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
Enye yezinto ezindala kakhulu futhi ezisetshenziswa kakhulu i-MoS ₂ ifana nesithambiso esinamandla emkhathini lapho uwoyela owuketshezi namafutha enganele noma engadingeki..
Amabutho abuthakathaka e-interlayer van der Waals avumela i-S– Mo– S amashidi ukuze ushelele phezu kwelinye ngokumelana okuncane kakhulu, okuholela ekwehlisweni kwe-coefficient yokuhlikihla– ngokuvamile phakathi 0.05 futhi 0.1 ezinkingeni ezomile noma ze-vacuum.
Lokhu kuthambisa kunenzuzo ikakhulukazi emkhathini, izinhlelo ze-vacuum, kanye nemishini yokushisa ephezulu, lapho amafutha endabuko angase ahwamuke, oxidize, noma buthakathaka.
I-MoS ₂ ingasetshenziswa njengempushana eyomile, enamathela eboshwe, noma ahlakazeke emafutheni, amafutha, kanye namakhompiyutha e-polymer ukuqinisa ukumelana nokugqokwa nokunciphisa ukungqubuzana kuma-bearings, imishini, nezingcingo ezitshuzayo.
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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