Raws li tus neeg sawv cev tshaj plaws ib-dimensional nanomaterial,ib leeg-walled carbon nanotubes(SWCNTs) muaj ntau yam zoo heev ntawm lub cev thiab tshuaj.Nrog rau kev tshawb fawb txuas ntxiv mus rau qhov yooj yim thiab siv cov pa roj carbon nanotubes ib leeg, lawv tau pom dav daim ntawv thov kev cia siab nyob rau hauv ntau lub teb, suav nrog nano electronic devices, composite material enhancers, zog cia media, catalysts thiab catalyst carriers, sensors, field emitters, conductive films, bio-nano cov ntaub ntawv, thiab lwm yam., ib co ntawm cov uas twb tiav kev lag luam kev siv.

Mechanical zog ntawm ib leeg-walled carbon nanotubes

Cov pa roj carbon atoms ntawm ib leeg-walled carbon nanotubes tau ua ke nrog CC covalent bonds muaj zog heev.Nws yog speculated los ntawm cov qauv uas lawv muaj siab axial zog, bremsstrahlung thiab elastic modulus.Cov kws tshawb fawb tau ntsuas qhov kev vibration zaus ntawm qhov kawg ntawm CNTs thiab pom tias Young's modulus ntawm carbon nanotubes tuaj yeem ncav cuag 1Tpa, uas yuav luag sib npaug rau Young's modulus ntawm pob zeb diamond, uas yog li 5 npaug ntawm cov hlau.SWCNTs muaj lub zog axial siab heev, nws yog 100 npaug ntawm cov hlau;lub elastic strain ntawm ib leeg-walled carbon nanotubes yog 5%, mus txog 12%, uas yog hais txog 60 npaug ntawm cov hlau.CNT muaj zoo heev toughness thiab bendability.

Ib leeg-walled carbon nanotubes yog cov khoom siv zoo heev rau cov ntaub ntawv sib xyaw, uas tuaj yeem muab lawv cov khoom siv zoo heev rau cov ntaub ntawv sib xyaw, kom cov ntaub ntawv sib xyaw qhia lub zog, toughness, elasticity thiab qaug zog tiv thaiv uas lawv tsis tau xub muaj.Nyob rau hauv cov nqe lus ntawm nanoprobes, carbon nanotubes yuav siv tau los ua scanning sojntsuam tswv yim nrog ntau dua kev daws teeb meem thiab ntau dua qhov tob ntawm nrhiav tau.

Hluav taws xob cov khoom ntawm ib phab ntsa carbon nanotubes

Lub kauv tubular qauv ntawm ib leeg-walled carbon nanotubes txiav txim siab nws cov khoom siv hluav taws xob tshwj xeeb thiab zoo heev.Cov kev tshawb fawb theoretical tau pom tias vim yog kev thauj mus los ntawm cov khoom siv hluav taws xob hauv cov pa roj carbon nanotubes, lub peev xwm nqa ntawm lawv tam sim no siab li 109A / cm2, uas yog 1000 npaug ntau dua li cov tooj liab nrog cov khoom siv zoo.Txoj kab uas hla ntawm ib leeg-walled carbon nanotube yog hais txog 2nm, thiab lub zog ntawm electrons nyob rau hauv nws muaj quantum cwj pwm.Kev cuam tshuam los ntawm quantum physics, raws li txoj kab uas hla thiab kauv hom ntawm SWCNT hloov, lub zog sib txawv ntawm valence band thiab conduction band tuaj yeem hloov los ntawm zero mus rau 1eV, nws cov conductivity tuaj yeem yog xim hlau thiab semiconducting, yog li cov pa roj carbon nanotubes tuaj yeem ua tau. raug kho los ntawm kev hloov lub chirality lub kaum sab xis thiab txoj kab uas hla.Txog tam sim no, tsis muaj lwm yam tshuaj tau pom tias zoo li ib leeg-walled carbon nanotubes tuaj yeem kho qhov sib txawv ntawm lub zog los ntawm kev hloov pauv ntawm cov atoms.

