1. Isakhelo esibalulekileyo kunye neeMlunga zeQuantum zeMolybdenum Disulfide
1.1 Uyilo lweCrystal kunye neNkqubo yeBonding
(I-Molybdenum Disulfide Powder)
Molybdenum disulfide (MoS 2) lutshintsho metal dichalcogenide (TMD) eye yaba yimveliso yembombo kuzo zombini izicelo zamashishini ezingaphelelwa lixesha kunye ne-nanotechnology entsha.
Kwinqanaba leathomu, I-MoS ₂ ikhazimlisa kwisakhelo esimaleko apho umaleko ngamnye unenqwelomoya yee-athom zemolybdenum ezidityaniswe ngokudibeneyo phakathi kweenqwelomoya ezimbini zeeathom zesulfure., ukuphuhlisa i-S– Mo– S trilayer.
Ezi trilayers zibanjwa enye kwenye yimikhosi ebuthathaka ye-van der Waals, ukwenza ukucheba okulula phakathi kweeleya ezijikelezileyo– isakhiwo esixhasa ukuthambisa kwaso okukhethekileyo.
Esona sigaba sikhuselekileyo se-thermodynamically yi-2H (ihexagonal) isigaba, eyi-semiconducting kwaye ibonisa i-bandgap ngqo kudidi lwe-monolayer, ukutshintshela kwi-indirect bandgap ngobuninzi.
Le mpembelelo yokubanjwa komyinge, apho iipropati zedijithali zitshintsha kakhulu ngokuxinana, yenza i-MoS ₂ inkqubo yoyilo yokuphanda i-dimensional (2D) iimveliso ezingaphaya kwegraphene.
Kwelinye icala, isiqhelo esingaphantsi 1T (i-tetragonal) isigaba yintsimbi kwaye i-metastable, iveliswa ngokwesiqhelo ngokusebenzisa imichiza okanye i-electrochemical intercalation, kunye nesantya senzala kwizicelo ze-catalytic kunye neendawo zokugcina amandla.
1.2 I-Digital Band Structure kunye ne-Optical Feedback
Iipropati zokuhlala zedijithali ze-MoS ₂ zixhomekeke kakhulu kubukhulu, ukwenza kube yinkqubo ekhethekileyo yokufumanisa i-quantum phenomena kwiinkqubo eziphantsi-dimensional.
Kuhlobo oluninzi, I-MoS ₂ isebenza njenge-semiconductor ye-bandgap engathanga ngqo kunye ne-bandgap 1.2 eV.
Nangona kunjalo, xa ucuthwa ukuya kumaleko weathom enye, Iimpembelelo zokuvalelwa komyinge zibangela inguqu kumsantsa othe tye we malunga 1.8 eV, ime kwindawo ye-K yommandla weBrillouin.
Olu tshintsho lwenza kube lula ukuba kubekho i-photoluminescence eyomeleleyo kunye nonxibelelwano oluthembekileyo lokukhanya, ukwenza i-moS ye-monolayer ₂ ifaneleke kakhulu kwiigajethi ze-optoelectronic ezifana ne-photodetectors, iidiode ezikhupha ukukhanya (ii-LEDs), kunye neeseli zelanga.
Iibhendi zokuqhuba kunye ne-valence zibonisa ukudibanisa okubalulekileyo kwe-spin-orbit, ebangela i-physics exhomekeke entlanjeni apho iintlambo ze-K kunye ne-K kwindawo ekhawulezayo zinokuhoywa ngokukodwa ekusebenziseni ukukhanya okujikelezayo okujikelezayo.– isenzeko ekubhekiselwa kuso njengempembelelo yeHolo yeNtlambo.
( I-Molybdenum Disulfide Powder)
Obu buchule be-valleytronic buvula iindlela ezintsha kraca zolwazi lwe-encoding kunye nokuphatha izixhobo zombane zesiqhelo ezisekelwe kwintlawulo..
Ngaphaya koko, I-MoS ₂ ibonisa iziphumo eziqinileyo ze-excitonic kumgangatho weqondo lokushisa ngenxa yokunciphisa ukuhlolwa kwe-dielectric kuhlobo lwe-2D, kunye namandla okubopha i-exciton afikelela kumakhulu aliqela meV, kakhulu kunezo zemiconductors eqhelekileyo.
