1. Isakhelo seCrystal kunye ne-Slit Anisotropy
1.1 IiPolymorphs ze-2H kunye ne-1T: Ubumbini bezokwakha kunye neDijithali
(I-Molybdenum Disulfide)
Molybdenum disulfide (I-MoS ₂) yintsimbi yokutshintsha idichalcogenide (TMD) kunye nefomula yekhemikhali ebandakanya iathom enye yemolybdenum phakathi 2 iiathom zesulfure kwiprismatic sychronisation ene-trigonal, ukwenza idityaniswe ngokubambisana S– Mo– S sheets.
Ezi monolayers zabucala zifunjwe phezulu naphantsi kwaye zibanjwe kunye noxinzelelo olubuthathaka lwe-van der Waals, Ivumela ukucheba kwe-interlayer elula kunye nokukhutywa kwe-athomu ukuba ibe mncinci ngokwe-atom-dimensional (2D) iikristale– Uphawu lolwakhiwo oluphambili kwiindima zalo ezahlukeneyo zokusebenza.
I-MoS ezimbini zikhona kwiindidi ezininzi ze-polymorphic, eyona nto ikhuselekileyo thermodynamically sisigaba semiconducting 2H (ibhalansi enehexagonal), apho umaleko ngamnye ubonisa umsantsa othe ngqo we ~ 1.8 I-eV kudidi lwe-monolayer olutshintshela kwi-indirect bandgap (~ 1.3 eV) ngobuninzi, imvakalelo ebalulekileyo kwizicelo ze-optoelectronic.
Kwelinye icala, isigaba se-1T esine-metastable (umlinganiselo we-tetragonal) Yamkela i-octahedral sychronisation kwaye iziphatha njengomqhubi wesinyithi ngenxa yomnikelo we-electron ovela kwii-athom zesulfure., ukwenza izicelo kwi-electrocatalysis kunye ne-conductive composite.
Utshintsho lwesigaba phakathi kwe-2H kunye ne-1T lunokwenziwa ngekhemikhali, electrochemically, okanye ngoyilo loxinzelelo, ukubonelela ngesixokelelwano esiqhutywayo sokudala izixhobo ezinemisebenzi emininzi.
Amandla okuxhasa kunye neepateni ezi zigaba ngokwendawo ngaphakathi kweflake eyodwa zivula iindlela ze-heterostructures ezingaphakathi kwinqwelomoya ezinemimandla yombane eyahlukileyo..
1.2 Iziphene, Doping, kunye neSide States
Ukusebenza kwe-MoS ezimbini kwi-catalytic kunye ne-digital applications kunovakalelo kakhulu kwimiba yesikali se-atomic kunye nee-dopants..
Iziphene zendalo ezifana nemisebenzi yesulfure isebenza njengabanikeli be-electron, ukuphakamisa i-n-type conductivity kunye nokusebenza njengeewebhusayithi ezisebenzayo kwiimpendulo zophuhliso lwe-hydrogen (LAKHE) ekuqhekekeni kwamanzi.
Imida yezityalo eziziinkozo kunye neengxaki zemigca zinokuphazamisana neendleko zothutho okanye ziphuhlise iindlela zokuqhuba zengingqi, kuxhomekeke kulungiselelo lwabo lweathom.
Idoping elawulwayo ngeentsimbi zokutshintsha (umz., Re, Nb) okanye chalcogens (umz., Se) yenza ukulungiswa kakuhle kwesakhiwo sebhendi, ugxininiso lomnikezeli wenkonzo, kunye neziphumo zokudityaniswa kwe-spin-orbit.
Ngokubalulekileyo, imiphetho ye-MoS yeenanosheets ezimbini, ngokukodwa isinyithi i-Mo-iphelile (10– 10) macala, bonisa umsebenzi we-catalytic ophezulu kakhulu kune-inert basal airplane, ukukhuthaza uyilo lwabaqhubi be-nanostructured ngosetyenziso olungcono kakhulu lokuvezwa ngokuthe ngqo komphetho.
