Nano-titanium dioxide TIO2 nwere ọrụ fotocatalytic dị elu ma nwee akụrụngwa ngwa anya bara oke uru.Site na akụrụngwa kemịkalụ kwụsiri ike yana ọtụtụ isi mmalite nke akụrụngwa, ọ bụ ugbu a fotocatalyst kacha na-ekwe nkwa.

Dị ka ụdị kristal si dị, enwere ike kewaa ya na: T689 rutile nano titanium dioxide na T681 anatase nano titanium dioxide.

Dabere na njirimara elu ya, enwere ike kewaa ya: hydrophilic nano titanium dioxide na lipophilic nano titanium dioxide.

   Nano titanium dioxide TIO2tumadi nwere ụdị kristal abụọ: Anatase na Rutile.Rutile titanium dioxide kwụsiri ike ma dịkwa oke karịa anatase titanium dioxide, nwere ike siri ike, njupụta dị elu, njupụta dielectric na nkwụghachi azụ, na ike nzuzo ya na ike tinting dịkwa elu.The anatase-ụdị titanium dioxide nwere elu reflectivity na mkpụmkpụ-efegharị efegharị akụkụ nke ìhè a na-ahụ anya karịa rutile-ụdị titanium dioxide, nwere a bluish tint, na nwere ala ultraviolet absorption ikike karịa rutile-ụdị, na nwere elu photocatalytic ọrụ karịa. ụdị rutile.N'okpuru ọnọdụ ụfọdụ, anatase titanium dioxide nwere ike gbanwee ka ọ bụrụ rutile titanium dioxide.

Ngwa nchekwa gburugburu:

Gụnyere ọgwụgwọ nke ihe ndị na-emerụ emerụ (hydrocarbons, halogenated hydrocarbons, carboxylic acid, surfactants, dyes, nitrogen-containing organics, organic phosphorus pesticides, wdg), ọgwụgwọ nke inorganic mmetọ (photocatalysis nwere ike dozie Cr6+, Hg2+, Pb2+, wdg). Mmetọ nke ion metal dị arọ) na ime ka ọ dị ọcha gburugburu ebe obibi (mmebi nke amonia ime ụlọ, formaldehyde na benzene site na mkpuchi fotocatalytic green).

Ngwa na nlekọta ahụike:

Nano-titanium dioxide decomposes bacteria n'okpuru omume nke photocatalysis iji nweta antibacterial mmetụta, na-egbu nje bacteria na nje, na a pụrụ iji sterilization na disinfection nke ụlọ mmiri;A na-eji iko, ceramics, wdg nke ejiri TIO2 photocatalysis mee ihe n'ebe dị iche iche dị ọcha dị ka ụlọ ọgwụ, ụlọ oriri na ọṅụṅụ, ụlọ, wdg. Ihe dị mma maka antibacterial na deodorizing.Ọ nwekwara ike ime ka ụfọdụ mkpụrụ ndụ na-akpata ọrịa kansa arụ ọrụ.

Mmetụta nje bacteria nke TiO2 dabere na nha nha ya.Ọ bụ ezie na titanium dioxide (nke nkịtị TiO2) nwekwara mmetụta photocatalytic, ọ nwekwara ike ịmepụta electron na oghere ụzọ abụọ, ma oge ya iru elu nke ihe dị n'elu microseconds, na ọ dị mfe recombine.Ọ na-esiri ike ịmepụta mmetụta nje bacteria, na nano-dispersion degrees nke TiO2, electrons na oghere na-enwe mmasị na ìhè na-akwaga n'ahụ ahụ gaa n'elu, ọ na-ewe naanị nanoseconds, picoseconds, ma ọ bụ ọbụna femtoseconds.Nchikota nke electrons na oghere ndị a na-emepụta foto bụ N'usoro nke nanoseconds, ọ nwere ike ịkwaga ngwa ngwa n'elu, wakpo nje bacteria, ma kpọọ mmetụta nje bacteria kwekọrọ.

Anatase nano titanium dioxide nwere ọrụ elu elu, ike antibacterial siri ike, na ngwaahịa dị mfe ịgbasa.Nnwale egosiwo na nano-titanium dioxide nwere ikike nje bacteria siri ike megide Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus, Salmonella na Aspergillus.A kwadoro ya nke ọma ma jiri ya mee ihe n'ọtụtụ ebe na ngwaahịa nje bacteria na ngalaba nke textiles, ceramics, roba, na ọgwụ.

Mgbochi ahihia na mkpuchi onwe ya:

N'okpuru irradiation ìhè ultraviolet, mmiri na-abanye kpamkpam na fim titanium dioxide.Ya mere, ikpuchi akwa nano-titanium dioxide na enyo ụlọ ịsa ahụ, enyo ụgbọ ala na enyo azụ nwere ike ịrụ ọrụ n'ịgbochi ikuku.Ọ nwekwara ike ghọta na ihichapụ onwe ya n'elu oriọna okporo ụzọ, ụzọ nchebe okporo ụzọ, na ịmepụta taịlị mgbidi dị n'èzí.

Photocatalytic ọrụ

Nsonaazụ nke ọmụmụ ahụ chọpụtara na n'okpuru omume nke ìhè anyanwụ ma ọ bụ ụzarị ultraviolet na ìhè, Ti02 na-arụ ọrụ ma na-emepụta radicals n'efu na ọrụ catalytic dị elu, nke nwere ike ịmepụta photooxidation siri ike na ike ibelata, ma nwee ike ịmepụta na photodegrade dị iche iche formaldehyde dị n'elu. nke ihe.Dị ka organic okwu na ụfọdụ inorganic okwu.Nwere ike rụọ ọrụ nke sachapụ ikuku ime ụlọ.

Ọrụ mkpuchi UV

Ihe ọ bụla titanium dioxide nwere ụfọdụ ikike ịnabata ụzarị ultraviolet, ọkachasị ụzarị ultraviolet na-efegharị ogologo nke na-emerụ ahụ mmadụ, UVA\UVB, nwere ikike nnabata siri ike.Nkwụsi ike kemịkalụ dị mma, nkwụsi ike ọkụ, enweghị nsi na ihe ndị ọzọ.Ultra-fine titanium dioxide nwere ike siri ike banye ultraviolet ụzarị n'ihi nta urughuru size (transparent) na ukwuu ọrụ.Na mgbakwunye, ọ nwere ụda agba doro anya, abrasion dị ala, yana ezigbo mgbasa ozi dị mfe.Achọpụtara na titanium dioxide bụ akụrụngwa inorganic nke a na-ejikarị eme ihe na ịchọ mma.Dị ka ọrụ ya dị iche iche na ịchọ mma, àgwà dị iche iche nke titanium dioxide nwere ike iji.Enwere ike iji ọcha na opacity nke titanium dioxide mee ka ihe ịchọ mma nwee agba dị iche iche.Mgbe a na-eji titanium dioxide mee ihe dị ka ihe mgbakwunye ọcha, a na-ejikarị T681 anatase titanium dioxide eme ihe, ma mgbe a na-atụle ike nzuzo na nguzogide ọkụ, Ọ ka mma iji T689 rutile titanium dioxide.