1. Uhlaka Olubalulekile kanye Nezimfanelo Ze-Quantum ze-Molybdenum Disulfide
1.1 I-Crystal Design kanye ne-Layered Bonding System
(I-Molybdenum Disulfide Powder)
I-Molybdenum disulfide (I-MoS YESIBILI) i-dichalcogenide yensimbi yoshintsho (I-TMD) osekuphenduke umkhiqizo wegumbi kuzo zombili izinhlelo zokusebenza zezimboni ezingaphelelwa isikhathi kanye ne-nanotechnology emisha.
Ezingeni le-athomu, I-MoS ₂ icwebezela ohlakeni olunezingqimba lapho ungqimba ngalunye luqukethe indiza yama-athomu e-molybdenum ehlanganiswe ngokuhlanganyela phakathi kwezindiza ezimbili zama-athomu esibabule., ukuthuthukisa i-S– Mo– S trilayer.
Lawa ma-trilayers abanjwe wodwa ngamabutho abuthaka e-van der Waals, okuvumela ukugunda okulula phakathi kwezingqimba ezizungezile– isakhiwo esisekela ukuthambisa kwaso okuyingqayizivele.
Isigaba esivikeleke kakhulu nge-thermodynamically yi-2H (i-hexagonal) isigaba, okuyi-semiconducting futhi ekhombisa i-bandgap eqondile ohlotsheni lwe-monolayer, ukushintshela ku-bandgap engaqondile ngobuningi.
Lo mthelela wokuboshwa kwe-quantum, lapho izakhiwo zedijithali zishintsha kakhulu ngokuminyana, yenza i-MoS ₂ uhlelo lokuklama lokucwaninga ngezinhlangothi ezimbili (2D) imikhiqizo engaphezu kwe-graphene.
Ngokolunye uhlangothi, okuncane okujwayelekile okungu-1T (i-tetragonal) isigaba siyinsimbi futhi i-metastable, ngokuvamile kukhiqizwa ngokusebenzisa amakhemikhali noma i-electrochemical intercalation, futhi inenani lenzalo yezinhlelo zokusebenza zesikhala sokugcina amandla.
1.2 Isakhiwo sebhendi yedijithali kanye nempendulo ye-Optical
Izindawo zokuhlala ezidijithali ze-MoS ₂ zincike kakhulu kubukhulu, ukwenza kube uhlelo olukhethekile lokuthola izenzakalo ze-quantum ezinhlelweni ezinobukhulu obuphansi.
Ngohlobo lwenqwaba, I-MoS ₂ isebenza njenge-semiconductor ye-bandgap engaqondile ene-bandgap cishe 1.2 eV.
Nokho, lapho kuncishiswa kuze kufike kungqimba olulodwa lwe-athomu, imithelela yokuvalelwa kwe-quantum idala ushintsho ku-bandgap eqondile yokuphathelene 1.8 eV, Itholakala endaweni ye-K yendawo yaseBrillouin.
Lolu shintsho lwenza kube lula ukutholakala kwe-photoluminescence nokuxhumana okuthembekile kwe-light-matter, ukwenza i-moS ye-monolayer ₂ ifaneleke kakhulu kumagajethi we-optoelectronic njengama-photodetectors, ama-diode akhipha ukukhanya (Ama-LED), namaseli elanga.
Amabhendi e-conduction kanye ne-valence abonisa ukuhlanganisa okubalulekile kwe-spin-orbit, okubangela i-physics encike esigodini lapho izigodi ze-K ne-K ezisemkhathini wejubane zingabhekwa ngokukhethekile kusetshenziswa ukukhanya okuyindilinga– into ebizwa ngokuthi i-valley Hall impact.
( I-Molybdenum Disulfide Powder)
Leli khono le-valleytronic livula izindlela ezintsha sha zombhalo wekhodi wolwazi kanye nokuphatha amadivaysi e-elekthronikhi ajwayelekile asuselwa ekukhokhisweni..