2. IiNdlela zokuSebenza kunye nobuChwephesha beMveliso eScalable
2.1 I-Top-Down Peeling kunye ne-Nanoflake Fabrication
Ukubekwa bucala kwe-monolayer kunye ne-MoS ezimbini zomaleko ziqale ngokukhutshelwa komatshini, iqhinga elithelekiseka ne “Indlela yeScotch tape” isetyenziselwa igraphene.
Le ndlela ibuyisela iiflakes ezikumgangatho ophezulu ezineziphene ezincinci kunye nezakhiwo ezibalaseleyo zokuhlala ze-elektroniki, igqibelele kwisifundo esisisiseko kunye nokwakhiwa kwesixhobo somzekelo.
Nangona kunjalo, ukukhutshwa ngoomatshini kunqunyelwe ngokwendalo ekulinganiseni kunye nolawulo lobungakanani becala, iyenza ingafaneleki kwizicelo zamashishini.
Ukulungisa oku, ulwelo-kwisigaba sokukhukula sele kuphuhlisiwe, apho isambuku se-MoS ezimbini sisasazwa kwizinyibilikisi okanye amayeza e-surfactant kwaye ngokusekwe kwi-ultrasonication okanye kwi-chear blending.
Obu buchule buvelisa ukunqunyanyiswa kwe-colloidal yee-nanoflakes ezinokuhanjiswa nge-spin-coating, ushicilelo lwe-inkjet, okanye ukugqiba ukutshiza, ukwenza usetyenziso lwendawo enkulu njengezixhobo zombane eziguquguqukayo kunye neeleya.
Ubungakanani, ukuxinana, kunye nobukhulu besiphako seeflakes ezikhutshiweyo zixhomekeke kwiikhrayitheriya zokusetyenzwa, ebandakanya ixesha le-sonication, ukhetho lwe-solvent, kunye nesantya se-centrifugation.
2.2 Uphuhliso olusezantsi-Phezulu kunye ne-Thin-Film Deposition
Ngezicelo ezidinga impahla, iifilimu zendawo enkulu, ukubekwa komphunga kwikhemikhali (CVD) igqibele ngokuba yeyona khosi yokudityaniswa kweprimiyamu yeMoS ezimbini.
KwiCVD, i-molybdenum kunye ne-sulphur precursors– njenge molybdenum trioxide (I-MoO ₃) kunye nomgubo wesulfure– ziyajika zibe ngumphunga kwaye zisabele kwiisubstratum ezifudumeleyo njengesilicon dioxide okanye isafire phantsi kweemeko ezingqongileyo ezilawulwayo..
Ngokulungisa iqondo lobushushu, uxinzelelo, amaxabiso ojikelezo lwerhasi, kunye namandla ommandla we-substrate, Izazinzulu zinokukhula rhoqo ii-monolayers okanye zifumbe ii-multilayers ezinegama lesizinda esilawulekayo kunye nokukhanya.
Iindlela ezizezinye ziquka ukubekwa komaleko weatom (I-ALD), ebonelela ngolawulo lobukhulu obuphezulu kwidigri ye-angstrom, kunye nokubekwa komphunga obonakalayo (PVD), njengokutshiza, ehambelana nezixhobo ezikhoyo zokuvelisa i-semiconductor.
Ezi ndlela zinokwehla zibalulekile ekubandakanyeni i-MoS ezimbini kwiinkqubo zedijithali kunye ne-optoelectronic yoshishino, apho imvisiswano kunye nokuveliswa kwakhona kubaluleke kakhulu.
3. I-Tribological Efficiency kunye ne-Industrial Lubrication Applications
3.1 Iinkqubo zokuthambisa iSolid-State
One of the oldest and most extensive uses MoS ₂ is as a strong lubricant in atmospheres where fluid oils and oils are inadequate or unwanted.
The weak interlayer van der Waals forces allow the S– Mo– S sheets to slide over one another with very little resistance, resulting in a really reduced coefficient of rubbing– normally in between 0.05 kwaye 0.1 in dry or vacuum problems.
