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Ma halloysite nanotubes (HNT) ndi ma nanotubes adongo omwe amapezeka mwachilengedwe omwe amatha kugwiritsidwa ntchito pazida zapamwamba chifukwa cha mawonekedwe ake apadera a tubular, kuwonongeka kwachilengedwe, komanso makina komanso mawonekedwe apamwamba.Komabe, kuyanjanitsa kwa nanotubes dongo ndizovuta chifukwa chosowa njira zachindunji.
. . .Ngongole yazithunzi: Captureandcompose/Shutterstock.com
Pachifukwa ichi, nkhani yomwe idasindikizidwa mu nyuzipepala ya ACS Applied Nanomaterials ikupereka njira yabwino yopangira zida za HNT zolamulidwa.Mwa kuyanika ma dispersions awo amadzimadzi pogwiritsa ntchito maginito ozungulira, ma nanotubes adongo adalumikizidwa pagawo lagalasi.
Pamene madzi amasanduka nthunzi, kusonkhezera kwa GNT amadzimadzi kubalalitsidwa amalenga kukameta ubweya mphamvu pa dongo nanotubes, kuwachititsa agwirizane mu mawonekedwe a kukula mphete.Zinthu zosiyanasiyana zomwe zimakhudza kapangidwe ka HNT zidafufuzidwa, kuphatikiza ndende ya HNT, nanotube charge, kuyanika kutentha, kukula kwa rotor, ndi voliyumu ya droplet.
Kuphatikiza pa zinthu zakuthupi, scanning electron microscopy (SEM) ndi polarizing light microscopy (POM) zakhala zikugwiritsidwa ntchito pofufuza ma microscopic morphology ndi birefringence ya mphete zamatabwa za HNT.
Zotsatira zikuwonetsa kuti pamene ndende ya HNT iposa 5 wt%, ma nanotubes adongo amakwaniritsa bwino, ndipo ndende yapamwamba ya HNT imawonjezera kuuma kwapamwamba ndi makulidwe a chitsanzo cha HNT.
Kuphatikiza apo, mawonekedwe a HNT adalimbikitsa kulumikizidwa ndi kuchuluka kwa ma cell a mbewa fibroblast (L929), omwe adawonedwa kuti akukula motsatira dongo la nanotube malinga ndi njira yolumikizirana.Choncho, njira yamakono yophweka komanso yofulumira yogwirizanitsa HNT pazitsulo zolimba ili ndi kuthekera kopanga matrix omvera ma cell.
One-dimensional (1D) nanoparticles monga nanowires, nanotubes, nanofibers, nanorods ndi nanoribbons chifukwa cha makina awo apamwamba, zamagetsi, kuwala, kutentha, biological ndi maginito katundu.
Ma halloysite nanotubes (HNTs) ndi ma nanotubes adongo achilengedwe okhala ndi mainchesi akunja a 50-70 nanometers ndi mkati mwa 10-15 nanometers ndi chilinganizo cha Al2Si2O5(OH)4·nH2O.Chimodzi mwazinthu zapadera za nanotubes ndi zosiyana zamkati / kunja kwa mankhwala (aluminium oxide, Al2O3 / silicon dioxide, SiO2), yomwe imalola kusintha kwawo kosankha.
Chifukwa cha biocompatibility komanso kawopsedwe kakang'ono kwambiri, ma nanotubes adongowa amatha kugwiritsidwa ntchito muzamankhwala, zodzoladzola komanso zosamalira nyama chifukwa ma nanotubes adongo ali ndi chitetezo chabwino kwambiri m'maselo osiyanasiyana.Ma nanotubes adongowa ali ndi zabwino zake zotsika mtengo, kupezeka kwakukulu, komanso kusintha kosavuta kwa mankhwala a silane.
Mayendedwe a kulumikizana ndizomwe zimachitika pakusintha kwa ma cell kutengera mawonekedwe a geometric monga nano/micro grooves pagawo.Ndi chitukuko cha uinjiniya wa minofu, chodabwitsa cha kuwongolera kulumikizana kwagwiritsidwa ntchito kwambiri kukopa ma morphology ndi kapangidwe ka maselo.Komabe, njira yachilengedwe yowongolera kukhudzana sikudziwikabe.
Ntchito yomwe ilipo ikuwonetsa njira yosavuta yopangira mawonekedwe a mphete ya kukula kwa HNT.Pochita izi, mutatha kugwiritsa ntchito dontho la HNT kufalikira kwa galasi lozungulira, dontho la HNT limakanizidwa pakati pa malo awiri olumikizana (wojambula ndi maginito ozungulira) kuti mukhale kubalalitsidwa komwe kumadutsa capillary.Chochitacho chimasungidwa ndikuwongolera.kusungunuka kwa zosungunulira zambiri m'mphepete mwa capillary.
