Abacwaningi be-VCU bathole isikhuthazo esisebenzayo sokuguqulwa kwe-carbon dioxide ibe yi-formic acid ku-thermochemical - okutholakalayo okunganikeza isu elisha lokubamba ikhabhoni elingancishiswa njengoba umhlaba ubhekene nokushintsha kwesimo sezulu. I-ejenti engabaluleka ye-carbon dioxide esemkhathini.
“Kuyaziwa kahle ukuthi ukukhula okusheshayo kwamagesi okushisa emkhathini kanye nemiphumela yawo emibi emvelweni kungenye yezinselelo ezinkulu ezibhekene nesintu namuhla,” kusho umlobi oholayo uDkt. Shiv N. Khanna, uSolwazi we-Commonwealth Emeritus emnyangweni wefiziksi e-Faculty of Humanities VCU. “Ukuguqulwa kwe-CO2 kube amakhemikhali awusizo njenge-formic acid (HCOOH) kuyindlela ehlukile engabizi kakhulu yokunciphisa imiphumela emibi ye-CO2. I-Formic acid iwuketshezi olunobuthi obuphansi okulula ukuluthutha nokuyigcina ekushiseni okujwayelekile. Ingasetshenziswa futhi njengesandulela samakhemikhali esenenani eliphezulu, isithwali sokugcina i-hydrogen, kanye nesinye isithasiselo sikaphethiloli wezinto zasendulo esikhathini esizayo.”
UHanna kanye nososayensi we-VCU ocwaninga nge-physics uDkt. Turbasu Sengupta bathole ukuthi amaqoqo ahlanganisiwe e-chalcogenides ensimbi angasebenza njengezinto ezibangela ukuguqulwa kwe-CO2 ibe yi-formic acid nge-thermochemical. Imiphumela yabo ichazwe ephepheni elinesihloko esithi “Ukuguqulwa kwe-CO2 ibe yi-Formic Acid ngokulungisa izimo ze-Quantum kumaqoqo e-Metal Chalcogenide” eshicilelwe ku-Communications Chemistry of Nature Portfolio.
“Sikhombisile ukuthi, ngokuhlanganiswa okufanele kwama-ligand, isithiyo sokusabela ekuguquleni i-CO2 ibe yi-formic acid singancishiswa kakhulu, okusheshisa kakhulu ukukhiqizwa kwe-formic acid,” kusho uHanna. “Ngakho-ke singasho ukuthi lawa ma-catalyst ashiwoyo angenza ukwenziwa kwe-formic acid kube lula noma kube nokwenzeka kakhudlwana. Ukusetshenziswa kwamaqoqo amakhulu anezindawo eziningi zokubopha ama-ligand noma ngokunamathisela ama-donor ligand asebenza kahle kakhulu kuhambisana nokuthuthuka kwethu okuqhubekayo ekuguqulweni kwe-formic acid kungafezwa kunalokho okuboniswa ekulingiseni kokubala.”
Lolu cwaningo lwakhela emsebenzini kaHanna wangaphambilini obonisa ukuthi ukukhetha okufanele kwe-ligand kungaguqula iqembu libe yi-superdonor enikela ngama-electron noma i-acceptor eyamukela ama-electron.
“Manje sibonisa ukuthi umphumela ofanayo unamandla amakhulu ekuhlaziyweni kwezakhi zofuzo ngokusekelwe kumaqoqo e-chalcogenide ensimbi,” kusho uHanna. “Ikhono lokuhlanganisa amaqoqo aqinile ahlanganisiwe nokulawula ikhono lawo lokunikela noma ukwamukela ama-electron livula insimu entsha ye-catalysis, njengoba ukusabela okuningi kwe-catalytic kuncike kuma-catalyst anikela noma amukela ama-electron.”
Omunye wososayensi bokuqala bokuhlola kulo mkhakha, uDkt. Xavier Roy, uSolwazi Ohlangene WeKhemistri eColumbia University, uzovakashela i-VCU ngo-Ephreli 7 kwi-Fiziksi Department Spring Symposium.
“Sizosebenzisana naye ukuze sibone ukuthi singayithuthukisa kanjani futhi siqalise kanjani i-catalyst efanayo sisebenzisa ilebhu yakhe yokuhlola,” kusho uHanna. “Sesivele sisebenzisane eduze neqembu lakhe, lapho bakha khona uhlobo olusha lwezinto ezisebenza ngogesi. Kulokhu uzoba yi-catalyst.”
Bhalisela i-VCU Newsletter ku-newsletter.vcu.edu bese uthola izindaba ezikhethiwe, amavidiyo, izithombe, iziqeshana zezindaba kanye nohlu lwemicimbi ebhokisini lakho lokungenayo.
I-CoStar Group Imemezela AmaRandi ayizigidi eziyi-18 ukuze i-VCU Yakhe Isikhungo Sobuciko Nokusungula Izinto Ezintsha se-CoStar