( I-Molybdenum Disulfide)
Ezi nkqubo zineziphene zenza umzekelo kanye indlela ukuguqulwa kwe-atomic-level inokutshintsha ngayo iminerali eyenzeka ngokwendalo ibe yimveliso eluncedo esebenza kakhulu..
2. I-Synthesis kunye ne-Nanofabrication Strategies
2.1 UBuchule kunye nobuChwephesha bokuVelisa iifilimu
I-molybdenite yendalo, uhlobo lweminerali ye-MoS ₂, isetyenziswe iminyaka njengesithambiso esomeleleyo, nangona kunjalo izicelo zanamhlanje zifuna ubunyulu obuphezulu, iifom ezenziweyo ezilawulwa ngolwakhiwo.
Ukubekwa komphunga kwikhemikhali (CVD) yeyona ndlela ibalaseleyo yokudala indawo enkulu, high-crystallinity monolayer kunye ne-mos-layer embalwa ₂ bhanyabhanya kwii-substrates ezifana ne-SiO TWO/ Si, isafire, okanye iipolima eziguquguqukayo.
KwiCVD, i-molybdenum kunye ne-sulphur precursors (umz., I-MoO yesine kunye nomgubo we-S) Iba ngumphunga xa kushushu (700– 1000 °C )kulawulo lwemimoya, ikwenza kube lula ukukhula komaleko-ngamaleko kunye nobukhulu bommandla obunokuqhutywa kunye nokuqhelaniswa.
Ukuxobula oomatshini (“indlela ye-scotch tape”) uhlala usemgangathweni kwimizekelo yebakala lophando, ukuvelisa ii-monolayers ezicocekileyo kakhulu ezineziphene ezisezantsi, nangona ingenayo i-scalability.
Ulwelo-kwisigaba sokuxobula, kuquka i-sonication okanye i-shear mixing of bulk crystals kwi-solvents okanye amayeza e-surfactant, ivelisa i-colloidal dispersions of few-layer nanosheets ezifanelekileyo kumaleko, iikhompawundi, kunye neendlela ze-inki.
2.2 I-Heterostructure Assimilation kunye ne-Tool Patterning
Ukubakho kokwenyani kwe-MoS ₂ kuvela xa kudityaniswe ngqo kwi-heterostructures ethe nkqo okanye esecaleni kunye nezinye izixhobo ze-2D ezifana negraphene., i-boron nitride enehexagonal (h-BN), okanye WSe ezimbini.
Ezi heterostructures ze-van der Waals zenza kube lula ukuyilwa kwezixhobo ezichanekileyo zeathom., equka itonela transistors, ii-photodetectors, kunye neediode ezikhupha ukukhanya (ii-LEDs), apho intlawulo ye-interlayer kunye nokudluliselwa kwamandla kunokwenziwa.
Iindlela ze-lithographic zepateni kunye ne-etching zivumela ukwenziwa kwee-nanoribhoni, amachaphaza e-quantum, kunye ne-transistors ye-field-effect (IiFET) ngobude bothungelwano ukuya kutsho kwishumi leenanometers.
I-Dielectric encapsulation kunye ne-h-BN ikhusela i-MoS ₂ ekutshatyalalisweni kwendalo kunye nokunciphisa ukusasazwa kwentlawulo, iphucula kakhulu intshukumo yomboneleli kunye nokuzinza kwegajethi.
Ezi nkqubela phambili zokwenziwa zibalulekile ekutshintsheni i-MoS ₂ ukusuka kwinzala yelebhu ukuya kwinxalenye enokwenzeka kwisizukulwana esilandelayo se-nanoelectronics..
3. Iimpawu zokuSebenza kunye neeNdlela zoMzimba
3.1 Imikhwa yeTribological kunye nokuFakwa okuqinileyo
Phakathi kwezona zicelo zindala nezihlala zihleli ze-MoS ezimbini zifana nelube eyomileyo eqinileyo kwiatmosphere apho i-oyile elulwelo ingaphumeleli.– njenge vacuum cleaner, amaqondo obushushu aphezulu, okanye iingxaki ze-cryogenic.
