Photochemical oxidation nzira dzekushatisa kwezvinosvibisa dzinosanganisira maitiro anosanganisira zvese zvinokonzeresa uye zvisiri-catalytic photochemical oxidation. Iyo yekutanga inowanzo shandisa oxygen nehydrogen peroxide seoxidants uye inovimba neultraviolet (UV) mwenje kuti itange iyo oxidation uye kuparara kwezvinosvibisa. Iyo yekupedzisira, inozivikanwa se photocatalytic oxidation, inogona kazhinji kuiswa sehomogeneous uye heterogeneous catalysis.
Mune heterogeneous photocatalytic degradation, imwe chiyero che photosensitive semiconductor zvinhu zvinounzwa mune yakasvibiswa system, yakasanganiswa nehumwe huwandu hwemwaranzi yemwenje. Izvi zvinoguma nekunakidzwa kwe "electron-hole" peya pane photosensitive semiconductor pamusoro pasi pechiedza. Okisijeni yakanyungudika, mamorekuru emvura, uye zvimwe zvinhu zvakashambadzirwa pane semiconductor zvinosangana neaya "electron-hole" mapeya, kuchengetedza simba rakawandisa. Izvi zvinobvumira masemiconductor particles kukurira thermodynamic reaction barriers uye kuita secatalysts mune dzakasiyana siyana catalytic reactions, ichigadzira yakanyanya oxidative radicals senge •H O. Aya ma radicals anobva afambisa kushatiswa kwezvinosvibisa kuburikidza nemaitiro akadai sekuwedzera kwehydroxyl, kutsiva, uye kufambisa maerekitironi.
Photochemical oxidation nzira dzinosanganisira photosensitized oxidation, photoexcited oxidation, uye photocatalytic oxidation. Photochemical oxidation inosanganisa kemikari oxidation uye mwaranzi kuti uwedzere mwero uye oxidative kugona kweiyo oxidation maitiro kana ichienzaniswa nechero makemikari oxidation kana kurapwa nemwaranzi. Ultraviolet mwenje inowanzoshandiswa semwaranzi yemwaranzi mune photocatalytic oxidation.
Pamusoro pezvo, huwandu hwakatemerwa hweoxidants sehydrogen peroxide, ozone, kana zvimwe zvinokonzeresa zvinofanirwa kuunzwa mumvura. Iyi nzira inoshanda zvakanyanya pakubvisa madiki mamorekuru, sedhayi, anonetsa kudzikisira uye ane huturu. Photochemical oxidation reactions inogadzira akawanda akanyanya reactive radicals mumvura, ayo anovhiringa nyore kuumbwa kweorganic compounds.
Nguva yekutumira: Sep-07-2023