Ngaphezu kwalokho, I-MoS ₂ ibonisa imiphumela eqinile ye-excitonic ezingeni lokushisa lendawo ngenxa yokuhlolwa okuncishisiwe kwe-dielectric ngohlobo lwe-2D, ngamandla okubopha ama-exciton afinyelela ku-meV engamakhulu amaningana, kakhulu kunama-semiconductors ajwayelekile.
2. Amasu Wokuhlanganisa kanye Namasu Okukhiqiza Okukalayo
2.1 I-Top-Down Peeling kanye ne-Nanoflake Fabrication
Ukuhlukaniswa kwe-monolayer kanye ne-MoS yezendlalelo ezimbalwa kwaqala ngokucwecwa kwemishini, isu elifaniswa ne “Indlela ye-Scotch tape” isetshenziselwa i-graphene.
Le ndlela ibuyisela ama-flakes ekhwalithi ephezulu anamaphutha amancane kakhulu kanye nezindawo zokuhlala ezinhle kakhulu ze-elekthronikhi, iphelele ekufundeni okuyisisekelo kanye nokwakhiwa kwedivayisi yemodeli.
Noma kunjalo, i-mechanical exfoliation inqunyelwe ngokwemvelo ekulawulweni kobukhulu nohlangothi, okwenza kungafaneleki izicelo zezimboni.
Ukubhekana nalokhu, I-liquid-phase exfoliation yenziwe ngempela, lapho i-MoS two eyinqwaba isatshalaliswa kuzincibilikisi noma amakhambi enziwe nge-surfactant futhi ngokusekelwe ku-ultrasonication noma ekuxubeni kwe-shear.
Le nqubo ikhiqiza ukumiswa kwe-colloidal kwama-nanoflakes angadluliswa nge-spin-coating, ukuphrinta inkjet, noma fafaza ekugcineni, ukunika amandla izinhlelo zokusebenza zendawo enkulu njengamadivayisi kagesi ahlukahlukene kanye nezendlalelo.
Usayizi, ukuminyana, kanye nobukhulu bephutha lama-flakes akhuhliwe kuncike ekusetshenzisweni kwemibandela, ehlanganisa isikhathi sonication, ukukhetha kwe-solvent, kanye nesivinini se-centrifugation.
2.2 Ukuthuthukiswa Kwezansi Phezulu kanye Nokubekwa Kwefilimu Encane
Ngezicelo ezidinga imvunulo, amafilimu ezindawo ezinkulu, ukufakwa komhwamuko wamakhemikhali (I-CVD) empeleni igcine iyinkambo ehamba phambili yokuhlanganisa yezendlalelo ezimbili ze-premium MoS.
Ku-CVD, i-molybdenum ne-sulphur precursors– njenge-molybdenum trioxide (I-MoO ₃) kanye nempushana yesibabule– ziyahwamuka futhi zisabele kuma-substratum afudumele njenge-silicon dioxide noma isafire ngaphansi kwezindawo ezilawulwayo..
Ngokulungisa izinga lokushisa, ukucindezeleka, amanani entengo yegesi, kanye namandla endaweni ye-substrate, ososayensi bangakhulisa ama-monolayers angaguquki noma anqwabelene ama-multilayer anegama lesizinda elilawulekayo nobucwebe..
Ezinye izindlela zihlanganisa ukubekwa kwesendlalelo se-athomu (I-ALD), okunikeza ukulawula ukujiya okuphezulu ngeziqu ze-angstrom, kanye nokufaka umhwamuko obonakalayo (I-PVD), njengokukhafula, ehambisana nezindawo ezikhona zokukhiqiza i-semiconductor.
Lezi zindlela ezinwebekayo zibalulekile ekufakeni i-MoS ezimbili ezinhlelweni zezimboni zedijithali ne-optoelectronic, lapho ukuvumelana nokukhiqiza kubaluleke kakhulu.
