Ma ke ʻano he nanomaterial one-dimension nui loa,nanotubes kalapona pakahi（SWCNTs） loaʻa nā waiwai kino a me kemika maikaʻi loa.Me ka hoʻomau ʻana i ka noiʻi hohonu e pili ana i ke kumu a me ka hoʻohana ʻana i nā nanotubes kalapona paʻa hoʻokahi, ua hōʻike lākou i nā manaʻo noiʻi ākea ma nā kahua he nui, me nā mea uila nano, mea hoʻonui mea hoʻohui, media mālama ikehu, catalysts a me catalyst carriers, sensors, field. emitters, conductive films, bio-nano material, etc., kekahi o ia mau mea ua hoʻokō i nā noi ʻoihana.

Nā waiwai mīkini o nā nanotubes kalapona pā hoʻokahi

Hoʻohui ʻia nā ʻātoma kalapona o nā nanotubes kalapona pā hoʻokahi me nā paʻa covalent CC ikaika loa.Ua manaʻo ʻia mai ka hale e loaʻa iā lākou ka ikaika axial kiʻekiʻe, bremsstrahlung a me ka modulus elastic.Ua ana nā mea noiʻi i ke alapine haʻalulu o ka hopena manuahi o CNTs a ʻike i ka modulus o ka carbon nanotubes o ka Young hiki ke hiki i 1Tpa, kahi kokoke like me ka modulus daimana o ka Young, ʻo ia ma kahi o 5 mau manawa o ke kila.Loaʻa i nā SWCNT ka ikaika axial kiʻekiʻe loa, ma kahi o 100 mau manawa o ke kila;ʻO ke kānana elastic o nā nanotubes kalapona paʻa hoʻokahi he 5%, a hiki i ka 12%, ʻo ia ma kahi o 60 mau manawa o ke kila.Loaʻa i ka CNT ka paʻakikī a me ka liʻiliʻi.

ʻO nā nanotubes kalapona pā hoʻokahi he mau mea hoʻoikaika maikaʻi loa no nā mea hoʻohuihui, hiki iā ia ke hāʻawi i kā lākou mau waiwai mechanical maikaʻi loa i nā mea i hoʻohui ʻia, no laila e hōʻike ana nā mea hana i ka ikaika, ʻoʻoleʻa, elasticity a me ke kūpaʻa luhi ʻaʻole lākou i loaʻa mua.Ma nā huaʻōlelo o nā nanoprobes, hiki ke hoʻohana ʻia nā nanotubes kalapona e hana i nā ʻōlelo aʻoaʻo scanning probe me ka hoʻonā kiʻekiʻe a me ka hohonu o ka ʻike.

Nā waiwai uila o nā nanotubes kalapona pā hoʻokahi

ʻO ke ʻano tubular spiral o nā nanotubes kalapona paʻa hoʻokahi e hoʻoholo i kona ʻano uila kūikawā a maikaʻi loa.Ua hōʻike ʻia nā haʻawina Theoretical ma muli o ka lawe ʻana i ka ballistic o nā electrons i loko o nā nanotubes carbon, ʻoi aku ka nui o ka lawe ʻana i kēia manawa i 109A/cm2, ʻo ia ka 1000 mau manawa kiʻekiʻe ma mua o ke keleawe me ka conductivity maikaʻi.ʻO ke anawaena o kahi nanotube kalapona pā hoʻokahi ma kahi o 2nm, a ʻo ka neʻe ʻana o nā electrons i loko o ia mea he ʻano quantum.Hoʻopili ʻia e ka quantum physics, e like me ka hoʻololi ʻana o ke anawaena a me ke ʻano spiral o SWCNT, hiki ke hoʻololi ʻia ke āpau o ka ikehu o ka hui valence a me ka hui conduction mai kahi kokoke i ʻole a hiki i 1eV, hiki i kona conductivity ke metala a me ka semiconducting, no laila hiki ke conductivity o carbon nanotubes. e hoʻololi ʻia ma ka hoʻololi ʻana i ke kihi chirality a me ke anawaena.I kēia manawa, ʻaʻohe mea ʻē aʻe i ʻike ʻia e like me ka nanotubes kalapona paʻa hoʻokahi e hiki ke hoʻololi like i ka ʻākea ikehu ma ka hoʻololi wale ʻana i ka hoʻonohonoho ʻana o nā mana.

ʻO nā nanotubes kalapona, e like me ka graphite a me ke daimana, he mea hoʻokele wela maikaʻi loa.E like me kā lākou conductivity uila, ʻoi aku ka maikaʻi o nā nanotubes carbon axial thermal conductivity maikaʻi loa.Hōʻike ʻia nā helu ʻana o ka carbon nanotube (CNT) i kahi ala manuahi nui o nā phonons, hiki ke hoʻouna ʻia nā phonons ma ka paipu, a ʻo kona axial thermal conductivity ma kahi o 6600W/m•K a i ʻole, he like ia me ka wela o ka graphene papa hoʻokahi.Ua ana nā mea noiʻi ʻo ka wela wela o ka lumi o ke kalapona nanotube paʻa hoʻokahi (SWCNT) kokoke i 3500W/m•K, ʻoi aku ka nui ma mua o ka daimana a me ka graphite (~ 2000W/m•K).Oiai ka wela hoololi hana o kalapona nanotubes i ka axial kuhikuhi ua kiʻekiʻe loa, ko lakou wela hoololi hana ma ka vertical kuhikuhi mea haʻahaʻa, a kalapona nanotubes i kaupalena 'ia e ko lakou mau geometric waiwai, a me ko lakou hoonui ana ua aneane zero, pela no ka nui. ʻAʻole e hoʻoneʻe ʻia ka wela mai kahi nanotube kalapona i kekahi.

