1. Isakhelo seCrystal kunye ne-Slit Anisotropy
1.1 IiPolymorphs ze-2H kunye ne-1T: Ubumbini bezokwakha kunye neDijithali
(I-Molybdenum Disulfide)
Molybdenum disulfide (MoS 2) yintsimbi yoguqulo oluqhekezayo idichalcogenide (TMD) kunye nefomula yekhemikhali equka iathom enye yemolybdenum efakwe phakathi kweeathom ezimbini zesulfure kulungelelwaniso lweprismatic enezithathu., ukwenza idityaniswe ngokubambisana S– Mo– S sheets.
Ezi monolayers ezithile zifunjwe ngokuthe nkqo kwaye zibanjwe enye kwenye yimikhosi ebuthathaka ye-van der Waals, ivumela ukuchetywa kwe interlayer ngokulula kunye nokukhutshelwa phantsi ukuya kwi-atomically ebhityileyo ene-dimensional (2D) iikristale– umsebenzi woyilo oluphambili kwimisebenzi yalo eyahlukeneyo eluncedo.
I-MoS ₂ ikhona kwiintlobo ezininzi zeepolymorphic, elona nqanaba lizinzileyo le-thermodynamic linqanaba le-2H le-semiconducting (i-symmetry ene-hexagonal), apho umaleko ngamnye ubonisa umsantsa othe ngqo we ~ 1.8 I-eV kudidi lwe-monolayer olutshintshela kwi-indirect bandgap (~ 1.3 eV) kwihoseyile, into ebalulekileyo kwizicelo ze-optoelectronic.
Kwelinye icala, isigaba se-1T esine-metastable (ibhalansi ye-tetragonal) ithatha ulungelelwaniso lwe-octahedral kwaye isebenze njengomqhubi wesinyithi ngenxa yomnikelo we-electron ovela kwii-athom zesulfure., ukwenza ukuba kube nokwenzeka kwizicelo kwi-electrocatalysis kunye ne-conductive compounds.
Utshintsho lwenqanaba phakathi kwe-2H kunye ne-1T lunokunyanzeliswa ngamachiza, electrochemically, okanye ngoyilo loxinzelelo, ukubonelela ngeqonga eliqhutywayo lokuyila izixhobo ezinemisebenzi emininzi.
Amandla okuxhasa kunye neepateni ezi zigaba ngokwendawo ngaphakathi kweflake eyodwa zivula iindlela ze-heterostructures ezingaphakathi kwinqwelomoya ezinemimandla yombane eyodwa..
1.2 Iziphene, Doping, kunye neSide States
Ukusebenza kwe-MoS ezimbini kwi-catalytic kunye ne-digital applications yimibandela yomgangatho we-atomic eyaziwa kakhulu kunye ne-dopants..
Iingxaki zamanqaku azalwayo ezifana nokuvuleka kwesulfure kusebenza njengabafaki be-electron, ukuphakamisa ukuhanjiswa kohlobo lwe-n kunye nokusebenza njengewebhusayithi ezisebenzayo zokusabela kwe-hydrogen (LAKHE) ekuqhekekeni kwamanzi.
Imida yezityalo eziziinkozo kunye neengxaki zemigca zinokunqanda ukuthuthwa kweentlawulo okanye zivelise iindlela zokuqhuba zengingqi, ngokuxhomekeke kubume babo beathom.
I-doping elawulwayo kunye neentsimbi zokutshintsha (umz., Re, Nb) okanye chalcogens (umz., Se) ivumela ukulungiswa kakuhle kwesakhelo sebhendi, ugxininiso lomnikezeli, kunye ne-spin-orbit edibanisa iziphumo.
Ngokubalulekileyo, amacala e-MoS amabini nanosheets, ingakumbi intsimbi Mo-ipheliswe (10– 10) imiphetho, bonisa umsebenzi omkhulu kakhulu kune-inert basal airplane, ukukhuthaza uyilo lwe-nanostructured stimulants kunye nosetyenziso olungcono lokuvezwa komphetho.
( I-Molybdenum Disulfide)
Ezi nkqubo zineziphene zenza umzekelo wendlela ukuguqulwa kwe-atomic-level inokutshintsha iminerali eyenzeka ngokuqhelekileyo ibe yinto esebenzayo yokusebenza okuphezulu..
2. I-Synthesis kunye ne-Nanofabrication Strategies
2.1 IiNdlela zokuVelisa iifilimu ezininzi kunye neThin-Film
I-molybdenite yendalo, ifom ye-mineral ye-MoS ₂, ngokwenene isetyenziswe iminyaka njenge-lube eyomeleleyo, kodwa izicelo zanamhlanje zifuna ubunyulu obuphezulu, iintlobo ezenziweyo ezilawulwa ngokwesakhiwo.
