Boron Nitride Nanotubes – Exfoliated mo fakamovetevete ʻo fakaʻaongaʻi ʻa e Sonication

ʻOku lava lelei hono fakaʻaongaʻi ʻo e Ultrasonication ki he ngaue mo e fakamovetevetea ʻo boron nitride nanotubes (BNNTs). ʻOku ʻomi ʻe he sonication malohi ʻa e homogeneous detangling mo e tufakiʻanga naunau ʻi ha ngaahi founga kehekehe pea ʻoku ʻi ai ha founga ngaue mahuʻinga ke fakahoko ʻaki ʻa e BNNTs ki he ngaahi founga fakaleleiʻi mo e matrices.

Ultrasonic Processing of Boron Nitride Nanotubes

Ke lava ʻo fakahoko boron nitride nanotubes (BNNTs) pe boron nitride nanostructures (BNNs) hange ko e nanosheets mo e nanoribbons ki ha ngaahi founga huhuʻa pe polymeric matrices, ʻoku fie maʻu ha founga lelei mo falalaʻanga. ʻOku ʻomi ʻe ultrasonic fakamovetevetea ʻa e ivi ʻoku fie maʻu ke exfoliate, detangle, fakamovetevetea, mo functionalize boron nitride nanotubes mo boron nitride nanostructures ʻaki ʻa e lavameʻa maʻolunga. ʻOku hanga ʻe he ngaahi fakangatangata mapuleʻingofua ʻo e ngaue malohi fakaʻata (ʻa ia ko e ivi, amplitude, taimi, mafana, mo e malohi) ʻo fakaʻata ke liliu fakafoʻituitui ʻa e ngaahi tuʻunga ʻo e ngaue ki he taumuʻa ʻo e founga ngaue kuo fakataumuʻa ki ai. ʻOku ʻuhinga ʻeni ultrasonic ʻe lava ke fakatonutonu ʻa e malohi ʻo e ngaahi meʻa pau (tuʻunga lelei ʻo e BNNTs, solvent, mo e ala meʻa pehe), ʻo maʻu ai ha ngaahi ola ʻoku lelei.

Boron nitride nanotubes (BNNTs) can be synthesized using sonication

Ultrasonic hala ke fakatahatahaʻi boron nitride nanocups
(ako mo e fakatata: Iu et Al. 2012)

ʻOku ʻufiʻufi ʻe hono fakaʻaongaʻi ʻo e ultrasonic BNNT mo BNN ʻa e ngaahi meʻa kotoa mei he homogeneous ʻo e moxagonal ʻe ua ʻoku huʻi boron nanostructures (2D-BNNs), ki heʻenau functionalization mo e kemikale exfoliation ʻo e mono-hexagonal boron nitride. ʻI lalo, ʻoku tau ʻoatu ki he ngaahi fakaikiiki ʻi ultrasonic fakamovetevete, exfoliation, mo e functionalization ʻo BNNTs mo BNNs.

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Dispersion of boron nitride nanotubes using high-intensity ultrasonicators from Hielscher Ultrasonics

Fokotuʻu ʻo ultrasonic dispersers (2x UIP1000hdT) ki he ngaue boron nitride nanotubes ʻi he meʻafua ki he ngaahi meʻa fakapisinisi

Ultrasonic fakamovetevete ʻo Boron Nitride Nanotubes

ʻI he taimi ʻoku fakaʻaongaʻi ai boron nitride nanotubes (BNNTs) ke fakamalohia ʻaki e polymers pe synthesize naunau foʻou, ʻoku fie maʻu ha teunga mo ha falalaʻanga ki he matrix. ʻOku lahi hono fakaʻaongaʻi ʻo e ultrasonic dispersers ke fakamovetevetea nano ngaahi naunau hange ko e CNTs, meʻa nanoparticles, ngaahi konga mahuʻinga mo e ngaahi faʻahinga kehe ʻo e nano ki ha konga hono ua.
Kuo lava lelei hono fakaʻaongaʻi ʻo e ultrasonic momoiki ke detangle mo tufaki BNNTs uniformly ʻi he aqueous mo e ngaahi founga ʻoku ʻikai aqueous kau ai ʻa e ethanol, PVP ethanol, TX100 ethanol pea pehe ki ha ngaahi polymers kehekehe (e.g. polyurethane).
Ko e meʻa angamaheni ʻoku fakaʻaongaʻi surfactant ke puke ha ultrasonically kuo teuteuʻi ʻaki ʻa e BNNT ko ha 1% wt ʻelemeniti ko dodecyl sulfate (FuʻUʻULI). Hange ko ʻeni, 5 mg BNNTS ʻoku ultrasonically fakamovetevete ia ʻi ha foʻi hina ʻoku ʻi ai e 5 mL ʻo e 1% uat. ko e founga fakaleleiʻi ʻo e ultrasonic fekumi-type fakamovetevete hange ko e UP200St (26kHz, 200W).

