O auala fa'ama'i fa'ama'i mo le fa'aleagaina o mea filogia e aofia ai fa'agasologa e aofia uma ai fa'ama'i fa'ama'i ma fa'ama'i fa'ama'i. O le mea muamua e masani ona faʻaaogaina le okesene ma le hydrogen peroxide e fai ma mea faʻamaʻi ma faʻalagolago i le malamalama ultraviolet (UV) e amata ai le faʻamaʻiina ma le faʻaleagaina o mea filogia. O le mea mulimuli, ua taʻua o le photocatalytic oxidation, e masani ona faʻavasegaina o le homogeneous ma heterogeneous catalysis.
I le heterogeneous photocatalytic degradation, o se aofaiga patino o mea photosensitive semiconductor ua faʻafeiloaʻi i totonu o le faiga faʻaleagaina, faʻatasi ma se aofaʻi o faʻamalama malamalama. O le mea lea e mafua ai le faʻafiafiaina o paga "eletonika-pu" i luga o le ata semiconductor luga i lalo o le malamalama. O le okesene fa'amavae, mole vai, ma isi mea o lo'o fa'apipi'i i luga o le semiconductor e fegalegaleai ma nei paga "electron-hole", e teu ai le malosi tele. Ole mea lea e mafai ai e vaega semiconductor ona fa'ato'ilaloina pa puipui o le thermodynamic ma galue e fai ma fa'agaioiga i fa'agaioiga catalytic eseese, fa'atupuina fa'ama'i fa'ama'i e pei o le •H O. O nei radicals ona faafaigofieina ai lea o le faaleagaina o mea filogia e ala i faiga e pei o le hydroxyl faaopoopo, suitulaga, ma le eletise eletise.
O auala fa'ama'i fa'ama'i e aofia ai le fa'ama'iina o ata, fa'ama'i fa'atosina, ma fa'ama'i fa'ama'i. Photochemical oxidation tu'ufa'atasia fa'ama'i fa'ama'i ma fa'avevela e fa'aleleia ai le fua ma le malosi fa'ama'i o tali fa'ama'i fa'atusatusa i fa'ama'i fa'ama'i ta'ito'atasi po'o togafitiga fa'avevela. E masani ona fa'aogaina le malamalama o le ultraviolet e fai ma puna fa'avevela ile fa'ama'iina o le photocatalytic.
E le gata i lea, e tatau ona tu'uina atu i totonu o le vai se aofa'i o fa'ama'i e pei o le hydrogen peroxyide, osone, po'o ni mea fa'apitoa. O lenei metotia e sili ona aoga mo le aveeseina o ni meaola laiti, e pei o vali, e faigata ona faʻaleagaina ma maua ai le oona. O gaioiga fa'ama'i fa'ata'ita'i e fa'atupuina ai le tele o vaila'au fa'ato'aga i totonu o le vai, lea e faigofie ona fa'alavelaveina le fausaga o mea fa'aola.
Taimi meli: Sep-07-2023
