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 i-porous fouling layers, 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 lomaleko we-porous fouling kunye ne-graphene oxide membrane, ukuxinwa kwe-lactose kunye ne-lactose permeation flux iphezulu kakhulu kuneembumba ze-nanofiltration zorhwebo.Ngokusebenzisa i-membrane yenkxaso kunye nobukhulu be-pore ye-1 μm njenge-membrane ye-graphene oxide, ukungcoliseka okungenakuguqulwa kuphuculwe.Oku kukhokelela ekubunjweni kobume obumdaka, 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 yokuzikhethela kwezinye 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 yokuzikhethela kwezinye 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