1. Ka Papahana Pono a me nā Kuantum Qualities o Molybdenum Disulfide
1.1 Hoʻolālā Crystal a me ka ʻōnaehana hoʻopaʻa paʻa
(Molybdenum disulfide pauda)
Molybdenum disulfide (MoS ELUA) he mea hoʻololi metala dichalcogenide (TMD) ua lilo ia i hua pōhaku kihi i loko o nā noi ʻoihana manawa ʻole a me ka nanotechnology hou.
Ma ka pae atomika, MoS ₂ crystallize i loko o kahi papa hana i loaʻa i kēlā me kēia papa kahi mokulele o nā molybdenum atoms i hoʻopaʻa ʻia ma waena o nā mokulele ʻelua o nā ʻātoma sulfur., ke kūkulu nei i kahi S– Mo– S trilayer.
Hoʻopaʻa ʻia kēia mau trilayers me kekahi i kekahi e nā pūʻali nāwaliwali van der Waals, hiki ke ʻoki maʻalahi ma waena o nā papa a puni– he hale i hoʻokumu i kona lubricity maikaʻi loa.
ʻO ka māhele thermodynamically palekana loa ka 2H (hexagonal) pae, he semiconducting a hōʻike i kahi bandgap pololei ma ke ʻano monolayer, ka hoʻololi ʻana i kahi bandgap indirect i ka nui.
Keia quantum hopu hopena, kahi e loli nui ai nā waiwai kikohoʻe me ka paʻa, hana ʻo MoS ₂ i ʻōnaehana hoʻolālā no ka noiʻi ʻana i nā ʻāpana ʻelua (2ʻO D) nā huahana ma waho o ka graphene.
Ma ka lima ʻē aʻe, ka emi maa mau 1T (ketragonal) ʻO ka pae he metala a metatable, hana maʻamau ma o ke kemika a i ʻole ka electrochemical intercalation, a he mea hoihoi ia no ka hoʻohana ʻana i ka wahi hoʻopaʻa ʻana i ka ikehu a me ka catalytic.
1.2 Hoʻolālā Band Digital a me nā Manaʻo Optical
ʻO nā waiwai noho kikohoʻe o MoS ₂ pili loa i ka nui, e hoʻolilo iā ia i ʻōnaehana kūikawā no ka ʻike ʻana i nā phenomena quantum i nā ʻōnaehana haʻahaʻa.
Ma ke ʻano nui, Hana ʻo MoS ₂ ma ke ʻano he semiconductor bandgap indirect me kahi bandgap o ka 1.2 eV.
Eia naʻe, ke hoʻoemi ʻia i lalo i hoʻokahi papa atomika, ʻO ka hopena o ka hoʻopaʻa ʻana i ka quantum ke kumu i hoʻololi ʻia i kahi bandgap pololei o ka pili 1.8 eV, aia ma ka lae K o ka wahi o Brillouin.
Hiki i kēia hoʻololi ke hiki i ka photoluminescence ikaika a me ke kamaʻilio māmā pono, ka hana ʻana i ka monolayer MoS ₂ kūpono loa no nā hāmeʻa optoelectronic e like me nā mea nānā kiʻi, nā diodes māmā (Nā LED), a me nā pūnaewele lā.
Hōʻike ka conduction a me valence bands i ka hui ʻana o ka spin-orbit, ke kumu o ka physics pili i ke awawa kahi e hiki ai ke hoohana pono ia na awawa K a me K i ka hoohana ana i ka malamalama polarized circularly.– kahi hanana i kapa ʻia ʻo ka hopena o ke awāwa Hall.
( Molybdenum disulfide pauda)
Hiki i kēia valleytronic hiki ke wehe i nā ala hou no ka hoʻopili ʻana i ka ʻike a me ka mālama ʻana i nā mea uila maʻamau maʻamau..
Eia kekahi, Hōʻike ʻo MoS ₂ i nā hopena excitonic paʻa i ka pae wela o ka wahi ma muli o ka hōʻemi ʻia ʻana o ka dielectric screening ma ke ʻano 2D., me nā ikaika hoʻopaʻa exciton a hiki i nā haneli meV, ʻoi aku ka nui ma mua o nā semiconductors maʻamau.
