Zinc Celluride (ZNTE), ib qho tseem ceeb II-Vi semiconductor cov khoom, yog siv dav hauv infrared nrhiav kom tau, hnub ci hlwb, thiab Optoelectronic khoom siv. Tsis ntev los no nce qib hauv Nanotechnology thiab kev chemisch Greenstr tau ua haujlwm tau zoo rau nws ntau lawm. Hauv qab no yog cov txheej txheem tam sim no ZNTE cov txheej txheem ntau lawm thiab cov ntsiab lus tseem ceeb, suav nrog cov kev coj ua thiab kev txhim kho niaj hnub:
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I. Cov Txheej Txheem Ua Si (Ncaj Ncees Synthesis
1. Cov Khoom Siv Khoom Raw
• High-purity zinc (Zn) thiab qhia (te): Purity ≥99.999% (5N qib), sib xyaw hauv 1: 1 tus qauv 0.
• Cov roj tiv thaiv: kev hloov pauv ntawm Argon (AR) lossis nitrogen (n₂) los tiv thaiv oxidation.
2. Txheej Txheem Flow
• Kauj Ruam 1: Lub tshuab nqus tsev melting synthesis
o Sib tov zn thiab hmoov hmoov hauv lub raj quartz thiab khiav mus rau ≤10⁻³pa.
o Kev pab cuam cua kub: tshav kub ntawm 5-10 ° C / min rau 500-700 ° C, tuav rau 4-6 teev.
o Cov tshuaj tiv thaiv kab sib npaug: Zn + te → δzntezn + teΔznte
• Kauj Ruam 2: Annealing
o Anneal Cov Khoom Crude ntawm 400-500 ° C rau 2-3 teev kom txo cov tawv nqaij tawv nqaij tawv.
• Kauj Ruam 3: Crushing thiab Sieving
o Siv lub pob zeb kom zom cov khoom siv rau hauv lub hom phiaj loj me me (high-zog pob milling rau nanoscale).
3. Cov ntsiab lus tseem ceeb
• Tswj qhov kub thiab txias: ± 5 ° C
• Tus nqi kom txias: 2-5 ° C / Min (kom tsis txhob thermal kev ntxhov siab tawg)
• Cov khoom siv raw qhov loj me: ZN (100-200 mesh), te (200-300 mesh)
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Ii. Cov Txheej Txheem Txhim Kho Niaj Hnub (Solvothermal Txujcal)
Cov txheej txheem huab cua yog cov txheej txheem tseem ceeb rau kev tsim cov nanoscale ZNTE, muab cov txiaj ntsig zoo li cov tswj tau cov khoom me me thiab kev siv hluav taws xob tsawg.
1. Cov ntaub ntawv nyoos thiab cov kuab tshuaj
• Cov Pre-aws: zinc nitrate (Zn (No₃) ₂) thiab sodium sithurite (na₂teo₃) lossis cov hmoov depurium (te).
• Txo cov neeg sawv cev: hydrazine hydrate (N₂₂ H₂o) lossis sodium borohydride (Nabh₄).
• Cov kuab tshuaj: ethylenediamine (eda) lossis dej deionized (di dej).
2. Txheej Txheem Flow
• KAUJ THEEM 1: Tus Ua Haujlwm Tshwj Xeeb
o Din (No₃) ₂ thiab na₂teo₃ hauv 1: 1 tus piv rau hauv cov kuab tshuaj hauv qab nplawm.
• Kauj 2: kev tawm tsam txo qis
o Ntxiv tus neeg sawv cev txo (piv txwv li, N₂₂ H₂o) thiab muab khi rau hauv lub ultrachlave siab.
o Cov Tshuaj Tiv Thaiv:
temperatureE kub: 180-220 ° C
Lub sijhawm: 12-24 teev
Tuab siab: Yus tus kheej (3-5 MPa)
o cov tshuaj tiv thaiv kab sib npaug: ZN2 ++ them nyiaj → znte + bypeping tus neeg sawv cev → znte + byproducts (piv txwv li, h₂o, n₂)
• Kauj ruam 3: Kev Kho Mob Tom Qab
o centrifuge kom cais tawm cov khoom, ntxuav 3-5 zaug nrog ethanol thiab di dej.
o Qhuav nyob rau hauv lub tshuab nqus (60-80 ° C rau 4-6 teev).
3. Cov ntsiab lus tseem ceeb
• Primeor concentration: 0.1-0.5 mol / l
• Ph Kev Tswj: 9-11 (Alkaline tej yam kev xav tau cov tshuaj tiv thaiv)
• Qhov loj me me tswj: kho ntawm cov kuab tshuaj (piv txwv li, eda yields nanase yielous nanoparticles).
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III. Lwm cov txheej txheem siab tshaj plaws
1. Tshuaj Vapor Deposition (CVD)
• Daim Ntawv Thov: Nyias-zaj duab xis npaj (piv txwv li, hnub ci hlwb).
• Cov Prefursors: Diethylzinc (Zn (C₂h₅) ₂) thiab Diethyltellurium (Te (C₂H₅) ₂).
• Cov tsis muaj:
O xa tawm kub: 350-450 ° C
o Cov Carrier Gas: H₂ / Ar Sib xyaw (Flowle tus nqi: 50-100 sccm)
o siab: 10⁻²-10⁻³ torr
2. Neeg kho tshuab aloying (pob milling)
• Nta: kuab-dawb, tsawg kub synthesis.
• Cov tsis muaj:
o pob-rau-hmoov piv: 10: 1
O MILLING LUB SIJ HAWM: 20-40 teev
o Kev Hloov Ceev: 300-500 rpm
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IV. Kev tswj kom zoo thiab yam ntxwv
1. Kev tshuaj xyuas xoo hluav taws xob: x-tshav diffraction (XRD) rau cov qauv siv lead ua (lub ncov siab tseem ceeb ntawm 2θ ≈25.3 °).
2. Morphology tswj: Kev sib kis hluav taws xob tsom tsom iav (TEM) rau nanoparticle loj (raug: 10-50 nm).
3. Kev piv txwv: Lub zog-disperse X-ray spectroscopy (eds) lossis inductively coupled coedplometry (icp-ms) kom paub meej tias ZN ≈1: 1.
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V. Kev Nyab Xeeb thiab Kev Txiav Txim Siab
1. Khib nyaj cov kws kho paa:
2. Hnyav Rov Qab: Rov ua dua cov kuab tshuaj organic (piv txwv li, eda) ntawm distillation.
3. Kev tiv thaiv kev ntsuas: Siv cov qhov ncauj qhov ntswg (rau kev tiv thaiv cov kab mob h orse) thiab cov hnab looj tes xeb-resistant.
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VI. Technological
• Cov khoom ntsuab ntsuab: txhim kho chav a a a axouse kom txo cov organic kuab kev siv.
• Doping Hloov Kho: Txhim Kho Kev Zoo Los ntawm Doping nrog CU, Ag, thiab lwm yam.
• Ntau Lawm Ntau Lawm: Txais kev ntxhib-Flash Reactors kom ua tiav KG-teev Batches.
Lub sij hawm Post: Mar-21-2025