1. Tsarin Crystal da Rarraba Anisotropy
1.1 2H da 1T Polymorphs: Gine-gine da Duality na Dijital
(Molybdenum Disulfide)
Molybdenum disulfide (MOS BIYU) shi ne tsaga mika mulki karfe dichalcogenide (TMD) tare da dabarar sinadarai gami da zarra molybdenum guda ɗaya wanda aka yi sandwiched a tsakanin zarra guda biyu na sulfur a cikin daidaituwar prismatic trigonal, samar da covalently bonded S– Mo– S zanen gado.
Waɗannan ƙayyadaddun na'urorin monolayers ana tattara su a tsaye kuma suna riƙe da juna ta raunanan dakarun van der Waals, yana ba da damar juzu'i mai sauƙaƙan tsaka-tsaki da fiɗawa ƙasa zuwa siraran atomically mai girma biyu (2D) lu'ulu'u– aikin gine-ginen babban ga bambance-bambancen ayyukansa masu amfani.
MoS ₂ yana samuwa a cikin nau'ikan polymorphic da yawa, Mafi tsayayyen yanayin zafi shine matakin 2H mai ɗaukar hoto (siffar hexagonal), inda kowane Layer ke nuna madaidaiciyar bandgap na ~ 1.8 eV a cikin nau'in monolayer wanda ke canzawa zuwa bandgap kai tsaye (~ 1.3 eV) wholesale, wani lamari mai mahimmanci ga aikace-aikacen optoelectronic.
A wannan bangaren, da metastable 1T lokaci (tetragonal balance) yana ɗaukar daidaitawar octahedral kuma yana aiki azaman mai sarrafa ƙarfe saboda gudummawar electron daga atom ɗin sulfur., yin shi yiwuwa ga aikace-aikace a electrocatalysis da conductive mahadi.
Canje-canje na mataki tsakanin 2H da 1T na iya haifar da sinadarai, electrochemically, ko ta hanyar ƙirar matsa lamba, samar da dandamali mai daidaitawa don zayyana na'urori masu aiki da yawa.
Ƙarfin don tallafawa da ƙirƙira waɗannan matakan a sarari a cikin keɓaɓɓen flake yana buɗe hanyoyi don tsarin heterostructure na cikin jirgin tare da keɓaɓɓen yanki na lantarki..
1.2 Lalacewar, Doping, da Jihohin Side
Ayyukan MoS guda biyu a cikin aikace-aikacen catalytic da dijital sune batutuwan sikelin sikelin atomic da kuma dopants..
Matsalolin maƙasudin asali kamar buɗewar sulfur suna aiki azaman masu ba da gudummawar lantarki, haɓaka haɓaka nau'in n-nau'i da aiki azaman rukunin yanar gizo masu aiki don halayen ci gaban hydrogen (ITA) cikin tsaga ruwa.
Iyakoki na hatsi da matsalolin layi na iya ko dai hana jigilar kuɗi ko samar da hanyoyin gudanarwa na gida, dogara ga tsarin su na atomic.
Doping da aka tsara tare da canjin karafa (misali, Re, Nb) ko chacogens (misali, Se) yana ba da damar daidaita tsarin bandeji, maida hankali mai bayarwa, da juyo-orbit hada sakamako.
Mahimmanci, bangarorin MoS biyu nanosheets, musamman karfe Mo-kare (10– 10) gefuna, yana nuna babban aiki mai kuzari fiye da inert basal jirgin sama, mai ban sha'awa tsarin nanostructured stimulants tare da yin amfani da mafi kyaun bayyanar baki.
( Molybdenum Disulfide)
Waɗannan gyare-gyaren tsarin injiniya suna misalta yadda sarrafa matakin atomic zai iya canza ma'adinai na yau da kullun zuwa babban aiki mai amfani..
2. Ƙirƙiri da Dabarun Nanofabrication
2.1 Hannun Masana'antar Fina-Finai Mai Girma da Sirara
Molybdenite na halitta, nau'in ma'adinai na MoS ₂, a zahiri an yi amfani da shi tsawon shekaru azaman lube mai ƙarfi, amma aikace-aikacen zamani na buƙatar tsafta mai girma, nau'ikan wucin gadi mai sarrafa tsari.
Tsarin tururi na sinadarai (CVD) ita ce babbar dabara don samar da babban yanki, babban-crystallinity monolayer da ƴan-Layer MoS ₂ fina-finai akan abubuwan da ke ƙasa kamar SiO TWO/ Si, saffir, ko polymers masu dacewa.