2. Nā ʻenehana Synthesis a me nā ʻenehana hana Scalable
2.1 ʻO ka Peeling Top-Down a me ka Nanoflake Fabrication
Hoʻomaka ka hoʻokaʻawale ʻana o ka monolayer a me ka liʻiliʻi-layer MoS ʻelua me ka mechanical exfoliation, he hoʻolālā e like me ka “ʻO ka hoʻokokoke ʻana i ka tape Scotch” hoʻohana ʻia no ka graphene.
Hoʻihoʻi kēia ʻano hana i nā flakes kiʻekiʻe me nā hemahema liʻiliʻi a me nā hale noho uila maikaʻi loa, kūpono no ke aʻo kumu a me ke kūkulu ʻana i nā mea hoʻohālike.
Eia naʻe, mechanical exfoliation mea maoli kaupalena 'ia i ka scalability a me ka aoao ana mana, ʻaʻole kūpono ia no nā hana ʻoihana.
No ka hoʻoponopono ʻana i kēia, Ua hoʻomohala ʻia ka wai-phase exfoliation, kahi e hohola ʻia ai ka nui o MoS ʻelua i loko o nā mea hoʻoheheʻe a i ʻole nā mea lapaʻau surfactant a ma muli o ka ultrasonication a i ʻole ka hui ʻana i ka shear.
Hoʻopuka kēia ʻenehana i nā hoʻokuʻu colloidal o nā nanoflakes i hiki ke hoʻololi ʻia ma o ka spin-coating, paʻi inkjet, a i ʻole ka hoʻopau ʻana i ka pulu, hiki i nā noi ʻāpana nui e like me nā mea uila uila a me nā papa.
ʻO ka nui, mānoanoa, a ʻo ka mānoanoa kīnā o nā flakes i ʻoki ʻia e pili ana i nā pae hoʻoponopono, i loko o ka sonication manawa, koho solvent, a me ka wikiwiki centrifugation.
2.2 Hoʻomohala i lalo a me ka waiho ʻana i nā kiʻiʻoniʻoni lahilahi
No nā noi e pono ai ka lole, kiʻiʻoniʻoni ʻāpana nui, ka waiho ʻana o ka mahu kemika (CVD) Ua hoʻopau maoli ʻo ia i ka papa synthesis alakaʻi no ka premium MoS ʻelua papa.
Ma CVD, molybdenum a me ka sulfur precursors– e like me ka molybdenum trioxide (MoO ₃) a me ka pauda sulfur– e hoʻoheheʻe ʻia a hana ʻia ma nā substratum i hoʻomehana ʻia e like me ke silicon dioxide a i ʻole sapphire ma lalo o nā kaiapuni i hoʻomalu ʻia..
Ma ka hoʻolima ʻana i ka mahana, kaumaha, kumukūʻai holo kinoea, a me ka mana ʻāpana ʻili o ka substrate, Hiki i nā ʻepekema ke hoʻoulu i nā monolayers mau a i ʻole nā hui multilayers me ka nui o ka inoa domain controllable a me ka crystallinity..
Aia nā ʻano hana ʻē aʻe me ka waiho ʻana o ka papa atomika (ALD), e hāʻawi ana i ka mana mānoanoa kiʻekiʻe ma ke degere angstrom, a me ka waiho ʻana o ka mahu kino (PVD), e like me ka sputtering, i kūpono me nā hale hana semiconductor e kū nei.
He mea koʻikoʻi kēia mau ʻano scalable no ka hoʻokomo ʻana iā MoS ʻelua i loko o nā ʻōnaehana kikohoʻe a me nā ʻōnaehana optoelectronic, kahi mea nui loa ka lokahi a me ka hana hou.
3. ʻO ka pono Tribological a me ka ʻoihana Lubrication Applications
3.1 Nā Pūnaehana o ka Lubrication Solid-State
ʻO kekahi o nā hoʻohana kahiko loa a ʻoi loa ka hoʻohana ʻana iā MoS ₂ ma ke ʻano he lubricant ikaika i nā lewa kahi i lawa ʻole a makemake ʻole ʻia nā aila wai a me nā aila..
ʻO nā pūʻali koa interlayer van der Waals e ʻae i ka S– Mo– E paheʻe nā lau S ma luna o kekahi me ke kūʻē liʻiliʻi, ʻo ka hopena i ka hōʻemi maoli ʻana o ka ʻōpala– maʻamau ma waena 0.05 a 0.1 i loko o nā pilikia maloʻo a i ʻole nā māmā.