ʻO ka conductivity thermal maikaʻi loa o nā nanotubes kalapona paʻa hoʻokahi (SWCNTs) i manaʻo ʻia he mea maikaʻi loa ia no ka ʻili pili o nā radiators e hiki mai ana, hiki iā lākou ke hoʻolilo iā lākou i mea hoʻokele wela no nā radiator chip CPU kamepiula i ka wā e hiki mai ana.ʻO ka radiator nanotube CPU carbon nanotube, nona ka ʻili pili me ka CPU i hana piha ʻia me ka carbon nanotubes, he 5 mau manawa ka wela o nā mea keleawe maʻamau.I ka manawa like, loaʻa i nā nanotubes kalapona paʻa hoʻokahi nā manaʻo noi maikaʻi i nā mea hoʻohuihui thermal conductivity kiʻekiʻe a hiki ke hoʻohana ʻia i nā ʻāpana wela kiʻekiʻe e like me nā mīkini a me nā pōhaku.

ʻO nā waiwai opi o nā nanotubes kalapona pā hoʻokahi

ʻO ke ʻano kūʻokoʻa o nā nanotubes kalapona paʻa hoʻokahi i hana i kāna mau hiʻohiʻona ʻokoʻa.ʻO Raman spectroscopy, fluorescence spectroscopy a me ultraviolet-visible-near infrared spectroscopy ua hoʻohana nui ʻia i ke aʻo ʻana i kāna mau waiwai optical.ʻO Raman spectroscopy ka mea hana maʻamau i hoʻohana ʻia no nā nanotubes kalapona pā hoʻokahi.Hōʻike ʻia ke ʻano haʻalulu ʻano o nā nanotubes kalapona paʻa hoʻokahi i ke ʻano haʻalulu hanu hanu (RBM) ma kahi o 200nm.Hiki ke hoʻohana ʻia ʻo RBM no ka hoʻoholo ʻana i ka microstructure o nā nanotubes kalapona a hoʻoholo inā loaʻa i ka hāpana nā nanotubes kalapona pā hoʻokahi.

Nā waiwai mākēneki o nā nanotubes kalapona pā hoʻokahi

Loaʻa i nā carbon nanotubes nā waiwai magnetic kūikawā, he anisotropic a me diamagnetic, a hiki ke hoʻohana ʻia e like me nā mea ferromagnetic palupalu.ʻO kekahi mau nanotubes kalapona pā hoʻokahi me nā hale kikoʻī he superconductivity a hiki ke hoʻohana ʻia e like me nā uea superconducting.

ʻO ka hana mālama kinoea o nā nanotubes kalapona paʻa hoʻokahi

ʻO ka hoʻokahi-dimensional tubular hana a me ka nui lōʻihi-a-diameter lākiō o hookahi-paia kalapona nanotubes hana i ka hollow tube ana i ka ikaika capillary hopena, no laila, he kū hoʻokahi adsorption, kinoea waihona a me ka infiltration ano.Wahi a nā hōʻike noiʻi e kū nei, ʻo nā nanotubes kalapona paʻa hoʻokahi nā mea adsorption me ka nui o ka nui o ka mālama ʻana i ka hydrogen, ʻoi aku ma mua o nā mea mālama hydrogen maʻamau, a e kōkua i ka hoʻomohala ʻana i nā pūnaeau wahie hydrogen.

ʻO ka hana catalytic o nā nanotubes kalapona pā hoʻokahi

Loaʻa i nā nanotubes kalapona paʻa hoʻokahi i ka conductivity uila maikaʻi loa, ke kūpaʻa kemika kiʻekiʻe a me kahi ʻāpana kikoʻī nui (SSA).Hiki iā lākou ke hoʻohana ʻia e like me nā catalysts a i ʻole nā ​​​​mea lawe catalyst, a loaʻa iā lākou ka hana catalytic kiʻekiʻe.ʻAʻohe mea i ka catalysis heterogeneous kuʻuna, a i ʻole i ka electrocatalysis a me ka photocatalysis, ua hōʻike ʻia nā nanotubes kalapona paʻa hoʻokahi i nā mana hoʻohana nui.

Hāʻawi ʻo Guangzhou Hongwu i nā nanotubes kalapona paʻa kiʻekiʻe a paʻa me ka lōʻihi like ʻole, ka maʻemaʻe (91-99%), nā ʻano hana.Hiki ke hoʻopilikino ʻia ka dispersion.