1. Crystal Framework na Split Anisotropy
1.1 2H na 1T Polymorphs: Ihe owuwu na dijitalụ Duality
(Molybdenum disulfide)
Molybdenum disulfide (MoS TWO) is a split transition steel dichalcogenide (TMD) with a chemical formula including one molybdenum atom sandwiched in between two sulfur atoms in a trigonal prismatic coordination, na-emekọ ọnụ ọnụ S– Mo– S mpempe akwụkwọ.
These specific monolayers are piled vertically and held with each other by weak van der Waals forces, allowing very easy interlayer shear and exfoliation down to atomically thin two-dimensional (2D) kristal– an architectural function main to its varied useful duties.
MoS ₂ exists in multiple polymorphic kinds, the most thermodynamically steady being the semiconducting 2H stage (hexagonal symmetry), ebe oyi akwa ọ bụla na-egosi bandgap kwụ ọtọ nke ~ 1.8 eV n'ụdị monolayer nke na-atụgharị gaa na bandgap na-apụtaghị ìhè (~ 1.3 eV) N'ùkwù, ihe dị mkpa maka ngwa optoelectronic.
N'akụkụ aka nke ọzọ, usoro nke metastable 1T (tetragonal itule) na-ewere nhazi nke octahedral wee rụọ ọrụ dị ka onye nduzi ọla n'ihi onyinye eletrọn sitere na atom sọlfọ., na-eme ka o kwe omume maka ngwa na electrocatalysis na ogige ndị na-eduzi.
Enwere ike ịkpalite mgbanwe ọkwa n'etiti 2H na 1T na kemịkalụ, electrochemically, ma ọ bụ site n'ichepụta nrụgide, na-enye a tunable ikpo okwu maka imebe multifunctional ngwaọrụ.
Ikike ịkwado na ịhazi usoro ndị a n'obere oghere n'ime otu flake na-emepe ụzọ maka ụlọ heterostructures n'ime ụgbọ elu nwere ngalaba eletrọnịkị pụrụ iche..
1.2 Nkwarụ, Doping, na Akụkụ akụkụ
Arụmọrụ nke MoS abụọ na ngwa catalytic na dijitalụ bụ ihe gbasara ọnụọgụ atọm na dopants..
Nsogbu ebumpụta ụwa dị ka oghere sọlfọ na-arụ ọrụ dị ka ndị na-enye aka electron, na-ebuli n-ụdị conductivity na-arụ ọrụ dị ka ebe nrụọrụ weebụ na-arụ ọrụ maka mmeghachi omume ọganihu hydrogen (YA) na mmiri kewara.
Oke oke ọka na nsogbu ahịrị nwere ike igbochi mbufe ego ma ọ bụ mepụta ụzọ na-eduzi mpaghara, dabere na nhazi atomic ha.
Doping edoziziri na ọla mgbanwe (eg, Re, Nb) ma ọ bụ chalcogen (eg, Se) na-enye ohere mma-n'iji ya gee ntị nke gbalaga kpuchie, ntinye uche nke onye na-eweta, na spin-orbit na-ejikọta nsonaazụ.
N'ụzọ dị mkpa, akụkụ nke MoS abụọ nanosheets, karịsịa metal Mo-akwụsị (10– 10) n'ọnụ, gosipụtara ọrụ catalytic dị ukwuu karịa ụgbọ elu basal inert, na-akpali akpali okirikiri nhọrọ ukwuu nke nanostructured stimulants na-eji kasị mma nke ihu ikpughe.
( Molybdenum disulfide)
Sistemu arụrụ arụrụ arụ na-egosi etu nhazi ọkwa atọm nwere ike isi gbanwee mineral na-emekarị ka ọ bụrụ ihe bara uru dị elu..
2. Synthesis na Atụmatụ Nanofabrication
2.1 Ụzọ nrụpụta nnukwu ihe nkiri na nke dị mkpa
Molybdenite eke, Ụdị ịnweta nke MoS ₂, ejirila ọtụtụ afọ mee ihe dị ka lube siri ike, mana ngwa nke oge a chọrọ ịdị ọcha dị elu, ụdị arụrụ arụ na-achịkwa nke ọma.
Ntụkwasị mmiri kemịkalụ (CVD) bụ usoro na-eduga maka ịmepụta nnukwu mpaghara, monolayer kristallinity dị elu na ihe nkiri MoS ₂ nwere obere oyi akwa na ihe ndị dị ka SiO TWO/ Si, sapphire, ma ọ bụ polymers mgbanwe.