ʻOi aku ka maikaʻi o kēia lubricity i ka aerospace, nā ʻōnaehana hoʻoheheʻe, a me nā lako wela kiʻekiʻe, kahi e mahuka ai nā lubricants kahiko, oxidize, a nawaliwali paha.
Hiki ke hoʻohana ʻia ʻo MoS ₂ ma ke ʻano he pauka maloʻo, uhi paʻa, i hoʻopuehu ʻia i loko o nā ʻaila, nā momona, a me nā pūhui polymer e hoʻoikaika i ka pale ʻana a hoʻemi i ka friction i nā bearings, mea lako, a me nā kelepona lele.
Hoʻonui hou ʻia kona pono i nā wahi haʻahaʻa ma muli o ka adsorption o nā ʻāpana wai e hana like me nā lubricants molecular ma waena o nā papa., ʻoiai hiki i ka pulu loa ke kumu i ka oxidation a me ka luku me ka manawa.
3.2 ʻO ka hui pū ʻana a me ka hoʻomaikaʻi ʻana i ka pale ʻana i ka lole
Hoʻokomo pinepine ʻia ʻo MoS ₂ i loko o ka metala, seramika, a me nā matrices polymer e hana i nā pūhui hoʻoluʻu ponoʻī me ke ola lawelawe lōʻihi.
I loko o ka metala-matrix composites, e like me MoS ₂-ikaika māmā alumini a kila paha, ʻO ka manawa lubricant e hoʻohaʻahaʻa i ka friction ma nā palena o ka palaoa a pale i ke komo ʻana o ke kāpili.
I loko o ka polymer composites, kiko'ī i loko o nā plastics hoʻolālā e like me PEEK a i ʻole nylon, Hoʻomaikaʻi ʻo MoS ₂ i ka hiki ke amo a hoʻemi i ka coefficient o ka friction me ka ʻole o ka hoʻoweliweli ʻana i ka ikaika mechanical..
Hoʻohana ʻia kēia mau mea hoʻohui i nā pua, sila, a me nā mea hoʻolele i ke kaʻa, ʻoihana ʻoihana, a me nā noi kai.
Eia hou, Hoʻohana ʻia ka plasma-sprayed a i ʻole sputter-deposited MoS ʻelua mau uhi i ka pūʻali koa a me nā ʻōnaehana aerospace., ʻo ia nā ʻenekini mokulele a me nā mīkini ukali, kahi koʻikoʻi ka hilinaʻi ma lalo o nā pilikia koʻikoʻi.
4. Nā hana e puka mai ana i ka ikehu, Mea uila, a me Catalysis
4.1 Nā noi i ka mālama ʻana i ka ikehu a me ka hoʻololi ʻana
Ma waho aʻe o ka lubrication a me ka uila, Ua loaʻa maoli ʻo MoS ʻelua i ke kaulana i nā ʻenehana hou, ʻoi aku ma ke ʻano he mea hoʻoikaika no ka pane hoʻomohala hydrogen (NANA) i ka wai electrolysis.
Aia nā kahua hoʻoikaika ikaika ma ka ʻaoʻao o ka S– Mo– S papa, kahi e kōkua ai nā molybdenum a me ka sulfur i hoʻohui ʻia i ka proton adsorption a me ka hoʻomohala H₂..
ʻOiai ʻoi aku ka liʻiliʻi o ka nui o MoS ʻelua ma mua o ka platinum, nanostructuring– e like me ka hoʻomohala ʻana i nā nanosheets i hoʻopololei pololei ʻia a i ʻole nā monolayers defect-engineered– hoʻonui nui i ka mānoanoa o nā pūnaewele ʻaoʻao ikaika, e hele kokoke mai ana i ka pono o na mea hooikaika kino honua.
Hoʻolilo kēia iā MoS TWO i kumu kūʻai haʻahaʻa hoʻoikaika, ka honua-nui koho no ka hana hydrogen omaomao.
Ma kahi hoʻopaʻa ikehu, ʻIke ʻia ʻo MoS ʻelua ma ke ʻano he mea anode i loko o nā pā lithium-ion a me ka sodium-ion ma muli o kona hiki ke hoʻonaʻauao kiʻekiʻe. (~ 670 mAh/g no Li ⁺) a me ka papa hana e hiki ai i ka ion intercalation.
