Polyethylene terephthalate (PET), e le polyester ea bohlokoa ea thermoplastic, e na le tlhahiso ea selemo le selemo ea lefats'e e fetang lithane tse limilione tse 70 'me e sebelisoa haholo liphuthelong tsa lijo tsa letsatsi le letsatsi, masela le masimo a mang. Leha ho le joalo, ka mor'a bongata bona bo boholo ba tlhahiso, hoo e ka bang 80% ea lithōle tsa PET li lahloa ka mokhoa o sa khethoeng kapa li tlatsoa mobung, e leng se bakang tšilafalo e mpe ea tikoloho 'me se lebisa tšenyehong ea mehloli e mengata ea khabone. Mokhoa oa ho finyella ho sebelisoa hape ha lithōle tsa PET e fetohile phephetso e kholo e hlokang tsoelo-pele bakeng sa nts'etsopele e tsitsitseng ea lefats'e.
Har'a mahlale a teng a ho sebelisa hape, theknoloji ea ho fetola khanya ea letsatsi e hapile tlhokomelo e kholo ka lebaka la litšobotsi tsa eona tse tala le tse bobebe. Mokhoa ona o sebelisa matla a letsatsi a hloekileng, a sa silafatseng e le matla a susumetsang, a hlahisang mefuta e sebetsang ea redox sebakeng seo tlas'a mocheso o tloaelehileng le khatello ho nolofatsa phetoho le ntlafatso ea boleng ba polasetiki ea litšila. Leha ho le joalo, lihlahisoa tsa lits'ebetso tsa hona joale tsa ho fetola khanya ea letsatsi li lekanyelitsoe haholo-holo metsoakong e bonolo e nang le oksijene e kang formic acid le glycolic acid.
Haufinyane tjena, sehlopha sa bafuputsi se tsoang Setsing sa Phetoho ea Lik'hemik'hale le Ts'ebetso setsing se seng Chaena se sisintse ho sebelisa PET le ammonia tse senyehileng e le mehloli ea khabone le naetrojene, ka ho latellana, ho hlahisa formamide ka karabelo ea ho kopanya ea CN ea photocatalytic. Ho fihlela sena, bafuputsi ba entse photocatalyst ea Pt1Au/TiO2. Ka har'a catalyst ena, libaka tsa Pt tsa athomo e le 'ngoe li tšoara lielektrone tse hlahisoang ke photocatalytic ka khetho, ha li-nanoparticles tsa Au li hapa masoba a hlahisoang ke photocatalytic, e leng se ntlafatsang haholo karohano le katleho ea phetisetso ea lipara tsa lielektrone tse hlahisoang ke photocatalytic, ka hona se matlafatsa ts'ebetso ea photocatalytic. Sekhahla sa tlhahiso ea formamide se fihlile hoo e ka bang 7.1 mmol gcat⁻¹ h⁻¹. Liteko tse kang in-situ infrared spectroscopy le electron paramagnetic resonance li senotse tsela ea karabelo e tsamaisoang ke radical: masoba a hlahisoang ke photocatalytic ka nako e le 'ngoe a kopanya ethylene glycol le ammonia, a hlahisa li-intermediate tsa aldehyde le amino radicals (·NH₂), tse fetang ho kopanya ha CN ho qetella li thehile formamide. Mosebetsi ona ha o qale feela tsela e ncha ea phetoho ea boleng bo holimo ea polasetiki ea litšila, e ntlafatsang mefuta e fapaneng ea lihlahisoa tsa ntlafatso ea PET, empa hape e fana ka leano la maiketsetso le letala, le theko e tlaase le le tšepisang bakeng sa tlhahiso ea metsoako ea bohlokoa e nang le naetrojene e kang meriana le chefo e bolaeang likokoanyana.
Liphuputso tse amanang le tsona li phatlalalitsoe ho Khatiso ea Machaba ea Angewandte Chemie tlas'a sehlooho se reng "Photocatalytic Formamide Synthesis from Plastic Waste and Ammonia through CN Bond Construction Under Stain Conditions". Phuputso e fumane chelete ho tsoa mererong e tšehetsoeng ke National Natural Science Foundation of China, Joint Laboratory Fund for New Materials pakeng tsa Chinese Academy of Sciences le The University of Hong Kong, har'a mehloli e meng.
Nako ea poso: Loetse-26-2025