I -MXene ye-nanomaterial isetshenziswa kubuchwepheshe bebhethri noma njengesithambisi esisebenza kahle kakhulu. Kuze kube manje, ukukhiqizwa kwayo kukhiqize imikhiqizo yemfucuza enobuthi. Abacwaningi e-TU Wien bathole izindlela ezintsha zokunciphisa le mfucuza.
Ingenye yezindlela ezibaluleke kakhulu kusayensi yezinto zokwakha: izinto zokwakha ezihlanganisa ungqimba olulodwa kuphela lwama-athomu, okuthiwa "izinto ze-2D," ngokuvamile zikhombisa izakhiwo ezihluke ngokuphelele kunezendlalelo eziwugqinsi zama-athomu afanayo. Lesi siqondiso socwaningo saqala nge-graphene yezinto eziwine uMklomelo kaNobel. Manje, i-TU Wien, kanye nezinkampani i-CEST kanye ne-AC2T, icwaninga, phakathi kwezinye izinto, ikilasi lezinto ezaziwa ngokuthi ama-MXenes (eliphinyiselwa: maxenes), ahlanganisa ngokuyinhloko i-titanium ne-carbon.
Zinezici ezizwakala zicishe ziyisimangaliso: Zingasetshenziselwa ukuvikela amaza kagesi, ukugcina amandla, noma izinzwa ezintsha. Abacwaningi e-Vienna University of Technology bathola ukuthi bafaneleka ngendlela emangalisayo njengezithambisi zesifunda esiqinile, ngisho nangaphansi kwezimo ezinzima kakhulu, njengalezo ezitholakala kubuchwepheshe bomkhathi. Inkinga kuphela ukuthi ukukhiqizwa kwalawa ma-MXenes kwakubhekwa njengengozi kakhulu futhi enobuthi. Kodwa manje sekutholakele indlela entsha: Esikhundleni se-asidi enobuthi, basebenzisa ugesi. Indlela entsha yokuhlanganisa manje isishicilelwe kujenali eyaziwayo "Encane."
"Ukuze ukhiqize i-MXene, okokuqala udinga lokho okubizwa ngokuthi izigaba ze-MAX. Lezi yizinto ezingase zibe nezingqimba ze-aluminium, i-titanium, ne-carbon, isibonelo, "kuchaza u-Pierluigi Bilotto ovela eqenjini locwaningo lwe-Tribology e-Institute of Engineering Science and Product Development e-TU Wien. "Phambilini, i-hydrofluoric acid yayisetshenziselwa ukukhipha i-aluminium, okuholela ohlelweni lwezendlalelo ezincane ze-athomu ezingakwazi ukuhamba ngokumelene nomunye ngokumelana okuncane kakhulu. Lokhu kwenza lawa ma-MXenes abe yi-lubricant enkulu."
Kodwa ukuphatha i-hydrofluoric acid akuwona umsebenzi olula. Inobuthi futhi ilimaza imvelo, futhi kunemithetho eqinile elawula ukuphathwa kwayo. Idinga amathuluzi akhethekile, abizayo aselabhorethri, futhi ikhiqiza imfucuza edinga ukulahlwa okuyinkimbinkimbi. "Lesi kube yisizathu esenza ukuthi i-MXenes ingakafinyeleli impumelelo enkulu embonini," kusho uPierluigi Bilotto. "Kunzima ukwakha kabusha inqubo enjalo ngezinga lezimboni; izinkampani eziningi ziyasibalekela lesi sinyathelo."
Ngakho u-Pierluigi Bilotto wazimisela ukuthola indlela engcono, kanye noProf. Carsten Gachot kanye noProf. Markus Valtiner (TU Vienna), u-Markus Ostermann wase-CEST e-Wiener Neustadt, u-Marko Pjlievic wase-AC2T, nabanye. "I-Electrochemistry inikeza enye indlela yokudiliza amabhondi e-aluminium esigabeni se-MAX," kusho u-Pierluigi Bilotto. "Lapho usebenzisa i-voltage kagesi, amandla kagesi asebenza esigabeni se-MAX, esingabangela ukusabela kwamakhemikhali ezindaweni ezingaphezulu. Ngokulungisa i-voltage ngendlela efanele, singakwazi ukuhlanganisa ukusabela ukuze kukhishwe ama-athomu e-aluminium kuphela, okushiya i-MXenes ye-electrochemical njengomkhiqizo wokugcina."
Ithimba lithole ukuthi indlela ekhetheke kakhulu ye-electrochemical ingathuthukisa i-electrochemical etching kanye nekhwalithi isiyonke ye-MXene: ama-pulses amanje anethamo ngokunembile. Nakuba ukusebenza kabusha kwangaphezulu kuvame ukwehla kakhulu ngemva kwesikhathi esifushane, ama-pulse amanje amafushane ezintweni zesigaba se-MAX adala amabhamuza amancane e-hydrogen, ahlanza ngokuphindaphindiwe futhi enze indawo engaphezulu isebenze. Lokhu kuvumela ukusabela kwe-electrochemical ukuthi kuqhubeke isikhathi eside, ukukhiqiza inani elikhulu le-MXene.
Umkhiqizo owumphumela wabe usuhlaziywa kabanzi - izakhiwo zawo okungenani zilungile njengalezo ze-MXenes ezake zakhiqizwa kusetshenziswa i-hydrofluoric acid. "Inhloso yami ukwenza ukukhiqizwa kwama-MXenes kube lula kakhulu. Kufanele kwenzeke kuwo wonke amakhishi," kusho uPierluigi Bilotto. "Futhi sisondelene kakhulu."
Ulwazi mayelana ne-nanotechnology
I-Nanotechnology: Amathuba amaningi, ubungozi obungaziwa - Deutsches Ärzteblatt
Funda futhi
Ukuphumelela kwenguquko kumabhethri emoto kagesi | I-Pugnalom
