Hanyoyin oxidation na Photochemical don lalata gurɓataccen gurɓataccen abu sun haɗa da matakai da suka haɗa da catalytic da wadanda ba su da ƙarfi. Tsohon yakan yi amfani da iskar oxygen da hydrogen peroxide azaman oxidants kuma yana dogara da hasken ultraviolet (UV) don fara iskar oxygen da bazuwar gurɓataccen abu. Ƙarshen, wanda aka sani da iskar oxygen da ake kira photocatalytic, ana iya rarraba shi gabaɗaya azaman mai kama da kamanceceniya da ƙayatarwa.
A cikin ɓarna na photocatalytic iri-iri, an gabatar da wani takamaiman adadin kayan aikin semiconductor a cikin gurɓataccen tsarin, haɗe da wani adadin hasken haske. Wannan yana haifar da tashin hankali na nau'i-nau'i na "electron-hole" a kan saman semiconductor na hotuna a ƙarƙashin hasken haske. Narkar da iskar oxygen, kwayoyin ruwa, da sauran abubuwan da aka tallata a kan semiconductor suna hulɗa tare da waɗannan nau'i-nau'i na "electron-hole", suna adana makamashi mai yawa. Wannan yana ba da damar ɓangarorin semiconductor don shawo kan shingen amsawar thermodynamic kuma suyi aiki azaman masu haɓakawa a cikin halayen haɓakawa daban-daban, suna haifar da radicals oxidative sosai kamar • H O. Wadannan masu tsattsauran ra'ayi sannan suna sauƙaƙe lalata gurɓataccen gurɓataccen abu ta hanyar matakai kamar ƙari na hydroxyl, maye gurbin, da canja wurin lantarki.
Hanyoyin oxyidation na Photochemical sun haɗa da iskar oxygen da aka yi amfani da su, da iskar oxygen mai ban sha'awa, da photocatalytic oxidation. Photochemical hadawan abu da iskar shaka hadawa hadawan abu da iskar shaka sinadari da kuma radiation don bunkasa kudi da kuma iya aiki oxidative na hadawan abu da iskar shaka halayen idan aka kwatanta da mutum iskar shaka sinadari ko radiation magani. Ana amfani da hasken ultraviolet a matsayin tushen radiation a cikin iskar oxygen na photocatalytic.
Bugu da ƙari, dole ne a shigar da ƙayyadaddun adadin abubuwan da ake buƙata na oxidants kamar hydrogen peroxide, ozone, ko wasu abubuwan haɓakawa a cikin ruwa. Wannan hanya tana da tasiri sosai don kawar da ƙananan ƙwayoyin halitta, irin su rini, waɗanda ke da wuyar lalacewa kuma suna da guba. Halin oxidation na Photochemical yana haifar da radicals masu yawan gaske a cikin ruwa, waɗanda ke rushe tsarin mahadi.
Lokacin aikawa: Satumba-07-2023