Na CVD, molybdenum na sulfur precursors (eg, MoO anọ na S ntụ ntụ) bụ vaporized na okpomọkụ (700– 1000 Celsius C )n'okpuru ebe a na-achịkwa, na-enye ohere mmepe oyi akwa-site-oyi akwa yana akụkụ ngalaba a na-emegharị emegharị na nhazi.
Mechanical exfoliation (“scotch teepu obibia”) na-aga n'ihu na-abụ ọkọlọtọ maka nlele ọkwa ọkwa nyocha, na-emepụta monolayers ultra-dị ọcha nwere ntụpọ dị n'akụkụ, ọ bụ ezie na ọ nweghị scalability.
Peeling nke usoro mmiri mmiri, gụnyere sonication ma ọ bụ shiee ngwakọta nke uka kristal na ihe mgbaze ma ọ bụ surfactant ngwọta, na-ewepụta colloidal dispersions nke ole na ole-layer nanosheets adabara finishing, ngwakọta, na ink usoro.
2.2 Ngwakọta Heterostructure na ụkpụrụ ngwaọrụ
Ikike eziokwu nke MoS ₂ na-apụta mgbe etinyere ya ozugbo na vetikal ma ọ bụ n'akụkụ heterostructures yana ihe 2D ndị ọzọ dị ka graphene., boron nitride hexagonal (h-BN), ma ọ bụ WSe ₂.
Ndị a van der Waals heterostructures na-enyere nhazi nke ngwaọrụ atomically kpọmkwem, gụnyere tunneling transistor, fotodetector, na diode na-enye ọkụ (Igwe ọkụ), ebe enwere ike ịmepụta ego interlayer na nnyefe ike.
Usoro nhazi lithographic na etching na-enyere aka imepụta nanoribbons, ntụpọ quantum, na transistor mmetụta ubi (FETs) nwere nha ọwa ruo iri iri nanometers.
Dielectric encapsulation na h-BN na-echekwa MoS ₂ site na mbibi gburugburu ebe obibi ma na-ebelata ịgbasa ego., na-akwalite mgbanwe nke ndị na-ahụ maka ọrụ na nchekwa ngwá ọrụ.
Ọganihu ihe owuwu ndị a dị oke mkpa maka ịtụgharị MoS abụọ site n'ọchịchọ ụlọ nyocha gaa na akụrụngwa enwere ike na nanoelectronics ọgbọ na-abịa..
3. Atụmatụ arụ ọrụ na usoro anụ ahụ
3.1 Omume Tribological na mmanu siri ike
Otu n'ime ngwa kacha ochie na nke na-adịgide adịgide nke MoS ₂ bụ dị ka lube siri ike na-ekpo ọkụ na gburugburu ebe mmiri mmiri na-adaba.– dị ka ihe na-ehicha ihe, heats, or cryogenic conditions.
The reduced interlayer shear strength of the van der Waals void permits very easy sliding in between S– Mo– S n'ígwé, na-eme ka ọnụọgụ nke mkpocha dị ka ebelata ka 0.03– 0.06 under ideal problems.
Its performance is further enhanced by strong adhesion to metal surface areas and resistance to oxidation as much as ~ 350 Celsius C na ikuku, beyond which MoO five formation boosts wear.
MoS ₂ is widely used in aerospace systems, air pump, and gun components, typically used as a finish by means of burnishing, sputtering, ma ọ bụ ngwakọta ngwakọta n'ime polymer matrices.
Recent studies show that humidity can weaken lubricity by raising interlayer bond, prompting research right into hydrophobic coatings or hybrid lubes for better environmental stability.
3.2 Electronic and Optoelectronic Feedback
Dị ka a kpọmkwem oghere semiconductor na monolayer ụdị, MoS ₂ na-egosipụta mmekọrịta siri ike-ihe, yana ọnụọgụ absorption karịrị 10 ⁵ centimeters ⁻¹ na nnukwu quantum laghachi na fotoluminescence.
Nke a na-eme ka ọ dị mma maka ultrathin photodetectors nwere oge ime ihe ngwa ngwa yana ọkwa brọdband nke uche, site na anya ruo nso-infrared wavelengths.
transistor mmetụta ubi dabere na monolayer MoS ₂ na-egosi oke ngbanyụ ma ọ bụ gbanyụọ> 10 asatọ na onye na-enye oche nkwagharị ruo 500 centimita ²/V · s n'atụmatụ kwụsịtụrụ, Agbanyeghị na mmekọrịta nke mkpụrụ osisi na-amachibido uru bara uru ka ọ bụrụ 1– 20 cm Abụọ/ V · s.