This lubricity is particularly beneficial in aerospace, vacuum systems, and high-temperature equipment, where traditional lubricants might vaporize, oxidize, or weaken.
MoS ₂ can be applied as a dry powder, bound coating, or dispersed in oils, greases, and polymer compounds to boost wear resistance and minimize friction in bearings, equipments, and gliding calls.
Ukusebenza kwayo komelezwa ngakumbi kwindawo efumileyo ngenxa yokufakwa kwamasuntswana amanzi asebenza njengezithambisi zemolekyuli phakathi kweeleya., nangona ubumanzi obugqithisileyo bunokubangela i-oxidation kunye nokutshatyalaliswa kwexesha.
3.2 I-Compound Assimilation kunye nokuPhuculwa kokuNxitywa kwe-Wear Resistance
I-MoS ₂ isoloko ifakwe kwisinyithi, ceramic, kunye ne-polymer matrices ukuvelisa iikhompawundi zokuzithambisa kunye nobomi benkonzo eyandisiweyo.
Kwii-metal-matrix composites, njenge-MoS ₂-eyomeleziweyo yobunzima be-aluminium okanye intsimbi, isigaba se-lubricant sehlisa ukukhuhlana kwimida yeenkozo kwaye sinqanda ukuguga kweglue.
Kwiingxube zepolymer, ngokukodwa kwiiplastiki zoyilo ezifana ne-PEEK okanye inayiloni, I-MoS ₂ iphucula amandla okuthwala umthwalo kunye nokunciphisa i-coefficient of friction ngaphandle kokufaka ingozi enkulu kwi-mechanical stamina..
Ezi khompawundi zisetyenziswa bushings, amatywina, kunye nezinto ezibhabhayo kwimoto, ishishini, kunye nezicelo zaselwandle.
Ukongeza, I-plasma etshizwe okanye i-sputter-deposit MoS ezimbini zokugquma zisetyenziswa kumkhosi kunye ne-aerospace systems., equka iinjini zejethi kunye neendlela zesathelayithi, apho ukuthembeka phantsi kweengxaki ezinzima kubalulekile.
4. Imisebenzi esakhulayo kuMandla, Electronics, kunye neCatalysis
4.1 Izicelo kuGcino lwaMandla kunye noGuquko
Ngaphandle kokuthambisa kunye ne-elektroniki, I-MoS yesibini ifumene ukuvelela kubuchwephesha banamhlanje bamandla, ngakumbi njengento evuselela impendulo yophuhliso lwe-hydrogen (LAKHE) kwi-electrolysis yamanzi.
Iziza ezinamandla zilele ikakhulu ecaleni kwe-S– Mo– S iileya, apho imolybdenum elungelelanisiweyo kunye neeathom zesulfure zincedisa kwiproton adsorption kunye nophuhliso lwe-H ₂.
Ngelixa isambuku se-MoS ezimbini zinamandla amancinci kuneplatinam, nanostructuring– njengokuphuhlisa iinanosheets ezithe nkqo okanye ii-monolayers ezineziphene– kwandisa kakhulu ubukhulu beewebhusayithi ezisecaleni ezinamandla, ukusondela ekusebenzeni kwezivuseleli zezinto ezinqabileyo zomhlaba.
Oku kwenza iMoS TWO ibe yindleko ephantsi ekhuthazayo, ukhetho oluninzi lomhlaba kwimveliso ye-hydrogen eluhlaza.
Kwindawo yokugcina amandla, I-MoS ezimbini ijongwa njenge-anode imathiriyeli kwi-lithium-ion kunye neebhetri ze-sodium-ion ngenxa yobuchule bayo obuphezulu bezemfundo. (~ 670 mAh/g kaLi ⁺) kunye nesakhiwo esinemaleko esenza ukuba i-ion idibane.
Nangona kunjalo, Imiceli mngeni efana nokukhula komthamo ngexesha lokuhamba ngebhayisekile kunye nokuhamba kombane okuncinci okudinga iindlela ezifana nekhabhon hybridization okanye uphuhliso lwe-heterostructure ukonyusa i-cyclability kunye nokusebenza kwexabiso..