Apa, mphamvu yometa ubweya yopangidwa ndi maginito ozungulira imachititsa kuti HNT pamphepete mwa capillary isungidwe pamalo otsetsereka molunjika.Madzi akamasanduka nthunzi, mphamvu yolumikizirana imaposa mphamvu yolumikizira, kukankhira mzere wolumikizana pakati.Choncho, pansi pa synergistic zotsatira za kukameta ubweya wa ubweya mphamvu ndi capillary mphamvu, pambuyo evaporation wathunthu wa madzi, mtengo-mphete chitsanzo HNT anapanga.
Kuphatikiza apo, zotsatira za POM zikuwonetsa kuyanjana kowonekera kwa mawonekedwe a anisotropic HNT, omwe zithunzi za SEM zimatengera kufananiza kwa dongo nanotubes.
Kuphatikiza apo, ma cell a L929 opangidwa pama nanotubes adongo apachaka okhala ndi magawo osiyanasiyana a HNT adawunikidwa potengera njira yolumikizirana.Pamene, maselo L929 anasonyeza mwachisawawa kugawa pa dongo nanotubes mu mawonekedwe a kukula mphete ndi 0,5 wt.% HNT.Mu mapangidwe a dongo nanotubes ndi NTG ndende ya 5 ndi 10 wt%, maselo elongated amapezeka motsatira malangizo dongo nanotubes.
Pomaliza, mapangidwe a mphete a kukula kwa macroscale HNT adapangidwa pogwiritsa ntchito njira yotsika mtengo komanso yaukadaulo yokonza ma nanoparticles mwadongosolo.Mapangidwe a dongo nanotubes amakhudzidwa kwambiri ndi ndende ya HNT, kutentha, pamwamba pa mtengo, kukula kwa rotor, ndi voliyumu ya droplet.Kuchulukira kwa HNT kuchokera pa 5 mpaka 10 wt.% kunapereka mindandanda yadongo ya nanotubes, pomwe pa 5 wt.% magulu awa adawonetsa mitundu iwiri yowala.
Kuyanjanitsa kwa nanotubes dongo motsatira njira yamphamvu yakumeta ubweya kunatsimikiziridwa pogwiritsa ntchito zithunzi za SEM.Ndi kuwonjezeka kwa ndende NTT, makulidwe ndi roughness wa NTG ❖ kuyanika kuwonjezeka.Chifukwa chake, ntchitoyi ikupereka njira yosavuta yopangira zida kuchokera ku nanoparticles kumadera akulu.
Chen Yu, Wu F, He Yu, Feng Yu, Liu M (2022).Chitsanzo cha "mphete zamtengo" za halloysite nanotubes zomwe zimasonkhanitsidwa ndi chipwirikiti zimagwiritsidwa ntchito kuwongolera ma cell.Ntchito nanomatadium ACS.https://pubs.acs.org/doi/full/10.1021/acsanm.2c03255
Chodzikanira: Malingaliro omwe afotokozedwa pano ndi a mlembi momwe alili ndipo sakuwonetsa malingaliro a AZoM.com Limited T/A AZoNetwork, eni ake ndi wogwiritsa ntchito tsamba lino.Chodzikanirachi ndi gawo limodzi mwamagwiritsidwe ntchito patsamba lino.
Bhavna Kaveti ndi wolemba zasayansi wochokera ku Hyderabad, India.Ali ndi MSc ndi MD kuchokera ku Vellore Institute of Technology, India.mu organic ndi mankhwala chemistry kuchokera ku yunivesite ya Guanajuato, Mexico.Ntchito yake yofufuza ikugwirizana ndi kakulidwe ndi kaphatikizidwe ka mamolekyu a bioactive kutengera ma heterocycles, ndipo ali ndi chidziwitso pakuphatikizika kwamasitepe ambiri komanso magawo ambiri.Pa kafukufuku wake wa udokotala, adagwira ntchito yopanga ma molekyulu osiyanasiyana a heterocycle omangidwa komanso osakanizidwa a peptidomimetic omwe akuyembekezeka kukhala ndi mwayi wopititsa patsogolo ntchito zachilengedwe.Polemba zolemba ndi zolemba zofufuzira, adasanthula chidwi chake cholemba zasayansi komanso kulumikizana.
Cavity, Buffner.(Seputembala 28, 2022).Ma halloysite nanotubes amakula mwa mawonekedwe a "mphete zapachaka" ndi njira yosavuta.Azonano.Inabwezedwa pa Okutobala 19, 2022 kuchokera ku https://www.azonano.com/news.aspx?newsID=39733.
Cavity, Buffner."Ma halloysite nanotubes amakula ngati 'mphete zapachaka' ndi njira yosavuta".Azonano.October 19, 2022.October 19, 2022.
Cavity, Buffner."Ma halloysite nanotubes amakula ngati 'mphete zapachaka' ndi njira yosavuta".Azonano.https://www.azonano.com/news.aspx?newsID=39733.(Kuyambira pa Okutobala 19, 2022).
Cavity, Buffner.2022. Halloysite nanotubes amakula mu "mphete zapachaka" ndi njira yosavuta.AZoNano, idapezeka pa 19 October 2022, https://www.azonano.com/news.aspx?newsID=39733.
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