Aqueous e fakamovetevete ʻo BNNTs ʻo fakaʻaongaʻi fakaʻata

Koeʻuhi ko ʻenau veeni malohi Der Waals ngaahi fengaueʻaki mo e hydrophobic, boron nitride nanotubes ʻoku ʻikai totonu ke matoʻo atu ia ʻi he ngaahi founga ʻoku fakavaʻe ʻaki e vai. Ke fakaleleiʻi ʻa e ngaahi palopalema ko ʻeni, Jeon et Al. (2019) fakaʻaongaʻi ʻa e Pluronic P85 mo e F127, ʻa ia ʻoku fakatou ʻi ai hydrophilic kulupu mo hydrophobic kulupu ke functionalize BNNT ʻi sonication.

Length reduction and cutting of boron nitride nanotubes (BNNTs) by high-intensity ultrasonication

Ngaahi ʻimisi ʻo shorterned BNNTs hili ha ngaahi sonication kehekehe. Hange ko ʻene ha atu, ʻoku holo ʻa e loloa ʻo e ngaahi BNNTs ko ʻeni ʻi he lahi fakakatoa ʻo e taimi sonication.
(ako mo e fakatata: Lee et Al. 2012)

Surfactant taʻetotongi Exfoliation ʻo Boron Nitride Nanosheets fakaʻaongaʻi ʻa e Sonication

Lin et Al. (2011) fakahoko ha founga maʻa ʻo e exfoliation mo e fakamovetevetea ʻo hexagonal boron nitride (h-BN). ʻOku angamaheni ʻaki hono fakakaukauʻi ʻa Hexagonal boron nitride ke insoluble ʻi he vai. Neongo ia, naʻa nau lava ʻo fakahaaʻi ʻoku ola lelei ʻa e vai ke exfoliate ʻa e layered h-BN ʻo fakaʻaongaʻi ʻa e ultrasonication, faʻu ʻo e "maʻa" aqueous dispersions ʻo h-BN nanosheets taʻe fakaʻaongaʻi ʻa e surfactants pe functionalization. Naʻe faʻu ʻe he ultrasonic exfoliation ko ʻeni ha fanga kiʻi layered h-BN nanosheets pea pehe ki monolayered nanosheet mo nanoribbon fakafaʻahinga. Ko e lahi taha ʻo e ngaahi nanosheets naʻe holoki lateral lalahi, ʻa ia naʻe pehe ko hono kosi ʻo e ngaahi laʻipepa ʻa e matuʻa h-BN naʻe fakaʻaiʻai ʻe he sonication tokoni hydrolysis (corroborated ʻe he sivi mo e ngaahi ola spectroscopy). Naʻe toe poupouʻi foki ʻe he ultrasonically hydrolysis ʻa e exfoliation ʻo h-BN nanosheets ko e tokoni ki he ola ʻo e solovaʻanga. Naʻe fakahaaʻi ʻe he nanosheets h-BN ʻi he ngaahi aqueous ko ʻeni ʻo e "maʻa" dispersions ʻa e founga lelei ʻo fakafou ʻi he ngaahi founga fakaleleiʻi ʻoku ne pukepuke honau ʻulungaanga fakatuʻasino. Naʻe toe fakahaaʻi foki ʻe he nanosheets kuo fakamovetevete h-BN ʻi he vai ha ʻofa malohi ki polotini hange ko ferritin, ʻo fokotuʻu ange naʻe lava ke maʻu ʻa e nanosheet ʻi ʻolunga ki ha toe piokalafi-conjugations.

Ultrasonic nano-fakamovetevetea mo e ultrasonicator UP400St

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Ko e founga ʻo e sono fakamisini ʻoku ne fakaʻaongaʻi ʻa e ultrasonic cavitation mo e ngaahi malohi ʻo e kosi ko ha founga anga fakaesino moʻoni ia, ʻa ia kuo fakamoʻoniʻi ʻoku malava ke debundling BNNTs mo fakatuʻumaʻu fakafoʻituitui BNNTs lolotonga hono tauhi ʻenau angatonu mo e ngaahi koloa ʻoku ʻikai ke lelei. Ko hono fakaʻaongaʻi ʻo e ivi ultrasonic feʻunga (ʻa e/mL), hange ko hono fakatonutonu amplitude mo sonication taimi, ultrasonic ʻe lava ke detangle mo fakamovetevetea ʻa BNNTS uniformly. ʻE lava ke fakaʻaongaʻi ʻa e amplitudes maʻolunga ange mo e sonication loloa ange kapau ʻoku totonu ke fakasiʻisiʻi ʻa e loloa ʻo e boron nitride nanotubes. Laukonga lahi ange fekauʻaki mo ultrasonic lahi hono fakasiʻisiʻi mo hono kosi loloa ʻo e BNNTs ʻi he konga hono hoko.