A cikin CVD, molybdenum da sulfur precursors (misali, MoO hudu da S foda) suna tururi a lokacin zafi (700– 1000 ° C )ƙarƙashin yanayin sarrafawa, ƙyale ci gaban Layer-by-Layer tare da daidaita girman yanki da daidaitawa.
Fitar injina (“scotch tef m”) ya ci gaba da zama ma'auni don samfurori-daraja, haifar da matsananci-tsabta monolayers tare da gefe aibi, ko da yake ba shi da scalability.
Bawon lokaci mai ruwa, ciki har da sonication ko karfi blending na taro lu'ulu'u a cikin kaushi ko surfactant mafita, yana haifar da tarwatsewar colloidal na ƴan nanosheets-Layer masu dacewa da kammalawa, composites, da tsarin tawada.
2.2 Haɗuwar Heterostructure da Tsarin Na'ura
Ƙimar gaskiya na MoS ₂ tana fitowa ne lokacin da aka haɗa kai tsaye cikin tsarin tsarin gyare-gyare na tsaye ko na gefe tare da wasu kayan 2D daban-daban kamar graphene., hexagonal boron nitride (h-BN), ya da Wse ₂.
Waɗannan na'urorin heterostructures na van der Waals suna ba da damar tsara daidaitattun na'urori, ciki har da tunneling transistor, masu daukar hoto, da diodes masu fitar da haske (LEDs), inda za a iya yin kuɗin interlayer da canja wurin wutar lantarki.
Dabarun ƙirƙira ƙirar lithographic da etching suna ba da damar ƙirƙira nanoribbons, ɗigon ƙididdiga, da transistor mai tasirin filin (FETs) tare da girman tashoshi zuwa dubun nanometers.
Dielectric encapsulation tare da h-BN amintaccen MoS ₂ daga lalata muhalli kuma yana rage yada kudade, mahimmanci yana haɓaka sassaucin mai bada sabis da amincin kayan aiki.
Waɗannan ci gaban gine-gine suna da mahimmanci don sauya MoS biyu daga sha'awar lab zuwa abin da zai yuwu a cikin nanoelectronics na gaba..
3. Siffofin Aiki da Tsarin Jiki
3.1 Halayen Tribological da Ƙarfin Lubrication
Daga cikin mafi tsufa kuma mafi jurewa aikace-aikace na MoS ₂ shine azaman busasshiyar lube mai ƙarfi a cikin matsanancin yanayi inda mai ya faɗi ƙasa.– kamar injin tsabtace ruwa, zafi, ko yanayin cryogenic.
Rage ƙarfin juzu'i na van der Waals mara amfani yana ba da izinin zamewa cikin sauƙi tsakanin S– Mo– S yadudduka, haifar da ƙima na shafa kamar yadda aka rage kamar 0.03– 0.06 karkashin manufa matsaloli.
Ayyukansa yana ƙara haɓaka ta hanyar mannewa mai ƙarfi zuwa wuraren saman ƙarfe da juriya ga iskar shaka kamar ~ 350 ° C cikin iska, bayan haka MoO biyar samuwar yana haɓaka lalacewa.
Ana amfani da MoS ₂ sosai a cikin tsarin sararin samaniya, iska famfo, da kayan aikin bindiga, yawanci ana amfani da shi azaman gamawa ta hanyar ƙonawa, sputtering, ko haɗin haɗin kai zuwa matrix polymer.
Bincike na baya-bayan nan ya nuna cewa zafi na iya raunana lubricity ta haɓaka haɗin haɗin gwiwa, haifar da bincike daidai a cikin rufin hydrophobic ko matasan lubes don ingantaccen yanayin muhalli.
3.2 Bayanin Lantarki da na gani
A matsayin semiconductor kai tsaye a cikin nau'in monolayer, MoS ₂ yana nuna ingantaccen hulɗar al'amarin haske, tare da sha coefficients wuce 10 ⁵ santimita ⁻¹ kuma babban adadi yana dawowa cikin haske mai haske.
Wannan yana sa ya zama manufa don masu gano hoto na ultrathin tare da lokutan aiki mai sauri da matakin faɗaɗawa na hankali, daga bayyane zuwa kusa-infrared wavelengths.
Tasirin-filin transistors dangane da monolayer MoS ₂ suna nuna ƙimar kunnawa/kashe> 10 takwas da masu ba da keken guragu har zuwa 500 santimita ²/V · s a cikin misalan da aka dakatar, ko da yake hulɗar substrate yawanci tana taƙaita ƙimar aiki zuwa 1– 20 cm BIYU/V · s.