Ukubekwa komphunga kwikhemikhali (CVD) bubuchule obuphambili bokuvelisa indawo enkulu, high-crystallinity monolayer kunye ne-mos-layer embalwa ₂ bhanyabhanya kwiisubstrates ezifana neSiO TWO/ Si, isafire, okanye iipolima eziguquguqukayo.
KwiCVD, i-molybdenum kunye ne-sulphur precursors (umz., I-MoO yesine kunye nomgubo we-S) zenziwa umphunga xa kushushu (700– 1000 °C )phantsi kweemeko ezingqongileyo ezilawulwayo, ivumela uphuhliso lomaleko-ngamaleko kunye nomlinganiselo wedomeyini enokutyibilika kunye nolungelelwaniso.
Ukukhutshwa kweMechanical (“indlela ye-scotch tape”) iyaqhubeka ukuba ngumgangatho wesampulu zomgangatho wophando, ukuvelisa ii-monolayers ezicocekileyo kakhulu ezineziphene ezisezantsi, nangona ingenayo i-scalability.
Ulwelo-kwisigaba sokuxobula, kuquka i-sonication okanye i-shear blending of mass crystals kwi-solvents okanye izisombululo ze-surfactant, yenza i-colloidal dispersions yeenanosheets ezinomaleko ambalwa alungele ukugqitywa, imidibaniso, kunye neendlela ze-inki.
2.2 Ukudityaniswa kwe-Heterostructure kunye nePhatheni yesiXhobo
Inyani enokubakho ye-MoS ₂ ivela xa idityaniswe ngqo kwi-heterostructures ethe nkqo okanye esecaleni kunye nezinye izinto ezahlukeneyo ze-2D ezifana negraphene., i-boron nitride enehexagonal (h-BN), okanye WSe ₂.
Ezi van der Waals heterostructures zenza ubeko lwezixhobo ezichanekileyo zeathom, kuquka itonela transistors, ii-photodetectors, kunye neediode ezikhupha ukukhanya (ii-LEDs), apho umrhumo we-interlayer kunye nokudluliselwa kwamandla kunokwenziwa.
Izicwangciso ze-lithographic patterning kunye ne-etching zivumela ukuveliswa kwee-nanoribhoni, amachaphaza e-quantum, kunye ne-transistors ye-field-effect (IiFET) ezinobungakanani betshaneli ukuya kumashumi eenanometers.
I-Dielectric encapsulation kunye ne-h-BN ikhusela i-MoS ₂ ekutshatyalalisweni kwendalo kunye nokunciphisa ukusasazeka kwentlawulo, ukonyusa kakhulu ukuguquguquka komnikezeli wenkonzo kunye nokhuseleko lwesixhobo.
Le nkqubela phambili yolwakhiwo ibalulekile ekutshintsheni iMoS ezimbini ukusuka kumdla walebhu ukuya kwindawo enokwenzeka kwisizukulwana esilandelayo se-nanoelectronics..
3. Iimpawu eziSebenzayo kunye neeNdlela zoMzimba
3.1 Imikhwa yeTribological kunye nokuFakwa okuqinileyo
Phakathi kwezona zicelo zindala nezihlala zihleli ze-MoS ₂ ifana nelube eyomileyo eyomileyo kwindawo egqithisileyo apho ioyile elulwelo isilela ngokufutshane.– njenge vacuum cleaner, iyatshisa, okanye iimeko ze-cryogenic.
Amandla acuthiweyo e-interlayer shear ye-van der Waals engenanto ivumela ukutyibilika ngokulula phakathi kwe-S.– Mo– S iileya, ebangela ukuba i-coefficient yokuhlikihla iyancipha njenge-0.03– 0.06 phantsi kweengxaki ezifanelekileyo.
Ukusebenza kwayo komelezwa ngakumbi kukuncamathela okuqinileyo kwiindawo ezingaphezulu zentsimbi kunye nokumelana ne-oxidation kangangoko ~ 350 ° C emoyeni, ngaphaya apho i-MoO emihlanu yokwakheka inyusa ukunxiba.
I-MoS ₂ isetyenziswa ngokubanzi kwiinkqubo ze-aerospace, impompo yomoya, kunye namacandelo ompu, ngokuqhelekileyo isetyenziswa njengokugqiba ngendlela yokutshisa, ukutshiza, okanye umanyano oluyintlanganisela kwiimatriki zepolymer.
Uphononongo lwakutsha nje lubonisa ukuba ukufuma kunokwenza buthathaka i-lubricity ngokunyusa i-interlayer bond, ukukhuthaza uphando ngokufanelekileyo kwiingubo ze-hydrophobic okanye i-hybrid lubes ukwenzela ukuzinza okungcono kokusingqongileyo.
3.2 Ingxelo yoMbane kunye ne-Optoelectronic
Njenge-semiconductor ye-gap ngqo kuhlobo lwe-monolayer, I-MoS ₂ ibonisa intsebenziswano eqinileyo yokukhanya, kunye ne-coefficients yokufunxa ngaphezulu 10 ⁵ iisentimitha ⁻¹ kunye nembuyekezo ephezulu ye-quantum kwi-photoluminescence.
