Kutshanje, iqela lophando likaNjingalwazi Kong Lingtao elivela kwiHefei Institute of Physics, iChinese Academy of Sciences ilungiselele i-amorphous Co/C composite material engenanto yokwenza i-hydrogen peroxide (H2O2) ivelise ioksijini ye-singlett kunye nokuqonda ukukhethwa kwe-oxytetracycline (OTC) kwizinto ezinzima. iimatriki zamanzi. Ukupheliswa ngokwesondo. Iziphumo zapapashwa kwijenali Chemical Engineering.googletag.cmd.push(function() {googletag.display('div-gpt-ad-1449240174198-2'); });
I-OTC iyona antibiotic eqhelekileyo ye-tetracycline ekufuyweni kwezilwanyana.Inokufunyanwa kwiindawo ezinozinzo oluqinileyo lwebhayoloji, njengamanzi kunye nomhlaba, ongenakususwa ngempumelelo ngeendlela zobugcisa eziqhelekileyo.
Njengobuchwephesha be-oxidation obulula kunye obusebenzayo, i-oxidation efana ne-Fenton ithathwa njengendlela esebenzayo yokulawula ukungcoliseka kwamanzi.Njengokuba i-electrophilic non-radical, i-oksijeni ye-singlett ibonisa ukukwazi ukuchasana nokuphazanyiswa kwi-substrates yangasemva, eluncedo ekususweni okukhethiweyo. Ukungcola kwezinto eziphilayo eziqukethe amaqela atyebileyo e-electron.Nangona kunjalo, kwiimpendulo ezininzi ezifana ne-Fenton, isivuno se-oksijini ye-singlett siphantsi kwaye igalelo lincinci.
Kule sifundo, abaphandi baqulunqa kwaye baqulunqa i-amorphous Co / C composite engenanto kunye nenani elikhulu lamaqela asebenzayo ane-oksijini afana namaqela e-carbonyl kunye ne-hydroxyl ahanjiswa phezu komhlaba.
Baye bafumana izinto ze-Co / C-3 ngokulungiselela umlinganiselo we-cobalt kunye nekhabhoni, kwaye bazuze ukuthotywa okungcono kwe-20 ppm OTC ngokuvula i-H2O2 kwi-pH engathathi hlangothi. Iziphumo zovavanyo lokucima kunye ne-electron paramagnetic resonance iqinisekisile ukuba i-singlett oxygen eguqulwayo yayiyeyona ntlobo iphambili ye-oxidizing, kwaye akukho hydroxyl radical. yavela kwinkqubo.
I-synergy phakathi kwe-cobalt kunye namaqela asebenzayo aqukethe i-oksijini ngaphakathi kwezinto zidlala indima ephambili ekusebenziseni i-hydrogen peroxide ekubunjweni kwe-oksijeni ye-singlet.Ukongezelela, iindlela ezinokuthi zenzeke kunye ne-ecotoxicity ye-OTC kunye ne-intermediates yayo nayo yavezwa.
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