3. I-Tribological Efficiency kanye ne-Industrial Lubrication Applications
3.1 Amasistimu Wokugcobisa Okuqinile-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 futhi 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 kuhle kakhulu kuthuthukiswa ezindaweni ezinomswakama ngenxa yokumenyezelwa kwezinhlayiya zamanzi ezisebenza njengezithambisi zamangqamuzana phakathi kwezingqimba., nakuba ukuba manzi ngokweqile kungabangela i-oxidation nokubhujiswa ngokuhamba kwesikhathi.
3.2 I-Compound Assimilation kanye Nokuthuthukiswa Kwe-Wear Resistance
I-MoS ₂ ivamise ukufakwa ensimbi, i-ceramic, kanye namatrices e-polymer ukukhiqiza izinhlanganisela zokuzithambisa nempilo yesevisi eyandisiwe.
Kuzinhlanganisela zensimbi-matrix, njenge-MoS ₂-eqiniswe nge-aluminiyamu yesisindo sokukhanya noma insimbi, isigaba sokuthambisa sehlisa ukungqubuzana emikhawulweni yokusanhlamvu futhi sivimbela ukuguga kweglue.
Kuzinhlanganisela ze-polymer, ikakhulukazi kumapulasitiki okuklama afana ne-PEEK noma inayiloni, I-MoS ₂ ithuthukisa ikhono lokuthwala futhi inciphise i-coefficient of friction ngaphandle kokufaka engcupheni ukuqina komshini.
Lezi zinhlanganisela zisetshenziswa emahlathini, izimpawu, nezinto ezitshuzayo emotweni, izimboni, kanye nezicelo zasolwandle.
Ukwengeza, Izingubo ezimbili ze-MoS ezifafazwe nge-plasma noma ezifakwe nge-sputter zisetshenziswa ezinhlelweni zamasosha kanye ne-aerospace., ehlanganisa izinjini zejethi nezindlela zesathelayithi, lapho ukwethembeka ngaphansi kwezinkinga ezimbi kakhulu kubalulekile.
4. Imisebenzi Esafufusa Kwezamandla, Ezogesi, kanye ne-Catalysis
4.1 Izicelo Ekugcineni Amandla Nokuguqulwa
Ngaphandle kwe-lubrication kanye ne-electronics, I-MoS yesibili empeleni ithole ukuvelela kubuchwepheshe besimanje bamandla, ikakhulukazi njengesikhuthazo sokuphendula kokuthuthukiswa kwe-hydrogen (WAKHE) ku-electrolysis yamanzi.
Amasayithi anamandla amakhulu alele eduze kwe-S– Mo– S izendlalelo, lapho i-molybdenum ne-athomu yesulfure engahlanganisiwe isiza ekukhangiseni kwe-proton nasekuthuthukisweni kwe-H ₂.
Ngenkathi i-MoS emibili eyinqwaba inamandla amancane kuneplatinamu, i-nanostructuring– njengokwakha ama-nanosheet aqondile noma ama-monolayers anobunjiniyela obunamaphutha– kuthuthukisa kakhulu ukushuba kwamawebhusayithi aseceleni anamandla, isondela ekusebenzeni kahle kwezivuseleli zezinto ezingavamile.
Lokhu kwenza i-MoS TWO ibe yizindleko eziphansi ezikhuthazayo, ukukhetha okuchichima komhlaba kokukhiqizwa kwe-hydrogen eluhlaza.
Esikhaleni sokugcina amandla, I-MoS two ihlolwa njenge-anode material kumabhethri e-lithium-ion kanye ne-sodium-ion ngenxa yamandla ayo aphezulu ezifundweni. (~ 670 mAh/g ye-Li ⁺) kanye nesakhiwo esinezingqimba esivumela ukuxhumana kwe-ion.
Nokho, Izinselelo ezinjengokukhula kwevolumu ngesikhathi sokuhamba ngebhayisikili kanye nokuhamba kancane kukagesi kudinga izindlela ezifana ne-carbon hybridization noma ukuthuthukiswa kwe-heterostructure ukuze kukhuliswe ukujikeleza kanye nokusebenza kwentengo.