Spin-valley na-ejikọta, mmetụta nke mkparịta ụka siri ike na-agba ọsọ-orbit yana nguzozi ngbanwe gbapụrụ agbapụ, na-enyere aka 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, ebe nchekwa, and quantum computer aspects.
4. Ngwa dị na Ike, Catalysis, na Emerging Teknụzụ
4.1 Electrocatalysis for Hydrogen Evolution Response (YA)
MoS two has become an appealing non-precious choice to platinum in the hydrogen evolution reaction (YA), an essential procedure in water electrolysis for green hydrogen production.
While the basal airplane is catalytically inert, edge sites and sulfur jobs display near-optimal hydrogen adsorption complimentary power (ΔG_H * ≈ 0), similar to Pt.
Nanostructuring techniques– such as developing up and down straightened nanosheets, defect-rich movies, or drugged hybrids with Ni or Co– maximize active website thickness and electric conductivity.
Mgbe etinyere n'ime electrodes nwere ihe na-eduzi dị ka carbon nanotubes ma ọ bụ graphene, MoS abụọ na-arụ ọrụ njupụta dị elu yana nkwụsi ike na-adịte aka n'okpuru ọnọdụ acidic ma ọ bụ nnọpụiche.
A na-enweta nkwalite ndị ọzọ site n'ime ka ogbo 1T metal guzosie ike, nke na-ebuli conductivity intrinsic ma na-ekpughe webụsaịtị agbakwunyere ike.
4.2 Ngwa eletrọnịkị dị iche iche, Ihe mmetụta, na Ngwa Quantum
The n'ibu mgbanwe, nghọta, na elu elu-na-oke nha nke MoS abụọ na-eme ka ọ dị mma maka ngwaọrụ eletrọnịkị na-agbanwe na wearable.
transistors, sekit mgbagha, na ngwaọrụ ebe nchekwa egosila n'ezie na rọba substratums, ekwe ekwe ekwe ngosi ihuenyo, ihe ngosi ahụike, na ngalaba mmetụta IoT.
Ngalaba na-ahụta gas nke MoS TWO na-egosipụta ọkwa dị elu nke uche na Ọ BỤGHỊ abụọ, NH ABỤỌ, na H abụọ O n'ihi nnyefe ụgwọ n'elu mgbasa ozi molecular, yana oge nzaghachi n'usoro nkeji nke abụọ.
Na quantum teknụzụ ọgbara ọhụrụ, Ndị ọrụ MoS abụọ weputara excitons na trions na ọkwa okpomọkụ cryogenic, na oghere pseudomagnetic kpatara nsogbu nwere ike ijide ndị na-ebu ya ọnyà, na-enyere ndị na-ebupụta otu foto na ntụpọ quantum.
Mmụba ndị a na-egosipụta MoS abụọ ọ bụghị naanị dị ka ngwaahịa na-arụ ọrụ mana dị ka usoro maka ịlele physics dị mkpa na obere nha..
Na nchịkọta, molybdenum disulfide na-egosipụta njikọ nke sayensị ngwaahịa na-adịghị agafe agafe na injinia quantum.
Site na ọrụ ya oge ochie dị ka ihe na-ete mmanụ ruo na mwepụta ya nke oge a na ngwa eletrọnịkị dị gịrịgịrị na sistemụ ike, MoS ₂ na-anọgide na-akọwapụta ókèala nke ihe ga-ekwe omume na ụdị ngwaahịa nanoscale.
Dị ka njikọ, njirimara, na teknụzụ assimilation ọganihu, Mmetụta ya n'ofe sayensị na ihe ọhụrụ dị njikere ịgbasawanye nke ọma.
5. Onye na-enye
TRUNNANO bụ onye na-emepụta Molybdenum Disulfide zuru ụwa ọnụ na onye na-ebubata ogige nwere ihe karịrị 12 afọ nke ọkachamara na nanomaterials kacha mma na kemịkalụ ndị ọzọ. Ụlọ ọrụ ahụ na-emepụta ihe dị iche iche nke ntụ ntụ na kemịkal. Nye ọrụ OEM. Ọ bụrụ na ịchọrọ Molybdenum Disulfide dị elu, biko nweere onwe gị ịkpọtụrụ anyị. Ị nwere ike pịa ngwaahịa ahụ iji kpọtụrụ anyị.
Tags: Molybdenum disulfide, nano molybdenum disulfide, MoS2
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