Spin-kwari hade, tasiri mai ƙarfi na hulɗar juzu'i-orbit da ma'aunin juzu'i, taimaka valleytronics– wani sabon salo na bayanin bayanin yin amfani da matakin sassauci a cikin sararin samaniya..
Waɗannan abubuwan ƙididdigewa suna saita MoS ₂ azaman ɗan takara don dabaru masu ƙarancin ƙarfi, ƙwaƙwalwar ajiya, da kuma juzu'ai na kwamfuta.
4. Aikace-aikace a cikin Power, Catalysis, da kuma Emerging Technologies
4.1 Electrocatalysis don amsawar Juyin Halittar Hydrogen (ITA)
MoS biyu ya zama zaɓi mai ban sha'awa mara daraja ga platinum a cikin yanayin juyin halittar hydrogen (ITA), hanya mai mahimmanci a cikin ruwa electrolysis don samar da hydrogen kore.
Yayin da jirgin basal ba shi da kuzari, Shafukan gefuna da ayyukan sulfur suna nunin ingantacciyar ƙarfin tallan hydrogen na kusa (ΔG_H * ≈ 0), kama da Pt.
Dabarun nanostructuring– kamar haɓaka sama da ƙasa madaidaiciya nanosheets, fina-finai masu aibi, ko magungunan ƙwayoyi tare da Ni ko Co– kara girman kaurin gidan yanar gizo mai aiki da karfin wutar lantarki.
Lokacin da aka haɗa su cikin na'urorin lantarki tare da abubuwan sarrafawa kamar carbon nanotubes ko graphene, MoS biyu yana cika manyan abubuwan da ke akwai da kwanciyar hankali mai dorewa a ƙarƙashin yanayin acidic ko tsaka tsaki.
Ana samun ƙarin haɓakawa ta hanyar daidaita matakin ƙarfe 1T, wanda ke haɓaka haɓakawa na ciki kuma yana bayyana ƙarin gidajen yanar gizo masu kuzari.
4.2 Na'urorin Wutar Lantarki Mai Yawaita, Sensors, da na'urorin Quantum
A inji sassauci, bayyana gaskiya, kuma girman girman-zuwa-girma na MoS biyu ya sa ya zama mai kyau ga na'urorin lantarki masu sassauƙa da sawa.
transistor, dabaru da'irori, kuma an nuna kayan aikin ƙwaƙwalwar ajiya a kan ƙananan filastik, kyale allon nunin lanƙwasa, lafiya nuni, da na'urori masu ji na IoT.
MoS TWO na tushen gano iskar gas yana nuna babban matakin hankali ga BABU BIYU, NH BIYU, da H TWO O a sakamakon canja wurin lissafin akan tallan kwayoyin halitta, tare da lokutan amsawa a cikin tsararru na biyu.
A cikin kididdigar fasahar zamani, MoS guda biyu runduna sun ware excitons da trions a matakan zazzabi na cryogenic, kuma filayen pseudomagnetic da ke haifar da zuriya na iya kama masu dako, yana ba da damar masu fitar da hotuna guda ɗaya da ɗigon ƙima.
Waɗannan haɓakar suna haskaka MoS biyu ba kawai azaman samfuri mai aiki ba amma azaman tsarin bincika mahimman ilimin kimiyyar lissafi a cikin ƙananan ma'auni..
a takaice, molybdenum disulfide yana misalta haɗakar kimiyyar samfuran maras lokaci da injiniyan ƙididdiga.
Daga tsohuwar rawar da yake takawa a matsayin abu mai mai zuwa sakin sa na zamani a cikin na'urorin lantarki masu sirara da tsarin wutar lantarki, MoS ₂ ya rage don sake fasalta iyakokin abin da zai yiwu a cikin salon samfuran nanoscale.
Kamar yadda kira, halayyar, da kuma ci gaban dabarun assimilation, Tasirinsa a fadin kimiyya da kirkire-kirkire yana shirin fadada shi ma da kyau.
5. Mai bayarwa
TRUNNANO sanannen masana'anta ne na Molybdenum Disulfide kuma mai samar da mahadi fiye da 12 shekaru na gwaninta a cikin mafi ingancin nanomaterials da sauran sunadarai. Kamfanin yana haɓaka nau'ikan kayan foda da sinadarai. Samar da sabis na OEM. Idan kana buƙatar Molybdenum Disulfide mai inganci, don Allah a ji daɗin tuntuɓar mu. Kuna iya danna samfurin don tuntuɓar mu.
Tags: Molybdenum Disulfide, nano molybdenum disulfide, MoS2
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