1. Tsarin Crystal da Rarraba Anisotropy
1.1 2H da 1T Polymorphs: Gine-gine da Duality na Dijital
(Molybdenum Disulfide)
Molybdenum disulfide (MoS ₂) Dichalcogenide ne mai tsaga motsi (TMD) tare da tsarin sinadarai wanda ya ƙunshi zarra na molybdenum guda ɗaya wanda aka yi tsakanin 2 sulfur zarra a cikin aiki tare da trigonal prismatic synchronization, samar da covalently bonded S– Mo– S zanen gado.
Wadannan masu zaman kansu masu zaman kansu an tattara su sama da ƙasa kuma suna riƙe da juna ta hanyar raunin van der Waals masu rauni, ba da damar sauƙaƙan juzu'in tsaka-tsakin tsaka-tsaki da fiɗa zuwa atomically siriri mai girma biyu (2D) lu'ulu'u– Siffar tsarin babban ga ayyuka daban-daban na aiki.
MoS biyu suna wanzu a cikin nau'ikan polymorphic da yawa, Mafi amintaccen yanayin zafi shine lokacin 2H mai ɗaukar lokaci (ma'aunin 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) cikin girma, abin mamaki mai mahimmanci ga aikace-aikacen optoelectronic.
A wannan bangaren, da metastable 1T lokaci (tetragonal rabo) yana rungumar daidaitawar octahedral kuma yana aiki azaman madugu na ƙarfe saboda gudummawar electron daga atom ɗin sulfur, kunna aikace-aikace a electrocatalysis da conductive composites.
Canje-canjen lokaci tsakanin 2H da 1T na iya haifar da sinadarai, electrochemically, ko ta hanyar ƙirar damuwa, samar da tsarin daidaitawa don ƙirƙirar na'urori masu aiki da yawa.
Ƙarfin don tallafawa da ƙirƙira waɗannan matakan a sarari a cikin keɓaɓɓen ɓangarorin yana buɗe hanyoyi don tsarin heterostructure na cikin jirgin tare da keɓaɓɓen yanki na lantarki..
1.2 Lalacewar, Doping, da Jihohin Side
Ingancin MoS biyu a cikin aikace-aikacen catalytic da dijital yana da matukar damuwa ga lamuran sikelin atomic da dopants..
Maƙasudin ma'ana kamar su ayyukan 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 martanin haɓakar hydrogen (ITA) cikin tsaga ruwa.
Iyakokin hatsi da matsalolin layi na iya kawo cikas ga jigilar farashi ko haɓaka hanyoyin gudanarwa na cikin gida, dangane da saitin atomic ɗin su.
Doping da aka tsara tare da karafa masu motsi (misali, Re, Nb) ko chacogens (misali, Se) yana ba da damar daidaita tsarin band ɗin, maida hankali mai bada sabis, da sakamakon jujjuyawar juzu'i.
Mahimmanci, gefuna na MoS biyu nanosheets, musamman karfe Mo-kare (10– 10) bangarorin, yana nuna babban aiki mai kuzari fiye da inert basal jirgin sama, yana ƙarfafa shimfidar gyare-gyaren nanostructured direbobi tare da yin amfani da mafi kyawun fa'ida kai tsaye.
( Molybdenum Disulfide)
Waɗannan gyare-gyaren tsarin injiniya suna misalta daidai yadda sarrafa matakin atomic zai iya canza ma'adinan da ke faruwa ta zahiri zuwa samfur mai fa'ida mai fa'ida..
2. Ƙirƙiri da Dabarun Nanofabrication
2.1 Dabarun Masana'antar Fina-Finai Mai Girma da Sirara
Molybdenite na halitta, nau'in ma'adinai na MoS ₂, an yi amfani da shi tsawon shekaru azaman mai mai ƙarfi mai ƙarfi, duk da haka aikace-aikacen zamani na buƙatar tsafta mai girma, siffofin wucin gadi na tsarin sarrafawa.
Tsarin tururi na sinadarai (CVD) ita ce babbar dabara don ƙirƙirar babban yanki, monolayer high-crystallinity monolayer da ƴan-Layer MoS ₂ fina-finai akan madogara kamar SiO TWO/ Si, saffir, ko polymers masu sassauƙa.
