1. Crystal Framework na Split Anisotropy
1.1 2H na 1T Polymorphs: Ihe owuwu na dijitalụ Duality
(Molybdenum disulfide)
Molybdenum disulfide (MOS ₂) bụ metal dichalcogenide mgbanwe gbawara agbawa (TMD) nwere usoro kemịkalụ nke nwere otu molybdenum atom sandwiched n'etiti 2 sọlfọ atọm na trigonal prismatic synchronization, na-emekọ ọnụ ọnụ S– Mo– S mpempe akwụkwọ.
A na-akwakọba ndị monolayers ndị a elu na ala wee jide onwe ha site na nrụgide van der Waals na-adịghị ike, na-eme ka mma interlayer dị mfe na npụpụ ka ọ dị gịrịgịrị akụkụ abụọ (2D) kristal– ihe eji arụ ọrụ bụ isi na ọrụ ya dị iche iche.
MoS abụọ dị n'ụdị polymorphic dị iche iche, Ihe kacha echekwa ọkụ bụ akụkụ nke 2H semiconducting (itule hexagonal), 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) na nnukwu, mmetụta dị oke mkpa maka ngwa optoelectronic.
N'akụkụ aka nke ọzọ, usoro nke metastable 1T (oke tetragonal) nabata synchronization octahedral ma na-akpa àgwà dị ka onye na-eduzi igwe n'ihi onyinye eletrọn sitere na atom sọlfọ., na-enyere ngwa na electrocatalysis na conductive composites.
Enwere ike ịkpalite mgbanwe usoro n'etiti 2H na 1T na kemịkalụ, electrochemically, ma ọ bụ site n'ichepụta nrụgide, na-enye usoro a na-atụgharị anya maka ịmepụta ngwaọrụ multifunctional.
Ikike ịkwado na ịhazi usoro ndị a n'otu ebe n'ime flake naanị na-emepe ụzọ maka ụlọ heterostructures n'ime ụgbọ elu nwere ngalaba eletrọnịkị pụrụ iche..
1.2 Nkwarụ, Doping, na Akụkụ akụkụ
Ịrụ ọrụ nke MoS abụọ na ngwa catalytic na dijitalụ na-enwe mmetụta dị ukwuu maka nsogbu atomiki na dopants..
Mmejọ ntụpọ dị ka ọrụ sọlfọ na-eje ozi dị ka ndị na-enye onyinye elektrọn, na-ebuli n-ụdị conductivity na-arụ ọrụ dị ka ebe nrụọrụ weebụ na-arụ ọrụ maka nzaghachi mmepe hydrogen (YA) na mmiri kewara.
Oke oke ọka na nsogbu ahịrị nwere ike igbochi njem njem ọnụ ahịa ma ọ bụ mepụta ụzọ na-eduzi mpaghara, dabere na ntọlite tomiki ha.
Doping edoziziri yana nchara ngbanwe (eg, Re, Nb) ma ọ bụ chalcogen (eg, Se) na-enyere mma-n'iji ya gee ntị nke gbalaga Ọdịdị, itinye uche onye na-ahụ maka ọrụ, yana nsonaazụ njikọta nke spin-orbit.
N'ụzọ dị mkpa, N'ọnụ nke MoS abụọ nanosheets, kpọmkwem metal Mo-akwụsị (10– 10) akụkụ, gosi ọrụ catalytic dị elu nke ukwuu karịa ụgbọ elu basal inert, na-akpali nhazi nke nanostructured ọkwọ ụgbọala na-eji nke ọma n'ọnụ ọnụ kpọmkwem mkpughe.
( Molybdenum disulfide)
Sistemu arụrụ arụrụ arụrụ na-egosipụta kpọmkwem ka nhịahụ ọkwa atọm nwere ike isi gbanwee mineral na-emekarị ka ọ bụrụ ngwaahịa bara uru dị elu..
2. Synthesis na Atụmatụ Nanofabrication
2.1 Usoro nrụpụta nnukwu ihe nkiri na nke dị mkpa
Molybdenite eke, ụdị ịnweta nke MoS ₂, ejirila ya ruo ọtụtụ afọ dị ka ihe mmanu siri ike, Otú ọ dị ngwa nke oge a na-achọ ịdị ọcha dị elu, ụdị arụrụ arụ na-achịkwa nke ọma.
Ntụkwasị mmiri kemịkalụ (CVD) bụ usoro kachasị 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 na-agbanwe agbanwe.
