Abacwaningi boMnyango wezeSayensi ye-Interface eFritz Haber Institute baphenye ukuthi izindlela zokwelapha ezingase zibe namandla kagesi ezishaywayo zithuthukisa kanjani ikhono lezindawo zethusi ezinekristalu eyodwa, ezisetshenziswa njengezici zamamodeli, ukuguqula i-carbon dioxide ibe izinto zokubasa ezifana ne-ethylene ne-ethanol. Indlela inika amandla ukulawulwa okuhlosiwe kwezinguquko zesakhiwo namakhemikhali endaweni yethusi, okwandisa ukukhetha nokusebenza kahle kokuguqulwa kwe-CO2. Lokhu okutholakele kungasiza ukunciphisa ukukhishwa kwe-CO2 futhi kukhiqize imithombo yamandla avuselelekayo.
Ukuthuthukiswa kwezimboni okusheshayo kanye nokugawulwa kwamahlathi kuye kwanda kakhulu ukukhishwa kwe-CO2 emhlabeni jikelele, kwasheshisa ukuguquka kwesimo sezulu. Ukuguqula i-CO2 ibe amakhemikhali awusizo njenge-ethylene ne-ethanol kuyindlela ethembisayo yokunciphisa ukukhishwa kwe-ethylene. I-Copper ibhekwa njengesikhuthazi esisebenzayo sale nqubo. Ithimba lihlanganise ukwelashwa kwe-electrochemical okushukunyiswayo ne-spectromicroscopy yesimanje ukuhlaziya izinguquko ebusweni bethusi. Ukushintshana kwama-anodic kanye nama-cathodic pulses kudala izici ezithile zekristalu kanye noshintsho ezimweni ze-oxidation, okwandisa ukusebenza kahle kokuguqulwa. Ngesikhathi se-anodic pulse, izakhiwo ezifana nephiramidi ezinezinhlangothi ezithile zakha ngokuncibilika okukhethiwe kwethusi, kanti ubuso buncibilika bube ifilimu encane ye-Cu(I). Ngesikhathi se-cathodic pulse, ingxenye engenhla kuphela yale filimu incishiswa ibe yithusi lensimbi, okudala isakhiwo esifana nesandwich sefilimu yethusi lensimbi elincane ku-underlayer ye-Cu(I). Lokhu kuhlanganiswa kwama-facets kanye nezimo ze-oxidation kukhuthaza ukukhiqizwa kwe-ethylene ne-ethanol, kanye nezindawo zensimbi, ezinezinyathelo ezisekela ukwakheka kwe-ethylene kanye nokuba khona kwethusi lensimbi kanye ne-Cu₂O okukhuthaza ukukhiqizwa kwe-ethanol. Ukuphenya ngalezi zinguquko ezingeni elincane kakhulu kunikeza ukuqonda okubalulekile kwamamodeli emfundiso kanye nokuqonda okungcono kokuziphatha kwethusi okubangela ukuguquka.
Imiphumela ivula izindlela ezintsha zezixazululo zamandla esimeme ngokusekela ukuthuthukiswa kwezindlela eziphumelelayo zokusebenzisa kabusha i-CO2 kumafutha avuselelekayo. Indlela yokwelapha engase ibe namandla ingaba nomthelela ezinqubweni zamakhemikhali ezinobungani kwemvelo futhi imele isinyathelo esibalulekile esiya kubuchwepheshe bamandla ahlanzekile.
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Funda futhi
Ungayisebenzisa kanjani kabusha i-CO2 kusuka kumagesi aphumayo | I-Pugnalom