Eia naʻe, ʻO nā pilikia e like me ka ulu ʻana o ka leo i ka wā kaʻa a me ka liʻiliʻi o ka conductivity uila e pono ai nā ala e like me ka carbon hybridization a i ʻole ka hoʻomohala heterostructure e hoʻonui i ka cyclability a me ka hana kumukūʻai..
4.2 ʻO ka hui pū ʻana i nā hāmeʻa Versatile a me Quantum
ʻO ka maʻalahi mechanical, māliko, ʻO ke ʻano semiconducting o MoS ʻelua e hoʻolilo iā ia i mea maikaʻi loa no nā polokalamu uila hiki ke maʻalahi a hiki ke hoʻohana..
ʻO nā transistors i hana ʻia mai ka monolayer MoS ʻelua hōʻike i nā ratio kiʻekiʻe a i ʻole (> 10 ⁸) a me ka mobility waiwai e like me ka nui 500 kenimika ELUA/ V · s ma nā ʻano i hoʻokuʻu ʻia, hiki i nā kaʻapuni logic ultra-thin, nā mea ʻike, a me nā mea hana hoʻomanaʻo.
Ke hoʻohui pū ʻia me nā mea 2D ʻē aʻe e like me graphene (no nā electrodes) a me hexagonal boron nitride (no ka hookui), ʻO MoS ₂ nā ʻano like ʻole van der Waals heterostructure e like me nā mea hana semiconductor kuʻuna akā me ka pololei ʻana o ka pae atomika..
Ke ʻimi ʻia nei kēia mau heterostructure no nā transistors tunneling, nā pila lā, a me ka quantum emitters.
Eia kekahi, ʻO ka hui ʻana o ka spin-orbit ikaika a me ka polarization o ke awāwa ma MoS ʻelua e hāʻawi i kahi ʻano no nā mea hana spintronic a me valleytronic., kahi i kākau ʻia ai ka ʻike ʻaʻole i mālama, akā naʻe i nā pae quantum o ke kūʻokoʻa, hiki ke alakaʻi i nā kūlana hoʻopili helu haʻahaʻa haʻahaʻa.
I ka recap, Hōʻike ka molybdenum disulfide i ka hoʻohui ʻana o ka ikehu kumu kahiko a me ka ʻenehana quantum-scale.
Mai kāna hana ma ke ʻano he lubricant ikaika paʻa i nā kaiapuni koʻikoʻi a hiki i kāna hiʻohiʻona ma ke ʻano he semiconductor i nā uila uila atomically a me ka catalyst i nā ʻōnaehana mana mau., Ke hoʻomau nei ʻo MoS ₂ e wehewehe hou i nā palena o ka ʻepekema huahana.
Ke hoʻonui nei nā ʻano hana synthesis a ulu nā ʻenehana hoʻohui, Hoʻonohonoho ʻia ʻo MoS ₂ e pāʻani i kahi hana nui i ka wā e hiki mai ana o ka hana holomua, ikaika ikaika, a me quantum infotech.
Mea hoʻolako
ʻO RBOSCCHO kahi mea hoʻolako mea hoʻolako kemika honua & mea hana me ka oi 12 mau makahiki i ka hoʻolako ʻana i nā kemika kiʻekiʻe kiʻekiʻe a me nā Nanomaterials. Hoʻokuʻu aku ka hui i nā ʻāina he nui, e like me USA, Kanaka, ʻEulopa, UAE, ʻApelika Hema, Tanazania, Kenia, ʻAikupita, Naigeria, Kameruna, Ukanada, Kuleke, Mekiko, ʻAkepaikana, Pelekiuma, Kupelo, Czech Republic, Palakila, Kili, ʻAlekina, Dubai, Iapana, Korea, Wiekanama, Tailani, Malaia, ʻInidonesia, Nuhōlani,Kelemānia, Palani, Ikalia, Pokukala etc. Ma ke ʻano he mea hana hoʻomohala nanotechnology alakaʻi, ʻO RBOSCHCO ka luna o ka mākeke. Hāʻawi kā mākou hui hana ʻoihana i nā hāʻina kūpono e kōkua i ka hoʻomaikaʻi ʻana i ka pono o nā ʻoihana like ʻole, hana waiwai, a maʻalahi hoʻi i nā pilikia like ʻole. Inā ʻoe e ʻimi nei molybdenum pauka lubricant, e ʻoluʻolu e hoʻouna i leka uila iā: [email protected]
Nā huaʻōlelo: molybdenum disulfide,mos2 pauda,molybdenum disulfide lubricant
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