Iifilimu zekhabhoni ezifana ne-graphene zizinto ezikhaphukhaphu kakhulu kodwa zinamandla kakhulu kwaye zinamandla okusetyenziswa kakuhle, kodwa zinokuba nzima ukuzenza, zihlala zifuna abasebenzi abaninzi kunye namaqhinga athatha ixesha, kwaye iindlela zibiza kakhulu kwaye azinabungozi kokusingqongileyo.
Ngenxa yokuveliswa kwenani elikhulu le-graphene, ukuze boyise ubunzima obukhoyo ekuphunyezweni kweendlela zangoku zokukhupha, abaphandi kwiYunivesithi yaseBen Gurion yaseNegev e-Israel baye baphuhlisa indlela yokukhupha i-graphene "eluhlaza" enokusetyenziswa kwiindawo ezahlukeneyo, kuquka i-optics, i-electronics, i-ecology kunye ne-biotechnology.
Abaphandi basebenzise i-mechanical dispersion ukutsala i-graphene kwi-striolite yeminerali yendalo. Bafumanise ukuba i-hypophyllite yeminerali ibonisa amathuba amahle okuvelisa i-graphene yomgangatho wemveliso kunye nezinto ezifana ne-graphene.
Umxholo wekhabhoni we-hypomphibole unokwahluka. Ngokwesiqulatho sekhabhoni, i-hypomphibole inokuba neendlela ezahlukeneyo zokusetyenziswa. Ezinye iintlobo zingasetyenziselwa iipropati zazo zokutsala, ngelixa ezinye iintlobo zineempawu zokubulala iintsholongwane.
Iimpawu zesakhiwo se-hypopyroxene zimisela ukusetyenziswa kwazo kwinkqubo yokunciphisa i-oxidation, kwaye ingasetyenziselwa ukuvelisa i-blast furnace kunye nemveliso ye-ferroalloy ye-cast (high silicon) cast iron.
Ngenxa yeempawu zayo zomzimba nezoomatshini, ubuninzi bayo, amandla ayo kunye nokumelana nokuguguleka kwayo, i-hypophyllite ikwanakho ukufunxa izinto ezahlukeneyo eziphilayo, ngoko ke ingasetyenziswa njengesixhobo sokucoca. Ikwabonise amandla okususa amasuntswana e-free radical anokungcolisa imithombo yamanzi.
I-hypopyroxene ibonisa amandla okubulala iintsholongwane nokucoca amanzi kwiintsholongwane, ii-spores, iintsholongwane ezilula kunye ne-algae eluhlaza okwesibhakabhaka. Ngenxa yeempawu zayo eziphezulu zokutsala kunye nokunciphisa, i-magnesia idla ngokusetyenziswa njengesithambisi sonyango lwamanzi amdaka.
(a) Ukwandiswa kwe-X13500 kunye (b) Umfanekiso we-TEM wokwandiswa kwe-X35000 wesampuli ye-hypophyllite esasazekileyo. (c) I-Raman spectrum ye-hypophyllite enyangiweyo kunye (d) I-XPS spectrum yomgca wekhabhoni kwi-hypophyllite spectrum
Ukukhupha iGraphene
Ukulungiselela amatye ukuze kukhutshwe i-graphene, aba babini basebenzise i-scanning electron microscope (SEM) ukuhlola ukungcola kwesinyithi esinzima kunye nokubola kweesampulu. Basebenzise nezinye iindlela zelebhu ukujonga ulwakhiwo ngokubanzi kunye nobukho bezinye iiminerali kwi-hypomphibole.
Emva kokuba kugqityiwe uhlalutyo kunye nokulungiswa kwesampulu, abaphandi bakwazile ukukhupha i-graphene kwi-diorite emva kokucubungula isampuli evela kuKarelia ngoomatshini besebenzisa isicoci se-ultrasonic sedijithali.
Ekubeni inani elikhulu leesampuli linokulungiswa kusetyenziswa le ndlela, akukho mngcipheko wongcoliseko lwesibini, kwaye iindlela zokucubungula iisampuli ezilandelayo azifuneki.
Ekubeni iimpawu ezingaqhelekanga zegraphene zaziwa ngokubanzi kuluntu olubanzi lophando lwezenzululwazi, iindlela ezininzi zokuvelisa kunye nokudibanisa ziye zaphuhliswa. Nangona kunjalo, uninzi lwezi ndlela ziinkqubo ezinamanyathelo amaninzi okanye zifuna ukusetyenziswa kweekhemikhali kunye nee-oxidizing kunye ne-reducing agents ezinamandla.
Nangona i-graphene kunye nezinye iifilimu zekhabhoni zibonakalise amandla amakhulu okusetyenziswa kwaye zaphumelela kwi-R&D, iinkqubo ezisebenzisa ezi zixhobo zisaphuhliswa. Inxalenye yomngeni kukwenza ukukhutshelwa kwe-graphene kube nexabiso eliphantsi, oko kuthetha ukuba ukufumana iteknoloji yokusasazwa efanelekileyo yeyona nto ibalulekileyo.
Le ndlela yokusasazwa okanye yokwenziwa kwezinto inzima kwaye ayilungelelanisi imeko-bume, kwaye amandla ezi teknoloji anokubangela iziphene kwi-graphene evelisiweyo, ngaloo ndlela kunciphisa umgangatho olindelekileyo we-graphene.
Ukusetyenziswa kwezicoci ze-ultrasonic kwi-graphene synthesis kususa iingozi kunye neendleko ezinxulumene neendlela zamanyathelo amaninzi kunye neekhemikhali. Ukusebenzisa le ndlela kwi-hypophyllite yendalo yeminerali kwavula indlela yendlela entsha enobuhlobo nokusingqongileyo yokuvelisa i-graphene.
Ixesha lokuthumela: Novemba-04-2021
