisi eziphilayo (i-hydrocarbons, i-halogenated hydrocarbons, i-carboxylic acids, i-surfactants, i-dyes, i-nitrogen-containing organics, i-organic phosphorus pesticides, njl.), unyango lwe-inorganic pollutants (i-photocatalysis inokusombulula i-Cr6 +, i-Hg2 +, i-Pb2 +, njl. Ungcoliseko lwee-ion zentsimbi enzima) kunye nokucocwa kwemekobume yangaphakathi (ukonakala kweammonia yangaphakathi, i-formaldehyde kunye ne-benzene nge-photocatalytic green coatings).

Izicelo kukhathalelo lwempilo:

I-Nano-titanium dioxide ibola iibhaktheriya phantsi kwesenzo se-photocatalysis ukuphumeza umphumo we-antibacterial, ukubulala iibhaktheriya kunye neentsholongwane, kwaye ingasetyenziselwa ukwenza inzala kunye nokubulala iintsholongwane emanzini asekhaya;iglasi, iiseramics, njl. ezilayishwe nge-TIO2 photocatalysis zisetyenziswa kwiindawo ezahlukeneyo zococeko ezifana nezibhedlele, iihotele, amakhaya, njl njl. Izinto ezifanelekileyo zokulwa ne-antibacterial kunye ne-deodorizing.Isenokwenza iiseli ezithile ezibanga umhlaza zingasebenzi.

Impembelelo ye-bactericidal ye-TiO2 ilele kwisiphumo sobungakanani bayo.Nangona i-titanium dioxide (i-TiO2 eqhelekileyo) nayo inefuthe le-photocatalytic, iyakwazi ukuvelisa i-electron kunye neebini zemingxuma, kodwa ixesha layo lokufikelela kumphezulu wezinto eziphathekayo lingaphezulu kwe-microseconds, kwaye kulula ukuyidibanisa.Kunzima ukwenza i-antibacterial effect, kunye ne-nano-dispersion degree ye-TiO2, ii-electron kunye nemingxuma evuyiswa kukukhanya isuka emzimbeni ukuya phezulu, kwaye ithatha kuphela i-nanoseconds, i-picoseconds, okanye i-femtoseconds.Ukudityaniswa kwakhona kwee-electron ze-photogenerated kunye nemingxuma yi-Oda ye-nanoseconds, inokufudukela ngokukhawuleza phezulu, ihlasele i-bacterial organisms, kwaye idlale i-antibacterial effect ehambelanayo.

I-Anatase nano titanium dioxide inomsebenzi ophezulu ophezulu, amandla anamandla okulwa ne-antibacterial, kwaye imveliso kulula ukuyichitha.Uvavanyo lubonise ukuba i-nano-titanium dioxide inamandla okubulala amagciwane ngokuchasene ne-Pseudomonas aeruginosa, i-Escherichia coli, i-Staphylococcus aureus, i-Salmonella kunye ne-Aspergillus.Ivunyiwe ngokunzulu kwaye isetyenziswa ngokubanzi kwiimveliso ze-antibacterial kwimimandla yempahla, i-ceramics, irabha kunye namayeza.

Ukunqanda inkungu kunye nokuzicoca:

Ngaphantsi kokukhanya kwe-ultraviolet irradiation, amanzi angena ngokupheleleyo kwifilimu ye-titanium dioxide.Ngoko ke, ukugquma umaleko we-nano-titanium dioxide kwizibuko zokuhlambela, iiglasi zemoto kunye nezibuko zangasemva zinokudlala indima ekukhuseleni inkungu.Iyakwazi ukuqaphela ukuzicoca komphezulu wezibane zesitalato, iintsimbi zokugada uhola wendlela, kunye nokwakha iithayile zodonga lwangaphandle.

Umsebenzi we-Photocatalytic

Iziphumo zophononongo zifumene ukuba phantsi kwesenzo sokukhanya kwelanga okanye imisebe ye-ultraviolet ekukhanyeni, i-Ti02 isebenza kwaye ivelise i-radicals yamahhala kunye nomsebenzi ophezulu we-catalytic, onokuthi uvelise i-photooxidation eqinile kunye nokunciphisa amandla, kwaye inokwenza i-catalyze kunye ne-photodegrade eyahlukeneyo ye-formaldehyde eqhotyoshelwe kumphezulu. yezinto.Okufana ne-organic matter kunye ne-inorganic matter.Unokudlala umsebenzi wokucoca umoya wangaphakathi.

Umsebenzi wokukhusela UV

Nayiphi na i-titanium dioxide inamandla athile okufunxa imitha ye-ultraviolet, ngakumbi imitha ye-ultraviolet yamaza amade eyingozi kumzimba womntu, i-UVA\UVB, inamandla okufunxa.Ukuzinza kweekhemikhali okugqwesileyo, ukuzinza kwe-thermal, ukungahambi kakubi kunye nezinye iimpawu.I-Ultra-fine titanium dioxide inamandla amakhulu okufunxa imitha ye-ultraviolet ngenxa yesayizi yayo encinci (ecacileyo) kunye nomsebenzi omkhulu.Ukongeza, inombala ocacileyo wethoni, i-abrasion ephantsi, kunye nokusabalalisa okulula.Kufunyaniswe ukuba i-titanium dioxide yeyona nto isetyenziswa kakhulu kwi-inorganic ekrwada kwizinto zokuthambisa.Ngokwemisebenzi yayo eyahlukeneyo kwizithambiso, iimpawu ezahlukeneyo zetitanium dioxide zinokusetyenziswa.Ubumhlophe kunye nokukhanya kwe-titanium dioxide kunokusetyenziswa ukwenza izithambiso zibe nemibala emininzi.Xa i-titanium dioxide isetyenziswe njengesongezo esimhlophe, i-T681 anatase titanium dioxide isetyenziswa kakhulu, kodwa xa amandla okufihla kunye nokumelana nokukhanya kuqwalaselwa , Kungcono ukusebenzisa i-T689 rutile titanium dioxide.