Amafilimu e-carbon afana ne-graphene ayizinto ezilula kakhulu kodwa eziqinile kakhulu ezinamandla okusebenza amahle kakhulu, kodwa kungaba nzima ukuzikhiqiza, ngokuvamile zidinga abasebenzi abaningi kanye namasu athatha isikhathi, futhi izindlela ziyabiza futhi azinabo ubungane nemvelo.
Ngokukhiqizwa kwenani elikhulu le-graphene, ukuze kunqotshwe ubunzima obukhona ekusebenziseni izindlela zamanje zokukhipha, abacwaningi eBen Gurion University of the Negev kwa-Israyeli bathuthukise indlela yokukhipha i-graphene “eluhlaza” engasetshenziswa emikhakheni eyahlukahlukene, okuhlanganisa i-optics, i-electronics, i-ecology kanye ne-biotechnology.
Abacwaningi basebenzise ukuhlakazwa kwemishini ukukhipha i-graphene ku-striolite yemineral yemvelo. Bathole ukuthi i-hypophyllite yemineral ikhombisa amathuba amahle okukhiqiza i-graphene yezimboni kanye nezinto ezifana ne-graphene.
Okuqukethwe kwekhabhoni kwe-hypomphibole kungahluka. Ngokusho kokuqukethwe kwekhabhoni, i-hypomphibole ingaba namandla okusebenza ahlukene. Ezinye izinhlobo zingasetshenziswa ngenxa yezakhiwo zazo zokuvuselela, kanti ezinye izinhlobo zinezakhiwo zokubulala amagciwane.
Izici zesakhiwo se-hypopyroxene zinquma ukusetshenziswa kwazo enqubweni yokunciphisa i-oxidation, futhi ingasetshenziswa futhi ekukhiqizweni kwesithando somlilo kanye nokukhiqizwa kwe-ferroalloy yensimbi ephonswe nge-cast (high silicon).
Ngenxa yezakhiwo zayo zomzimba nezomshini, ubuningi bayo, amandla ayo amahle kanye nokumelana nokuguguleka, i-hypophyllite nayo inekhono lokumunca izinto ezahlukahlukene eziphilayo, ngakho-ke ingasetshenziswa njengento yokuhlunga. Iphinde yabonisa ikhono lokususa izinhlayiya zama-free radical ezingangcolisa imithombo yamanzi.
I-hypopyroxene ikhombisa ikhono lokubulala amagciwane nokuhlanza amanzi kumagciwane, ama-spores, ama-microorganisms alula kanye ne-algae eluhlaza okwesibhakabhaka. Ngenxa yezakhiwo zayo eziphezulu zokuvuselela nokunciphisa, i-magnesia ivame ukusetshenziswa njengesithasiselo sokwelapha amanzi amdaka.
(a) Ukwandiswa kwe-X13500 kanye (b) Isithombe se-TEM sokwandiswa kwe-X35000 sesampula ye-hypophyllite ehlakazekile. (c) I-Raman spectrum ye-hypophyllite ephathwe kahle kanye (d) I-XPS spectrum yomugqa wekhabhoni ku-hypophyllite spectrum
Ukukhishwa kwe-Graphene
Ukuze balungiselele amatshe ukuze kukhishwe i-graphene, laba bobabili basebenzise i-scanning electron microscope (SEM) ukuhlola ukungcola kwensimbi esindayo kanye nokugoba kwamasampula. Basebenzise nezinye izindlela zelebhu ukuhlola ukwakheka kwesakhiwo okujwayelekile kanye nokuba khona kwamanye amaminerali ku-hypomphibole.
Ngemva kokuphothulwa kokuhlaziywa nokulungiswa kwesampula, abacwaningi bakwazi ukukhipha i-graphene ku-diorite ngemuva kokucubungula isampula ku-Karelia ngomshini besebenzisa isihlanzi se-digital ultrasonic.
Njengoba inani elikhulu lamasampula lingacutshungulwa kusetshenziswa le ndlela, akukho bungozi bokungcola kwesibili, futhi izindlela zokucubungula amasampula ezilandelayo azidingeki.
Njengoba izakhiwo ezingavamile ze-graphene zaziwa kabanzi emphakathini wocwaningo lwesayensi obanzi, izindlela eziningi zokukhiqiza kanye nokuhlanganisa sezithuthukisiwe. Kodwa-ke, eziningi zalezi zindlela ziyizinqubo ezinezinyathelo eziningi noma zidinga ukusetshenziswa kwamakhemikhali kanye nama-oxidizing kanye nama-reducing agents anamandla.
Nakuba i-graphene namanye amafilimu e-carbon ebonise amandla amakhulu okusebenzisa futhi afinyelele impumelelo ye-R&D, izinqubo ezisebenzisa lezi zinto zisathuthukiswa. Ingxenye yenselele ukwenza ukukhishwa kwe-graphene kube okungabizi kakhulu, okusho ukuthi ukuthola ubuchwepheshe bokuhlakazeka obufanele kuyisihluthulelo.
Le ndlela yokusabalalisa noma yokuhlanganisa inzima futhi ayinabo ubungane nemvelo, futhi amandla alobu buchwepheshe angabangela nokukhubazeka ku-graphene ekhiqizwayo, ngaleyo ndlela kuncishiswe ikhwalithi elindelekile ye-graphene.
Ukusetshenziswa kwezihlanzi ze-ultrasonic ekwakhiweni kwe-graphene kususa izingozi nezindleko ezihambisana nezindlela zezinyathelo eziningi nezamakhemikhali. Ukusebenzisa le ndlela ku-hypophyllite yemvelo yamaminerali kwavula indlela yendlela entsha enobungani nemvelo yokukhiqiza i-graphene.
Isikhathi sokuthunyelwe: Novemba-04-2021