4.2 Inhlanganisela Yamagajethi Ahlukahlukene kanye ne-Quantum
Ukuguquguquka komshini, obala, kanye nemvelo ye-MoS two semiconducting ikwenza kube ithemba elilungile lesizukulwane esilandelayo sezinto zikagesi eziguquguqukayo nezigqokekayo..
Ama-Transistors enziwe nge-monolayer MoS amabili abonisa izilinganiso eziphezulu zokuvula/ukuvala (> 10 ⁸) nokuhamba kubiza kakhulu 500 amasentimitha TWO/ V · s ngezinhlobo ezimisiwe, inika amandla amasekhethi anengqondo amancane kakhulu, izinzwa, namathuluzi enkumbulo.
Lapho ihlanganiswe nezinye izinto ezahlukahlukene ze-2D njenge-graphene (ama-electrode) kanye ne-hexagonal boron nitride (okokuhlukanisa), I-MoS ₂ izinhlobo ze-van der Waals heterostructures ezifana nemishini ye-semiconductor yendabuko kodwa enokuqonda kwesikali se-athomu.
Lawa ma-heterostructures ahlolelwa ukuthungela ama-transistor, amabhethri elanga, kanye nama-quantum emitters.
Ngaphezu kwalokho, i-spin-orbit coupling eqinile kanye ne-valley polarization ku-MoS ezimbili inikeza isakhiwo samathuluzi we-spintronic kanye ne-valleytronic, lapho ulwazi lubhaliwe ukuthi aluphethe, kodwa kumazinga we-quantum wenkululeko, okungase kuholele kumazinga ekhompuyutha anamandla aphansi kakhulu.
Ngokufingqa, I-molybdenum disulfide ibonisa ukuhlanganiswa kwamandla wezinto zakudala kanye nobuchwepheshe be-quantum-scale.
Kusukela emsebenzini wayo njengesithambiso esiqinile esihlala isikhathi eside ezindaweni ezidlulele kuya esicini sayo njenge-semiconductor kuma-electronics azacile nge-athomu kanye ne-catalyst kumasistimu wamandla ahlala njalo., I-MoS ₂ iyaqhubeka nokuchaza kabusha imingcele yesayensi yemikhiqizo.
Njengoba izindlela zokuhlanganisa ziyakhula futhi izindlela zokuhlanganisa ziyakhula, I-MoS ₂ ibekwe ukuze idlale umsebenzi oyinhloko esikhathini esizayo sokukhiqiza okuthuthukile, amandla ahlanzekile, kanye ne-quantum infotech.
Umhlinzeki
I-RBOSCHCO ingumnikezeli wempahla yamakhemikhali othembekile emhlabeni jikelele & umkhiqizi one-over 12 isipiliyoni seminyaka ekuhlinzekeni amakhemikhali ekhwalithi ephezulu kakhulu namaNanomaterials. Inkampani ithumela emazweni amaningi, njenge-USA, Canada, EYurophu, I-UAE, Iningizimu Afrika, eTanzania, Kenya, iGibhithe, eNigeria, eCameroon, Uganda, igalikuni, Mexico, I-Azerbaijan, EBelgium, eKhupro, I-Czech Republic, Brazil, eChile, E-Argentina, I-Dubai, Japan, Korea, Vietnam, Thailand, I-Malaysia, I-Indonesia, Australia,EJalimane, France, Italy, Portugal njll. Njengomkhiqizi ohamba phambili wokuthuthukiswa kwe-nanotechnology, I-RBOSCHCO ibusa imakethe. Ithimba lethu lomsebenzi ochwepheshe linikeza izixazululo eziphelele ukusiza ukuthuthukisa ukusebenza kahle kwezimboni ezihlukahlukene, dala inani, futhi ubhekane kalula nezinselele ezihlukahlukene. Uma ufuna i-molybdenum powder lubricant, sicela uthumele i-imeyili ku: [email protected]
Omaka: i-molybdenum disulfide,mos2 powder,i-molybdenum disulfide lubricant
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