Mekhoa ea photochemical oxidation bakeng sa ho senyeha ha lintho tse silafatsang e kenyelletsa lits'ebetso tse kenyelletsang khase ea catalytic le e seng ea catalytic photochemical oxidation. Ea pele hangata e sebelisa oksijene le hydrogen peroxide e le li-oxidants 'me e itšetlehile ka leseli la ultraviolet (UV) ho qala ho hlahisa le ho bola ha lintho tse silafatsang. Ea morao-rao, e tsejoang e le photocatalytic oxidation, ka kakaretso e ka aroloa e le catalysis e ts'oanang le e fapaneng.
Ka heterogeneous photocatalytic degradation, palo e itseng ea photosensitive semiconductor material e kenngoa tsamaisong e silafetseng, e kopantsoe le palo e itseng ea mahlaseli a khanyang. Sena se fella ka thabo ea lipara tsa "electron-hole" sebakeng sa semiconductor sa photosensitive tlas'a khanya ea khanya. Oksijene e qhibilihisitsoeng, limolek'hule tsa metsi, le lintho tse ling tse adsorbed holim'a semiconductor li kopana le lipara tsena tsa "electron-hole", ho boloka matla a mangata. Sena se lumella likaroloana tsa semiconductor ho hlola litšitiso tsa thermodynamic reaction le ho sebetsa joalo ka li-catalysts mekhoeng e fapaneng ea catalytic, ho hlahisa li-radicals tse phahameng haholo tse kang •HO. Li-radicals tsena li nolofaletsa ho senyeha ha litšila ka mekhoa e kang ho eketsa hydroxyl, substitution, le electron transfer.
Mekhoa ea oxidation ea photochemical e kenyelletsa oxidation ea photosensitized, photoexcited oxidation, le photocatalytic oxidation. Photochemical oxidation e kopanya k'hemik'hale ea oxidation le mahlaseli ho matlafatsa sekhahla le matla a oxidative a lik'hemik'hale tsa lik'hemik'hale ha li bapisoa le phekolo ea lik'hemik'hale ka bomong kapa phekolo ea mahlaseli. Leseli la ultraviolet hangata le sebelisoa e le mohloli oa mahlaseli ho photocatalytic oxidation.
Ho feta moo, palo e reriloeng esale pele ea li-oxidants tse kang hydrogen peroxide, ozone, kapa lintho tse ling tse etsang hore ho be le lintho tse etsang hore motho a khone ho etsa lintho tse itseng li tlameha ho kenngoa metsing. Mokhoa ona o sebetsa haholo bakeng sa ho tlosa limolek'hule tse nyane tse kang li-dyes, tseo ho leng thata ho li theola le ho ba le chefo. Photochemical oxidation reactions e hlahisa li-radicals tse ngata tse sebetsang ka metsing, tse senyang sebopeho sa metsoako ea manyolo habonolo.
Nako ea poso: Sep-07-2023