A cikin CVD, molybdenum da sulfur precursors (misali, MoO hudu da S foda) ana fitar da su a lokacin zafi (700– 1000 ° C )a cikin yanayin sarrafawa, yana ba da damar haɓakar Layer-by-Layer tare da girman yanki mai daidaitawa da daidaitawa.
Bawon injina (“scotch tef m”) ya kasance mizanin misalan bincike-aji, 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 hadawa na girma lu'ulu'u a cikin kaushi ko surfactant magunguna, yana samar da tarwatsewar colloidal na ƴan nanosheets-Layer masu dacewa da yadudduka, mahadi, da tsarin tawada.
2.2 Haɗin Haɓaka Tsarin Haɓaka da Tsarin Kayan aiki
Haƙiƙanin yuwuwar MoS ₂ yana tasowa lokacin da aka haɗa kai tsaye cikin sifofin heterostructures na tsaye ko na gefe tare da sauran kayan 2D kamar graphene, hexagonal boron nitride (h-BN), ko WSe biyu.
Waɗannan na'urori na van der Waals suna ba da damar ƙirƙira madaidaicin na'urori masu atom., wanda ya kunshi tunneling transistor, masu daukar hoto, da diodes masu fitar da haske (LEDs), inda za a iya yin cajin interlayer da canja wurin wutar lantarki.
Tsarin lithographic da hanyoyin etching suna ba da damar kera nanoribbons, ɗigon ƙididdiga, da transistor mai tasirin filin (FETs) tare da tsawon cibiyar sadarwa zuwa dubun nanometers.
Dielectric encapsulation tare da h-BN amintaccen MoS ₂ daga lalata muhalli kuma yana rage tarwatsa caji, ƙwaƙƙwaran haɓaka motsi na mai bada da kwanciyar hankali na na'urar.
Waɗannan nasarorin masana'antar suna da mahimmanci don sauya MoS ₂ daga sha'awar lab zuwa wani sashi mai yuwuwa a cikin nanoelectronics na gaba..
3. Halayen Aiki da Tsarin Jiki
3.1 Halayen Tribological da M Lubrication
Daga cikin mafi tsufa kuma mafi jurewa aikace-aikace na MoS biyu shine azaman busasshiyar lu'u-lu'u a cikin matsanancin yanayi inda mai ya gaza.– kamar injin tsabtace ruwa, high yanayin zafi, ko matsalolin cryogenic.
Rage ƙarfin juzu'in tsaka-tsaki na sararin van der Waals yana ba da damar zamewa mai sauƙi tsakanin S– Mo– S yadudduka, haifar da ƙima na shafa kamar yadda aka rage kamar 0.03– 0.06 ƙarƙashin ingantattun yanayi.
Ayyukansa yana ƙara haɓaka ta m mannewa zuwa saman karfe da juriya ga hadawan abu da iskar shaka har zuwa ~ 350 ° C cikin iska, bayan haka MoO ₃ samuwar yana kara lalacewa.
MoS ₂ ana yawan amfani da shi a cikin tsarin sararin samaniya, injin famfo, da sassan bindigogi, yawanci ana amfani da su azaman sutura ta hanyar ƙonawa, sputtering, ko haɗin haɗin kai zuwa matrix polymer.
Bincike na yanzu ya nuna cewa danshi na iya lalata lubricity ta haɓaka mannewar interlayer, ƙwaƙƙwarar karatu daidai cikin yadudduka na hydrophobic ko abubuwan da ke haifar da lubricating don ingantacciyar tsaron muhalli.
3.2 Dijital da Optoelectronic Reaction
A matsayin semiconductor kai tsaye a cikin sigar monolayer, MoS ₂ yana nuna ƙarfin sadarwa mai ƙarfi, tare da sha coefficients wuce 10 ⁵ santimita ⁻¹ da yawan yawan amfanin ƙasa a cikin hasken haske.
Wannan yana sa ya zama mai kyau ga ultrathin photodetectors tare da saurin amsawa da tsinkayen watsa labarai, daga bayyane zuwa kusa-infrared wavelengths.
Tasirin-filin transistors dangane da monolayer MoS biyu suna nuna kunnawa/kashe ma'auni> 10 takwas da sassaucin mai bada sabis kusan 500 santimita ²/V · s a cikin samfuran da aka dakatar, kodayake hanyoyin sadarwa na substrate yawanci suna iyakance ƙimar aiki zuwa 1– 20 cm BIYU/V · s.