4.2 Ukudityaniswa kwiiGajethi eziNgcono kunye neQuantum
Ukuguquguquka koomatshini, ukungafihli, kunye nobume be-MoS ezimbini buyenza ibe lithemba elilelona lilungileyo lesizukulwana esilandelayo esibhetyebhetye kunye nezixhobo zombane ezinxitywayo..
Iitransistors ezenziwe kwi-monolayer ye-MoS ezimbini zibonisa umlinganiselo ophezulu wokuvula / wokuvala (> 10 ⁸) kunye nokushukumiseka kuxabisa kangangoko 500 iisentimitha ZIMBINI/ V · s kwiintlobo ezixhonyiweyo, inika amandla iisekethe zelogic ezibhityileyo, abenzi boluvo, kunye nezixhobo zokukhumbula.
Xa idityaniswe nezinye izinto ezahlukeneyo ze-2D ezifana negraphene (ngenxa electrode) kunye ne-hexagonal boron nitride (ukwenzela ukugquma), I-MoS ₂ iintlobo ze-van der Waals heterostructures ezifana nezixhobo ze-semiconductor zemveli kodwa zichaneke kwisikali se-athom.
Ezi heterostructures ziyaphononongwa ukuze kuqhutywe itonela iitransistor, iibhetri zelanga, kunye ne-quantum emitters.
Ngaphezu koko, udibaniso olomeleleyo lwe-spin-orbit kunye ne-valley polarization kwi-MoS ezimbini zibonelela ngesakhiwo sezixhobo ze-spitronic kunye ne-valleytronic, apho ulwazi lubhalwe ukuba aluphathi, ukanti kumanqanaba omyinge wenkululeko, enokukhokelela kwimigangatho yecomputing yamandla asezantsi kakhulu.
Kushwankathelo, I-molybdenum disulfide ibonisa ukudityaniswa kwamandla ezinto zakudala kunye neteknoloji ye-quantum-scale.
Ukusuka kumsebenzi wayo njengesithambiso esomeleleyo esihlala ixesha elide kwindawo egqithisileyo ukuya kwindawo yayo njenge-semiconductor kwi-atomically thin electronics kunye ne-catalyst kwiinkqubo zamandla ezihlala zihleli., I-MoS ₂ iyaqhubeka nokuchaza kwakhona imida yeemveliso zesayensi.
Njengoko iindlela zokudibanisa zikhula kunye neendlela zokudibanisa zikhula, I-MoS ₂ ibekwe ukuba idlale umsebenzi ophambili kwixesha elizayo lemveliso ephezulu, amandla acocekileyo, kunye ne-quantum infotech.
Umboneleli
I-RBOSCHCO ngumboneleli othembekileyo wehlabathi jikelele wezinto zekhemikhali & umenzi nge over 12 iminyaka yamava ekuboneleleni ngeekhemikhali ezikumgangatho ophezulu kunye neeNanomaterials. Inkampani ithumela kumazwe amaninzi, njenge-USA, Khanada, IYurophu, I-UAE, Mzantsi Afrika, Thanzaniya, Khenya, Jiphethe, Nayijeriya, Khameruni, Yuganda, Thekhi, Mekhsikho, Azerbayijani, Bheljiyam, Sayiprasi, Umphakathi waseCzech, Brazil, Tshile, Ajentina, Dubai, Japhan, eKorea, Viyethnam, Thayilendi, Maleyishiya, Indoneshiya, Ostreliya,Jemani, Fransi, ElamaTaliyane, IPortugal njl. Njengomvelisi ophambili wophuhliso lwe-nanotechnology, I-RBOSCHCO iyongamela imarike. Iqela lethu lomsebenzi weengcali libonelela ngezisombululo ezigqibeleleyo zokunceda ukuphucula ukusebenza kakuhle kwamashishini ahlukeneyo, yenza ixabiso, kwaye umelane ngokulula nemingeni eyahlukeneyo. Ukuba ukhangela i-molybdenum powder lubricant, nceda uthumele i-imeyile ku: [email protected]
Iithegi: molybdenum disulfide,mos2 umgubo,i-molybdenum disulfide lubricant
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