Na CVD, molybdenum na sulfur precursors (eg, MoO anọ na S ntụ ntụ) na-ekupụ na okpomọkụ (700– 1000 Celsius C )na njikwa ikuku, na-eme ka o kwe omume maka uto oyi akwa-site-oyi akwa na nhazi ngalaba na-emegharị emegharị.
Epeepu igwe (“scotch teepu obibia”) na-anọgide na ọkọlọtọ maka ihe atụ nyocha-ọkwa, 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 nnukwu kristal na ihe mgbaze ma ọ bụ surfactant ịgba akwụkwọ, na-arụpụta colloidal dispersions nke ole na ole-oyi akwa nanosheets adabara n'ígwé, ngwakọta, na ink usoro.
2.2 Assimilation Heterostructure na Nhazi Ngwá Ọrụ
Ezigbo ohere nke MoS ₂ na-ebilite mgbe etinyere ya ozugbo na vetikal ma ọ bụ akụkụ heterostructures yana ihe 2D ndị ọzọ dị ka graphene., boron nitride hexagonal (h-BN), ma ọ bụ WSe abụọ.
Usoro heterostructures van der Waals ndị a na-eme ka o kwe omume imepụta ngwa ngwa n'ụzọ ziri ezi., nke mejupụtara tunneling transistor, fotodetector, na diode na-enye ọkụ (Igwe ọkụ), ebe enwere ike ịmepụta ụgwọ interlayer na nnyefe ike.
Usoro nke lithographic na etching na-enyere aka imepụta nanoribbons, ntụpọ quantum, na transistor mmetụta ubi (FETs) nwere ogologo netwọk ruo iri iri nanometers.
Dielectric encapsulation na h-BN na-echekwa MoS ₂ site na mbibi gburugburu ebe obibi ma na-ebelata ịgbasa ụgwọ, na-emeziwanye mmegharị ndị na-eweta ya na nkwụsi ike ngwa.
Ọganihu nrụpụta ndị a dị mkpa maka ịtụgharị MoS ₂ site na mmasị ụlọ nyocha gaa na akụkụ enwere ike na nanoelectronics ọgbọ na-abịa..
3. Njirimara arụrụ arụ na usoro anụ ahụ
3.1 Àgwà Tribological na mmanu siri ike
Otu n'ime ngwa kacha ochie na nke na-adịgide adịgide nke MoS abụọ dị ka lube siri ike akọrọ na oke ikuku ebe mmanụ mmiri na-ada.– dị ka ihe na-ehicha ihe, oke okpomọkụ, ma ọ bụ nsogbu cryogenic.
Ike mbelata ihe nkesa interlayer nke oghere van der Waals na-enyere mbanye dị mfe n'etiti S– Mo– S n'ígwé, na-eme ka ọnụọgụ nke mkpocha dị ka ebelata ka 0.03– 0.06 n'okpuru ezigbo ọnọdụ.
Arụmọrụ ya na-abawanye site na nrapagide siri ike na elu igwe na iguzogide oxidation ruo ~ 350 Celsius C na ikuku, gafere nke MoO ₃ nhazi na-abawanye iyi.
A na-ejikarị MoS₂ eme ihe na sistemụ ikuku, mgbapụta mgbapụta, na ngwa agha akụkụ, a na-ejikarị eme ihe dị ka ihe mkpuchi site na ọkụ, sputtering, ma ọ bụ ngwakọta ngwakọta n'ime polymer matrices.
Nnyocha ndị dị ugbu a na-egosi na mmiri nwere ike imebi mmanu mmanu site n'ịkwalite njikọ interlayer, na-akpali akpali ọmụmụ ozugbo n'ime hydrophobic layers ma ọ bụ crossbreed lubricating ihe maka mma gburugburu ebe obibi nchekwa.
3.2 Mmeghachi omume Digital na Optoelectronic
Dị ka a kpọmkwem oghere semiconductor na monolayer ụdị, MoS ₂ na-egosipụta nkwurịta okwu ọkụ-okwu siri ike, yana ọnụọgụ absorption karịrị 10 ⁵ centimeters ⁻¹ na nnukwu quantum na-amịpụta na fotoluminescence.
Nke a na-eme ka ọ bụrụ ihe magburu onwe ya maka ndị na-ahụ maka foto ultrathin nwere oge mmeghachi omume ngwa ngwa yana nghọta brọdband, site na anya ruo nso-infrared wavelengths.
transistors mmetụta ubi dabere na monolayer MoS abụọ na-egosipụta ma ọ bụ gbanyụọ oke> 10 asatọ na ndị na-eweta ọrụ mgbanwe dị ka 500 centimeters ²/V · s n'ime ihe nlere anya kwụsịtụrụ, Agbanyeghị na nkwukọrịta substrate na-ejikarị uru bara uru na 1– 20 cm Abụọ/ V · s.
