Ụzọ oxidation Photochemical maka mmebi nke mmetọ na-agụnye usoro metụtara ma catalytic na ndị na-abụghị catalytic photochemical oxidation. Ndị mbụ na-ejikarị oxygen na hydrogen peroxide dị ka oxidants na-adabere na ultraviolet (UV) ìhè iji malite oxidation na ire ere nke mmetọ. Nke ikpeazụ a, nke a maara dị ka photocatalytic oxidation, nwere ike ịkewa n'ozuzu dị ka otu na ụdị catalysis.
N'ime mmebi nke fotocatalytic dị iche iche, a na-ewebata ụfọdụ ihe semiconductor fotosenitive n'ime usoro mmetọ ahụ, jikọtara ya na ụfọdụ ọkụ ọkụ. Nke a na-ebute mkpali nke ụzọ abụọ "electron-hole" n'elu fotosensitive semiconductor n'okpuru ikpughe ọkụ. oxygen gbazere, ụmụ irighiri mmiri, na ihe ndị ọzọ a na-etinye na semiconductor na-emekọrịta ihe na ụzọ abụọ “electron-hole” ndị a, na-echekwa ike karịrị akarị. Nke a na-enye ohere ahụ akụkụ nke semiconductor imeri ihe mgbochi mmeghachi omume thermodynamic ma mee ihe dị ka ihe na-akpali akpali na mmeghachi omume catalytic dị iche iche, na-emepụta radicals oxidative dị ukwuu dị ka • H O. Ndị a radicals na-emeziwanye mmebi nke mmetọ site na usoro dịka mgbakwunye hydroxyl, nnọchi, na nnyefe elektrọn.
Ụzọ oxidation foto kemịkalụ gụnyere oxidized fotosensitized, oxidation photocatalytic, na photocatalytic oxidation. Photochemical oxidation na-ejikọta kemịkalụ oxidation na radieshon iji welie ọnụego na ikike oxidative nke mmeghachi omume oxidation ma e jiri ya tụnyere kemịkalụ oxidation ma ọ bụ ọgwụgwọ radieshon. A na-ejikarị ọkụ ultraviolet eme ihe dị ka isi iyi radieshon na photocatalytic oxidation.
Na mgbakwunye, a ga-ebubarịrị ọnụọgụ oxidants dị ka hydrogen peroxide, ozone, ma ọ bụ ụfọdụ ihe na-akpali akpali n'ime mmiri. Usoro a na-arụ ọrụ nke ọma maka iwepụ obere ụmụ irighiri ihe ndị dị ndụ, dị ka agbaji, nke siri ike imebi ma nwee nsí. Mmeghachi omume oxidation Photochemical na-emepụta ọtụtụ radicals na-arụ ọrụ nke ukwuu na mmiri, nke na-akpaghasị nhazi nke ogige organic ngwa ngwa.
Oge nzipu: Sep-07-2023
