Kwiminyaka embalwa edlulileyo, iimbrane zegraphene oxide bezisetyenziswa ikakhulu ukukhupha ityuwa emanzini olwandle kunye nokwahlula idayi. Nangona kunjalo, ii-membrane zineendlela ezininzi zokusetyenziswa, njengeshishini lokutya.
Iqela lophando elivela kwi-Global Aquatic Innovation Centre yeYunivesithi yaseShinshu liye lafunda ukusetyenziswa kwe-graphene oxide membranes kubisi. Olu hlobo lwenwebu ludla ngokwenza umaleko oshinyeneyo wobumdaka (ikhabhoni, “iinwebu zegraphene oxide zobisi olungenayo lactose” kwiinwebu zepolymer.
Vala i-graphene oxide membrane efakwe kwi-lactose kunye namanzi; shiya amafutha, iiprotheni kunye ne-macromolecules ebisi.
Iimbrane ze-graphene oxide zinenzuzo yokuvelisa iileya ze-porous fouling, ngoko ukusebenza kwazo kokucoca kunokugcinwa ngcono kuneembrane zepolymer zorhwebo. I-chemistry ekhethekileyo kunye nesakhiwo se-graphene oxide membrane sivumela ukunyusa ukungena kwe-lactose kunye namanzi, ngelixa ugxotha amafutha, iprotheni kunye nezinye iiminerali. Ke ngoko, ukuthungwa, incasa kunye nexabiso lesondlo sobisi linokugcinwa ngcono xa kuthelekiswa neefilimu zepolymer zorhwebo.
Ngenxa yolwakhiwo olukhethekileyo lwe-fouling layer kunye ne-graphene oxide membrane, i-concentration ye-lactose kunye ne-lactose permeation flux iphezulu kakhulu kune-membrane ye-nanofiltration yorhwebo. Ngokusebenzisa i-membrane yenkxaso kunye nobukhulu be-pore ye-1 μm njenge-membrane ye-graphene oxide, ukungcoliseka okungenakuguqulwa kuphuculwe. Oku kukhokelela ekubunjweni kobume obumdaka obunezimbobo, obuvumela izinga eliphezulu lokubuyisela amanzi emva kokuba ubisi luhluziwe.
Ukugqamisa ukusebenza kwayo okugqwesileyo kwe-antifouling kunye nokukhetha okuphezulu kwi-lactose, lo msebenzi wobuvulindlela ubonisa ukusetyenziswa kwe-graphene oxide membranes kwishishini lokutya, ngakumbi ishishini lobisi. Le ndlela igcina amandla amakhulu okususa iswekile kwiziselo, ngelixa igcina ezinye izithako, ngaloo ndlela inyusa ixabiso labo lezondlo.
Iimpawu eziphezulu zokuchasana nezisombululo ze-organic-rich (ezifana nobisi) zenza kube yinto efanelekileyo yokukhetha ezinye izicelo (ezifana nokucocwa kwamanzi amdaka kunye nezicelo zonyango). Iqela liceba ukuqhubeka nokuhlola ukusetyenziswa kwefilimu ye-graphene oxide.
Lo msebenzi usekwe kwiziphumo zophando zangaphambili zeqela, ezizezi, ukudalwa kweenwebu zegraphene oxide ezitshiziweyo (“I-NaCl Esebenzayo kunye nokwaliwa kwedayi ye-hybrid graphene oxide/graphene layered membranes”) yokukhutshwa kwetyuwa emanzini olwandle kwi-nanotechnology yendalo. I-membrane ibonisa ukuzinza kweekhemikhali okongeziweyo ngokongeza iileya ezimbalwa zegraphene, ngelixa ibonisa ukusebenza kokucoca okuzinzileyo emva kweentsuku ezintlanu zokusebenza. Ukongeza, indlela yokutshiza yokutshiza iyathembisa kakhulu ngokwemiqathango yokukala.
Ukugqamisa ukusebenza kwayo okugqwesileyo kwe-antifouling kunye nokukhetha okuphezulu kwi-lactose, lo msebenzi wobuvulindlela ubonisa ukusetyenziswa kwe-graphene oxide membranes kwishishini lokutya, ngakumbi ishishini lobisi. Le ndlela igcina amandla amakhulu okususa iswekile kwiziselo, ngelixa igcina ezinye izithako, ngaloo ndlela inyusa ixabiso labo lezondlo.
Iimpawu eziphezulu zokuchasana nezisombululo ze-organic-rich (ezifana nobisi) zenza kube yinto efanelekileyo yokukhetha ezinye izicelo (ezifana nokucocwa kwamanzi amdaka kunye nezicelo zonyango). Iqela liceba ukuqhubeka nokuhlola ukusetyenziswa kwefilimu ye-graphene oxide.
Lo msebenzi usekwe kwiziphumo zophando zangaphambili zeqela, ezizezi, ukudalwa kweenwebu zegraphene oxide ezitshiziweyo (“I-NaCl Esebenzayo kunye nokwaliwa kwedayi ye-hybrid graphene oxide/graphene layered membranes”) yokukhutshwa kwetyuwa emanzini olwandle kwi-nanotechnology yendalo. I-membrane ibonisa ukuzinza kweekhemikhali okongeziweyo ngokongeza iileya ezimbalwa zegraphene, ngelixa ibonisa ukusebenza kokucoca okuzinzileyo emva kweentsuku ezintlanu zokusebenza. Ukongeza, indlela yokutshiza yokutshiza iyathembisa kakhulu ngokwemiqathango yokukala.
Ixesha lokuposa: Jul-20-2021