Spin-valley na-ejikọta, mweghachi nke mkparịta ụka siri ike na-agba ọsọ-orbit yana oke ngbanwe gbadara agbagọ, na-eme ka o kwe omume valleytronics– ọkọlọtọ pụrụ iche maka info inscribing ojiji nke ndagwurugwu ogo nnwere onwe n'ime ụlọ ume.
Mmetụta nke quantum ndị a na-edobe MoS ₂ dị ka onye ndoro-ndoro maka mgbagha dị ala, ebe nchekwa, na ihe kọmpụta quantum.
4. Ngwa dị na Ike, Catalysis, na Arising Teknụzụ
4.1 Electrocatalysis maka nzaghachi ọganihu hydrogen (YA)
MoS abụọ abụrụla ihe na-agba ume ọzọ na-adịghị ọnụ ahịa nke platinum na nzaghachi ọganihu hydrogen (YA), usoro dị mkpa na mmiri electrolysis maka mmepụta hydrogen na gburugburu ebe obibi.
Mgbe isi ụgbọ elu bụ catalytically inert, Ebe nsọtụ na ọrụ sọlfọ na-egosipụta mgbasa ozi hydrogen kacha mma na-enweghị ike (ΔG_H * ≈ 0), tụnyere Pt.
Ụzọ nanostructuring– dị ka ịmepụta nanosheets kwụ ọtọ kwụ ọtọ, ihe nkiri bara ụba nwere ntụpọ, ma ọ bụ ngwakọ doped nwere Ni ma ọ bụ Co– were ohere zuru oke nke ọkpụrụkpụ saịtị na-arụ ọrụ na ikuku eletrik.
Mgbe etinyere ya na electrodes nwere ihe na-eduzi dị ka carbon nanotubes ma ọ bụ graphene, MoS abụọ na-enweta oke dị ugbu a yana nchekwa na-adịgide adịgide n'okpuru ọnọdụ acidic ma ọ bụ nnọpụiche.
A na-enweta nkwalite ndị ọzọ site n'ịkwado ọkwa 1T metal, nke na-ebuli conductivity dị n'ime ma na-ekpughe saịtị ndị ọzọ na-arụ ọrụ.
4.2 Eletrọnịkị na-agbanwe agbanwe, Ihe mmetụta, na Ngwa Quantum
The n'ibu versatility, oghere, na elu elu-na-olu nke MoS abụọ na-eme ka ọ dị mma maka ngwa eletrik na-agbanwe agbanwe na wearable.
transistors, sekit mgbagha, na egosiputala ngwa ebe nchekwa na ala rọba, na-enyere ihuenyo ngosi bendable, ihe ngosi ahụike, na IoT sensọ.
Ihe mmetụta gas nke MoS ₂ na-egosipụta mmetụta dị elu na NO ₂, NH ATO, na H abụọ O n'ihi nnyefe ụgwọ n'elu mgbasa ozi molecular, nwere oge nzaghachi n'ụdị nke abụọ nke abụọ.
Na quantum teknụzụ ọgbara ọhụrụ, MoS₂ na-akwado excitons na trions mpaghara na ọkwa okpomọkụ cryogenic, na mpaghara pseudomagnetic kpatara nsogbu nwere ike ọnyà ndị na-enye ọrụ, na-enye ohere mpụta otu foto na ntụpọ quantum.
Mmụba ndị a na-egosipụta MoS abụọ ọ bụghị naanị dị ka ihe bara uru mana dị ka usoro maka inyocha physics dị mkpa na akụkụ mbelata..
Na nchịkọta, molybdenum disulfide na-egosipụta njikọ nke ngwaahịa oge gboo nyocha sayensị na nhazi nke quantum.
Site na ọrụ ya oge ochie dị ka ihe na-ete mmanụ ruo n'ịkwanye ya ọgbara ọhụrụ na ngwa eletrọnịkị dị gịrịgịrị na sistem ike, MoS abụọ na-aga n'ihu na-akọwapụta ókèala nke ihe ga-ekwe omume na nhazi ihe nanoscale.
Dị ka njikọ, njirimara, na mmepe usoro assimilation, mmetụta ya na nyocha sayensị na teknụzụ ọgbara ọhụrụ ka edobere ka ọ gbasaa karịa.
5. Onye nkesa
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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