Ubume obuncitshisiweyo be-chear interlayer kwisithuba se-van der Waals senza lula ukutyibilika phakathi kwe-S– Mo– S iileya, ebangela ukuba i-coefficient yokuhlikihla iyancipha njenge-0.03– 0.06 phantsi kweemeko ezifanelekileyo.
Ukusebenza kwayo komelezwa ngakumbi kukuncamathela okuqinileyo kumphezulu wentsimbi kunye nokumelana ne-oxidation ukuya kuthi ga kwi ~ 350 ° C emoyeni, ngaphaya apho i-MoO ₃ ukwakheka kwandisa ukunxiba.
I-MoS ₂ iqhele ukusetyenziswa kwiinkqubo ze-aerospace, iimpompo vacuum, kunye namalungu ompu, ngokuqhelekileyo isetyenziswa njengesigqubuthelo ngokutshisa, ukutshiza, okanye umanyano oluyintlanganisela kwiimatriki zepolymer.
Uphando lwangoku lubonisa ukuba ukufuma kunokonakalisa i-lubricity ngokunyusa i-interlayer adhesion, isifundo esikhuthazayo ukuya kumaleyi e-hydrophobic okanye izinto zokuthambisa ezixubeneyo zokhuseleko olungcono lokusingqongileyo.
3.2 I-Digital kunye ne-Optoelectronic Reaction
Njenge-semiconductor ye-gap ngqo kwifom ye-monolayer, I-MoS ₂ ibonisa unxibelelwano oluluqilima lokukhanya, kunye ne-coefficients yokufunxa ngaphezulu 10 ⁵ iisentimitha ⁻¹ kunye nesivuno esiphezulu se-quantum kwi-photoluminescence.
Oku kuyenza ilunge kakhulu kwiifoto ze-ultrathin ezinexesha lokuphendula ngokukhawuleza kunye nobuntununtunu bebroadband, ukusuka kokubonakalayo ukuya kwi-infrared wavelengths.
Iitransistor ze-Findle-effect ezisekwe kwi-monolayer MoS ezimbini bonisa i-/off proportions > 10 ezisibhozo kunye nokuguquguquka komnikezeli wenkonzo malunga 500 iisentimitha ²/ V · s kwiisampulu ezinqunyanyisiweyo, nangona unxibelelwano lwesubstrate luqhele ukunqanda ukuxabiseka okusebenzayo ukuya ku-1– 20 cm ZIMBINI/ V · s.
I-Spin-valley idibanisa, impembelelo yonxibelelwano oluqinileyo lwe-spin-orbit kunye ne-busted inversion proportion, yenza ukuba kwenzeke kwi-valleytronics– umgangatho owodwa wolwazi oluchaza ukusetyenziswa kweqondo lentlambo yenkululeko kwigumbi lamandla.
Ezi mvakalelo ze-quantum zibeka i-MoS ₂ njengomgqatswa wengqiqo yamandla aphantsi, inkumbulo, kunye nezinto zekhompyuter yequantum.
4. Usetyenziso olusemandleni, Catalysis, kunye neArising Technologies
4.1 Electrocatalysis for Hydrogen Advancement Response (LAKHE)
I-MoS yesibini iye yaba yindlela ekhuthazayo engaxabisekanga kwiplatinam kwimpendulo yokuqhubela phambili i-hydrogen. (LAKHE), inkqubo ebalulekileyo kwi-electrolysis yamanzi ukwenzela imveliso ye-hydrogen enobuhlobo.
Ngelixa inqwelomoya esisiseko inert enert, Iindawo zomphetho kunye nemisebenzi yesalfure zibonisa i-adsorption ye-hydrogen esondele simahla (ΔG_H * ≈ 0), ithelekiseka nePt.
Iindlela zeNanostructuring– njengokwenza iinanosheets ezithe nkqo, iifilimu ezineziphene, okanye hybrids doped nge Ni okanye Co– sebenzisa ngokupheleleyo ubukhulu bendawo esebenzayo kunye ne-conductivity yombane.