This makes it ideal for ultrathin photodetectors with quick action times and broadband level of sensitivity, from visible to near-infrared wavelengths.
Field-effect transistors based on monolayer MoS ₂ demonstrate on/off ratios > 10 eight and provider wheelchairs up to 500 centimeters ²/ V · s in suspended examples, though substrate interactions usually restrict practical worths to 1– 20 cm TWO/ V · s.
Spin-valley combining, an effect of strong spin-orbit interaction and busted inversion balance, enables valleytronics– a novel paradigm for information inscribing utilizing the valley level of flexibility in momentum space.
These quantum phenomena setting MoS ₂ as a candidate for low-power logic, memory, and quantum computer aspects.
4. Applications in Power, Catalysis, kunye neeTekhnoloji ezisakhulayo
4.1 Electrocatalysis for Hydrogen Evolution Response (LAKHE)
I-MoS yesibini iye yaba lukhetho olunomtsalane olungaxabisekanga kwiplatinam kwimpendulo ye-hydrogen (LAKHE), inkqubo ebalulekileyo kwi-electrolysis yamanzi kwimveliso ye-hydrogen eluhlaza.
Ngelixa i-basal airplane i-catalytically inert, iisayithi zomphetho kunye nemisebenzi yesulfure ibonisa amandla ahambelanayo ne-hydrogen adsorption ekufutshane (ΔG_H * ≈ 0), iyafana nePt.
Ubuchule bokwenza i-nanostructuring– ezifana nokuphuhlisa phezulu nasezantsi nanosheets ngqo, iimuvi ezineziphene, okanye imixube eneziyobisi kunye Ni okanye Co– ukwandisa ubukhulu bewebhusayithi esebenzayo kunye nokuhamba kombane.
Xa idityaniswe kwii-electrode ezine-conductive zigcina njenge-carbon nanotubes okanye igraphene, I-MoS ezimbini ifezekisa ukuxinana okuphezulu okukhoyo kunye nozinzo oluhlala ixesha elide phantsi kweemeko ze-acidic okanye ezingathathi hlangothi.
Ukongezwa okongeziweyo kufunyanwa ngokuzinzisa inqanaba lentsimbi ye-1T, eyonyusa i-intrinsic conductivity kwaye iveze iiwebhusayithi ezinamandla.
4.2 Izixhobo zoMbane ze-elektroniki, Izivamvo, kunye nezixhobo zeQuantum
Ukuguquguquka koomatshini, ukungafihli, kunye nomlinganiselo ophezulu womphezulu ukuya kumthamo we-MoS ezimbini ziyenza ibe ntle kwizixhobo zombane eziguquguqukayo nezinokunxitywa.
Iitransistor, iisekethe zengqiqo, kunye nezixhobo zokukhumbula ziye zaboniswa ngokwenene kwii-substratum zeplastiki, ukuvumela izikrini zokubonisa ezigobekayo, imiboniso yezempilo, kunye neeyunithi zokuziva ze-IoT.
I-MOS EZIMBINI iiyunithi zokuva irhasi ezisekelwe kwinqanaba eliphezulu zibonisa umgangatho ophezulu wobuntununtunu KUSIBINI, NH ZIMBINI, kunye H ZIMBINI O ngenxa yokhutshelo lwebhili kwi-adsorption yemolekyuli, ngamaxesha okuphendula kuluhlu olungaphantsi lwesibini.
Kwi-quantum itekhnoloji yanamhlanje, I-MoS ibamba ezimbini ii-excitons kunye neetrions zasekhaya kumanqanaba obushushu be-cryogenic, kunye nemimandla ye-pseudomagnetic eyenziwe ngoxinzelelo inokubamba abathwali, ivumela i-emitter ye-photon enye kunye namachaphaza e-quantum.
Oku kukhula kuqaqambisa i-MoS ezimbini kungekuphela nje njengemveliso esebenzayo kodwa njengenkqubo yokujonga i-physics ebalulekileyo kwimilinganiselo encitshisiweyo..
Isishwankathelo, I-molybdenum disulfide ingumzekelo wokudityaniswa kweemveliso ezingaphelelwa lixesha zenzululwazi kunye nobunjineli bequantum.
Ukusuka kwindima yayo yakudala njengento yokuthambisa ukuya ekukhutshweni kwayo kwale mihla kwizixhobo zombane ezicekethekileyo zeathom kunye neenkqubo zamandla, I-MoS ₂ ihlala ichaza kwakhona imida yento enokwenzeka kwisitayile seemveliso ze-nanoscale.
Njenge-synthesis, ukwenziwa kwabalinganiswa, kunye nokuqhubela phambili kweendlela zokulinganisa, isiphumo sayo kwisayensi kunye nokuveliswa kwezinto ezintsha kukulungele ukwandisa nako ngcono.
5. Umboneleli
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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