Ultrasonic lahi hono fakasiʻisiʻi mo hono kosi ʻo Boron Nitride Nanotubes

ʻOku ʻi ai ha fatongia mahuʻinga ʻo e loloa ʻo boron nitride nanotubes ʻi he taimi ʻoku hoko mai ai ki he ngaue ʻa BNNTs ki polymers mo ha ngaahi naunau functionalized kehe. Ko ia ko ha foʻi moʻoni mahuʻinga ia naʻe ʻikai ngata pe ʻi he lava ʻe sonication ʻo e BNNTs ʻi solvent ʻo fakamavahevaheʻi fakafoʻituitui ʻa e BNNTs, ka naʻa ne toe fakanounouʻi foki ʻa e faʻunga ʻo e kofe BNNTs ʻi he ngaahi tuʻunga ʻoku puleʻi. ʻOku maʻu ʻe he BNNTs fakanounou ha faingamalie maʻulalo ange bundling lolotonga hono fakatahatahaʻi e teuteu. Naʻe fakahaaʻi ʻe Li ʻi he Al. (2012) ʻe lava ke fakanounouʻi lelei ʻa e loloa ʻo e functionalized BNNTs mei he >10μm ki ∼500nm ʻe ultrasonication. ʻOku fokotuʻu mai ʻe heʻenau ngaahi fakatotolo ʻahiʻahi ʻoku fie maʻu ʻa e ultrasonic lelei ʻo e BNNT ʻi he founga fakaleleiʻi ki hono kosi ʻo e lahi ʻo e size ʻo e BNNT pea kosi.

Boron nitride nanotubes can be efficiently dispersed and reduced in length using high-intensity ultrasonication

(f) dispered mPEG-DSPE/BNNTs ʻi he vai (Hili e 2 h ʻo sonication). (h) fakafofonga Schematic ʻo ha BNNT functionalized ʻe ha mPEG-DSPE molecule
(ako mo e fakatata: Lee et Al. 2012)

Ultrasonic dispersion is a well established technique to disperse and exfoliate boron nitride nanotubes.

Ultrasonic homogenizer UP400St ki he fakamovetevetea ʻo boron nitride nanotubes (BNNTs)

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Ngaue Ultrasonicators maʻolunga ki he BNNT processing

The smart features of Hielscher ultrasonicators are designed to guarantee reliable operation, reproducible outcomes and user-friendliness. Operational settings can be easily accessed and dialled via intuitive menu, which can be accessed via digital colour touch-display and browser remote control. Therefore, all processing conditions such as net energy, total energy, amplitude, time, pressure and temperature are automatically recorded on a built-in SD-card. This allows you to revise and compare previous sonication runs and to optimize the exfoliation and dispersion process of boron nitride nanotubes and nanomaterials to highest efficiency.
ʻOku fakaʻaongaʻi ʻa e hielscher Ultrasonics systems ʻi he funga ʻo e mamani ki hono ngaohi ʻo e tuʻunga lelei maʻolunga BNNTs. Hielscher ʻe faingofua pe hono fakalele ʻo e ngaahi meʻa lalahi ultrasonicators amplitudes ʻi he tafa hokohoko (24/7/365). Amplitudes ʻo aʻu ki he 200μm ʻe faingofua pe hono maʻu e ngaahi meʻa angamaheni sonotrodes (ultrasonic probes/meʻatui). ʻOku lava ke maʻu ha amplitudes maʻolunga ange fakapatonu ultrasonic sonotrodes. Koeʻuhi ko ʻenau robustness mo hono tokangaʻi maʻulalo, ʻoku faʻa fakahu ai ʻetau ngaahi polokalama exfoliation ultrasonic mo e fakamovetevetea ki he ngaahi founga ngaue mamafa pea mo e ngaahi ʻatakai ʻoku femoʻuekina.
Ultrasonics 'o e Hielscher’ ʻe lava ʻe he ultrasonic lalahi processors ʻo fakahaofi ha amplitudes maʻolunga ʻaupito. Amplitudes ʻo aʻu ki 200μm ʻe faingofua pe ke lele hokohoko ʻi he tafa 24/7. ʻOku lava ke maʻu ha amplitudes maʻolunga ange fakapatonu ultrasonic sonotrodes.
Hielscher ultrasonic processors for the dispersion and exfoliation of boron nitride nanotubes as well as CNTs and graphene are already installed worldwide on commercial scale. Contact us now to discuss your BNNT manufacturing process! Our well-experienced staff will be glad to share more information on the exfoliation process, ultrasonic systems and pricing!
'Oku 'omi 'e he e tepile 'i lalo ha faka'ilonga ia 'o e tu'unga 'o e ngaue ki he fakafuofua'i 'o e hotau ultrasonicators:

Kulupu (batch) 'o e tohi 'Oku tafe mai 'a e 'ea 'Oku fokotu'u atu 'a e ngaahi me'angaue
mL 'o e 1 ki he 500 10 ki he 200mL/miniti 'e UP100H
mL 'i he 10 ki he 2000 20 ki he 400mL/miniti 'e UP200Ht, UP400St
0.1 ki he 20L 0.2 ke 4L/miniti 'e UIP2000hdT
10 ki he 100L 2 ki he 10L/miniti 'e UIP4000hdT
n.a. 10 ki he 100L/miniti 'e UIP16000
n.a. lalahi fakataha'i 'o e UIP16000

Fetu'utaki mai kiate kimautolu! / Kole kiate kitautolu!

Kole ki ha fakamatala lahi ange

Kataki 'o ngaue 'aki e foomu 'i lalo ke kole ha toe fakamatala ki he ultrasonic processors, faka'aonga'i mo e totongi. Te mau fiefia ke alea'i e founga 'oku mo 'i ai mo ho'omou ngaahi fie ma'u ultrasonic he polokalama!









Kataki 'o fakatokanga'i ange 'etau Tu'utu'uni totonu fakatautaha.


Ultrasonic high-shear homogenizers are used in lab, bench-top, pilot and industrial processing.

Hielscher Ultrasonics ʻa e ngaohiʻanga koloa maʻolunga ultrasonic homogenizers ki hono tuifio ʻo e ngaahi polokalama, fakamovetevetea, emulsification mo e toʻo hingoa ʻi he fale fakatotolo fakakemi, pailate mo e meʻafua ki he ngaahi meʻa fakapisinisi.

Ngaahi tohi/fakamo'oni fakafolofola



Ngaahi mo'oni'i me'a 'oku mahu'inga ke 'ilo'i

Boron Nitride Nanotubes mo Nanomaterials

ʻOku ʻomi ʻe Boron nitride nanotubes ha faʻunga ʻatomi makehe kuo fakatahatahaʻi ʻo boron mo nitrogen atoms fokotuʻutuʻu ʻi ha netiueka hexagonal. ʻOku ʻomi ʻe he faʻunga ko ʻeni ʻa e bnnt ha ngaahi koloa lelei lahi hange ko e malohi fakamisini, valaloto maʻolunga conductivity, electrically ʻulungaanga maluʻi, piezoelectric koloa, ʻahiʻahiʻi ha niutuloni shielding malava, mo oxidation fakafepaki. ʻE lava foki ke mamataʻi ʻa e 5 eV band ʻi hono fakaʻaongaʻi ʻo e ngaahi meʻa fakaʻuhila ʻi he tafaʻaki ʻuhila, ʻa ia ʻoku ne ʻai BNNTs malie ki he ngaahi meʻangaue fakaʻilekitulonika. ʻIkai ngata ai, ʻoku maʻu ʻe BNNTs ha oxidation maʻolunga ʻo aʻu ki he 800 ° c, fakahaaʻi ha piezoelectricity lelei, pea ʻe lava pe ke hoko ko ha naunau tukuʻanga koloa lelei fakapaaki ʻo e.

BNNTs vs Graphene: BNNTs ko e faʻunga analogs ia ʻo graphene. Ko e tefitoʻi faikehekehe ʻo e boron nitride-based nanomaterials mo honau kaunga-kaponi ko e natula ia ʻo e ngaahi haʻi ʻi he vahaʻa ʻo e atoms. ʻOku maʻu ʻe he haʻi F-C ʻi he kaponi nanomaterials ha ʻulungaanga lelei moʻoni, ka ʻoku ʻomi ʻe he ngaahi haʻi ʻo e ionic ha ʻulungaanga fakakonga koeʻuhi ko e ngaahi hoa −ʻi sp2 hybridized B-N. (FF. Emanet et Al. 2019)

BNNTs v. kaponi Nanotubes: Boron nitride nanotubes (BNNTs) fakaʻaliʻali ha tubular tatau nanostructure ki he kaponi nanotubes (CNTs) ʻa ia boron mo nitrogen atoms fokotuʻutuʻu ʻi ha netiueka hexagonal.


High performance ultrasonics! Hielscher's product range covers the full spectrum from the compact lab ultrasonicator over bench-top units to full-industrial ultrasonic systems.

Hielscher Ultrasonics e ngaohiʻanga koloa maʻolunga ultrasonic homogenizers mei he Loki fakasaienisi ki he lahi ʻo e lalahi.