Xa idityaniswe kwi-electrode ene-conductive igcina njenge-carbon nanotubes okanye igraphene, I-MoS ezimbini ifikelela ubukhulu obuphezulu obukhoyo kunye nokhuseleko oluhlala luhleli phantsi kweemeko ezineasidi okanye ezingathathi hlangothi.
Uphuculo olungakumbi lufezwa ngokugcina inqanaba lentsimbi ye-1T, eyonyusa intrinsic conductivity kwaye iveze iisayithi ezongezelelweyo ezisebenzayo.
4.2 Ii-Electronics eziguquguqukayo, Izivamvo, kunye nezixhobo zeQuantum
Ukuguquguquka koomatshini, ukuvuleka, kunye nomlinganiselo ophezulu womphezulu ukuya kumthamo we-MoS ezimbini ziyenza ilungele izinto zombane eziguquguqukayo nezinokunxitywa.
Iitransistor, iisekethe zengqiqo, kunye nezixhobo zememori ziye zaboniswa kwi-substratum yeplastiki, yenza izikrini zokubonisa ezinokugobeka, imiboniso yezempilo, kunye neenzwa ze-IoT.
I-MoS ₂-based sensors yegesi ibonisa uvakalelo oluphezulu kwi-NO ₂, NH EZINTATHU, kunye H ZIMBINI O ngenxa yokhutshelo lwebhili kwi-adsorption yemolekyuli, kunye namaxesha engxelo kuluhlu olungaphantsi lwesibini.
Kwi-quantum itekhnoloji yanamhlanje, I-MoS ₂ ibamba ii-excitons zendawo kunye neetrioni kumanqanaba obushushu be-cryogenic, kunye nemimandla yepseudomagnetic ebangelwa luxinzelelo inokubamba ababoneleli ngenkonzo, ivumela i-emitter ye-photon enye kunye namachaphaza e-quantum.
Oku kukhula kuqaqambisa i-MoS ezimbini hayi nje njengesixhobo esiluncedo kodwa njengenkqubo yokuphonononga i-physics ebalulekileyo kwimilinganiselo eyehlayo..
Kushwankathelo, Imolybdenum disulfide ingumzekelo wokudityaniswa kweemveliso zakudala uphando lwenzululwazi kunye noyilo lwequantum.
Ukusuka kwindima yayo yakudala njengento yokuthambisa ukuya ekuhanjisweni kwayo kwangoku kwizixhobo zombane ezicekethekileyo zeathom kunye neenkqubo zamandla., I-MoS ezimbini iyaqhubeka nokuchaza imida yento enokwenzeka kuyilo lwemathiriyeli ye-nanoscale.
Njenge-synthesis, ukwenziwa kwabalinganiswa, kunye nophuhliso lweendlela zokulinganisa, impembelelo yalo kulo lonke uphando lwezenzululwazi kunye nobuchwephesha bale mihla bubekwe ukuba bandise ngakumbi.
5. Umthengisi
I-TRUNANO ngumvelisi owaziwayo kwihlabathi jikelele we-Molybdenum Disulfide kunye nomthengisi weekhompawundi ezingaphezulu kwe. 12 iminyaka yobungcali kumgangatho ophezulu we-nanomaterials kunye nezinye iikhemikhali. Inkampani iphuhlisa izinto ezahlukeneyo zomgubo kunye neekhemikhali. Ukubonelela ngenkonzo ye-OEM. Ukuba ufuna umgangatho ophezulu weMolybdenum Disulfide, nceda uzive ukhululekile ukuqhagamshelana nathi. Unokucofa kwimveliso ukuze uqhagamshelane nathi.
Iithegi: I-Molybdenum Disulfide, nano molybdenum disulfide, MoS2
Onke amanqaku kunye nemifanekiso avela kwi-Intanethi. Ukuba kukho nayiphi na imiba ye-copyright, nceda uqhagamshelane nathi ngexesha lokucima.
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