Nzira dze photochemical oxidation dzekuparadza tsvina dzinosanganisira maitiro anosanganisira catalytic ne non-catalytic photochemical oxidation. Yekutanga inowanzo shandisa oxygen nehydrogen peroxide se oxidants uye inoshandisa ultraviolet (UV) light kuti itange oxidation nekuora kwetsvina. Yekupedzisira, inozivikanwa se photocatalytic oxidation, inogona kurongwa se homogeneous uye heterogeneous catalysis.
Mukuora kwe photocatalytic kwakasiyana-siyana, huwandu hwakati hwezvinhu zve semiconductor zvinonzwa nechiedza hunoiswa musystem yakasviba, pamwe chete nehuwandu hwakati hwemwaranzi yechiedza. Izvi zvinoguma nekukurudzwa kwema "electron-hole" pairi ye semiconductor inonzwa nechiedza pasi pechiedza. Okisijeni yakanyungudika, mamorekuru emvura, nezvimwe zvinhu zvinonamirwa pairi ye semiconductor zvinosangana neaya ma "electron-hole" pairi, zvichichengetedza simba rakawandisa. Izvi zvinobvumira zvikamu zve semiconductor kukunda zvipingamupinyi zve thermodynamic reaction uye kushanda se catalysts mumaitiro akasiyana-siyana e catalytic, zvichigadzira ma radicals ane oxidative akawanda akadai se •HO. Aya ma radicals anobva abatsira kudzikira kwezvinosvibisa kuburikidza nemaitiro akadai sekuwedzera hydroxyl, kutsiva, uye kuendesa maerekitironi.
Nzira dzekugadzira oxidation yePhotochemical dzinosanganisira oxidation yephotosensitized, oxidation yephotoexcited, uye oxidation yephotocatalytic. Oxidation yePhotochemical inosanganisa oxidation yemakemikari nemwaranzi kuti iwedzere mwero uye kugona kwe oxidative kwe oxidation reactions zvichienzaniswa ne oxidation yemakemikari ega ega kana kurapwa nemwaranzi. Mwenje we ultraviolet unowanzoshandiswa senzvimbo yemwaranzi mu photocatalytic oxidation.
Pamusoro pezvo, huwandu hwakatarwa hwezvinokonzera makemikari zvakaita sehydrogen peroxide, ozone, kana zvimwe zvinokonzera makemikari hunofanira kuiswa mumvura. Nzira iyi inoshanda zvikuru pakubvisa mamorekuru madiki eorganic, akadai sedhayi, akaoma kushatisa uye ane chepfu. Kugadziriswa kwe photochemical oxidation kunogadzira ma radicals akawanda anokonzera makemikari mumvura, ayo anongokanganisa chimiro chemakemikari eorganic.
Nguva yekutumira: Gunyana-07-2023