Spin-kwari hade, wani sakamako na m juzu'i-orbit hulda da busted juzu'i rabo, ya sa ya yiwu ga valleytronics– ƙayyadaddun ƙayyadaddun ƙayyadaddun bayanai don bayanin yin amfani da ƙimar kwarin 'yanci a cikin ɗakin makamashi.
Waɗannan ƙididdigar ƙididdigewa suna sanya MoS ₂ a matsayin ɗan takara don dabaru masu ƙarancin ƙarfi, ƙwaƙwalwar ajiya, da kuma adadin abubuwan kwamfuta.
4. Aikace-aikace a cikin Power, Catalysis, da kuma Arising Technologies
4.1 Electrocatalysis don amsawar Ci gaban Hydrogen (ITA)
MoS biyu a haƙiƙa ya zama zaɓi mai ban sha'awa mara tsada ga platinum a cikin martanin ci gaban hydrogen (ITA), wani muhimmin tsari a cikin ruwa electrolysis don samar da hydrogen-friendly yanayi.
Yayin da ainihin jirgin sama ne catalytically inert, Shafukan gefuna da ayyukan sulfur suna nuna mafi kyawun tallan hydrogen gabaɗayan kuzari (ΔG_H * ≈ 0), kwatankwacin Pt.
Hanyoyin nanostructuring– kamar ƙirƙirar nanosheets madaidaiciya a tsaye, fina-finai masu aibi, ko kayan aikin doped tare da Ni ko Co– yi cikakken amfani da kauri mai aiki da ƙarfin lantarki.
Lokacin da aka haɗa su cikin na'urori masu ɗaukar nauyi kamar carbon nanotubes ko graphene, MoS biyu suna samun kauri mai girma na yanzu da tsaro mai dorewa a ƙarƙashin acidic ko tsaka tsaki yanayi.
Ana samun ƙarin haɓakawa ta hanyar kiyaye matakin ƙarfe 1T, wanda ke haɓaka haɓakawa na ciki kuma yana bayyana ƙarin shafuka masu aiki.
4.2 Kayan Wutar Lantarki Mai daidaitawa, Sensors, da na'urorin Quantum
A inji versatility, bude baki, da girman girman-zuwa-girma na MoS biyu sun sa ya dace don sassauƙa da na'urorin lantarki masu sawa.
transistor, dabaru da'irori, kuma an nuna na'urorin ƙwaƙwalwar ajiya akan filayen filastik, kunna allon nuni mai lanƙwasa, lafiya nuni, da kuma na'urori masu auna sigina na IoT.
MoS ₂ tushen gas na'urori masu auna firikwensin suna nuna babban hankali ga NO ₂, NH UKU, da H BIYU O saboda canja wurin lissafin akan tallan kwayoyin halitta, tare da lokutan amsawa a cikin nau'in sub-na biyu iri-iri.
A cikin kididdigar fasahar zamani, MoS ₂ yana karbar bakuncin excitons da trions a matakan zazzabi na cryogenic, kuma yankunan pseudomagnetic da ke haifar da takura na iya kama masu samar da sabis tarko, kyale masu fitar da hotuna guda ɗaya da ɗigon ƙima.
Waɗannan haɓakar suna haskaka MoS biyu ba kawai a matsayin abu mai amfani ba amma azaman tsarin bincika mahimman ilimin kimiyyar lissafi a cikin raguwar girma..
A sake fasalin, molybdenum disulfide yana misalta haɗuwa da samfuran gargajiya na binciken kimiyya da ƙirar ƙima..
Daga tsohuwar rawar da yake takawa a matsayin abu mai mai zuwa tura shi na zamani a cikin na'urorin lantarki masu sirara da tsarin wutar lantarki, MoS biyu na ci gaba da sake fasalin iyakokin abin da zai yiwu a ƙirar kayan nanoscale.
Kamar yadda kira, halayyar, da haɓaka hanyoyin assimilation, Tasirinsa a duk tsawon binciken kimiyya da fasaha na zamani yana da matsayi don fadada har ma da gaba.
5. Mai rarrabawa
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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