Cov pa roj carbon nanotubes, zoo li graphite thiab pob zeb diamond, yog cov thermal conductors zoo heev.Zoo li lawv cov hluav taws xob conductivity, carbon nanotubes kuj muaj axial thermal conductivity zoo thiab yog cov khoom siv thermal conductive zoo tagnrho.Kev suav cov theoretical qhia tau hais tias cov pa roj carbon nanotube (CNT) cov khoom siv hluav taws xob muaj qhov nruab nrab loj ntawm txoj kev dawb ntawm phonons, phonons tuaj yeem kis tau yooj yim raws cov yeeb nkab, thiab nws cov axial thermal conductivity yog li 6600W / m•K lossis ntau dua, uas zoo ib yam li thermal conductivity ntawm ib txheej graphene.Cov kws tshawb fawb tau ntsuas tias chav tsev kub thermal conductivity ntawm ib leeg-walled carbon nanotube (SWCNT) yog ze rau 3500W / m•K, uas yog ntau dua li pob zeb diamond thiab graphite (~ 2000W / m•K).Txawm hais tias qhov kev sib pauv cua sov ntawm cov pa roj carbon nanotubes nyob rau hauv cov kev taw qhia axial yog siab heev, lawv cov kev sib pauv cua sov nyob rau hauv txoj kab ntsug yog qhov qis, thiab cov pa roj carbon nanotubes raug txwv los ntawm lawv tus kheej cov khoom geometric, thiab lawv qhov nthuav dav yog yuav luag xoom, yog li muaj ntau yam. carbon nanotubes bundled rau hauv ib nras, tshav kub yuav tsis raug xa los ntawm ib tug nanotube mus rau lwm tus.

Qhov zoo tshaj plaws thermal conductivity ntawm ib lub phab ntsa carbon nanotubes (SWCNTs) yog suav tias yog ib qho khoom siv zoo heev rau kev sib cuag ntawm lwm tiam radiators, uas tuaj yeem ua rau lawv ua thermal conductivity tus neeg saib xyuas rau lub computer CPU chip radiators yav tom ntej.Cov pa roj carbon nanotube CPU radiator, uas nws qhov chaw sib cuag nrog CPU yog ua los ntawm cov pa roj carbon nanotubes, muaj cov thermal conductivity 5 npaug ntawm cov khoom siv tooj liab feem ntau.Nyob rau tib lub sij hawm, ib leeg-walled carbon nanotubes muaj daim ntawv thov kev cia siab nyob rau hauv siab thermal conductivity composite cov ntaub ntawv thiab yuav siv tau nyob rau hauv ntau yam kub-kub Cheebtsam xws li cav thiab foob pob ua ntxaij.

Optical zog ntawm ib leeg-walled carbon nanotubes

Cov qauv tshwj xeeb ntawm ib leeg-walled carbon nanotubes tau tsim nws cov khoom siv kho qhov muag tshwj xeeb.Raman spectroscopy, fluorescence spectroscopy thiab ultraviolet-pom-ze infrared spectroscopy tau siv dav hauv kev kawm txog nws cov khoom kho qhov muag.Raman spectroscopy yog cov cuab yeej tshawb nrhiav feem ntau siv rau ib leeg-walled carbon nanotubes.Cov yam ntxwv kev co hom ntawm ib leeg-walled carbon nanotubes nplhaib ua pa kev co hom (RBM) tshwm nyob rau ntawm 200nm.RBM tuaj yeem siv los txiav txim siab qhov microstructure ntawm cov pa roj carbon nanotubes thiab txiav txim siab seb tus qauv puas muaj ib lub phab ntsa carbon nanotubes.

Sib nqus cov khoom ntawm ib phab ntsa carbon nanotubes

Cov pa roj carbon nanotubes muaj cov khoom sib nqus tshwj xeeb, uas yog anisotropic thiab diamagnetic, thiab tuaj yeem siv los ua cov ntaub ntawv mos ferromagnetic.Qee cov phab ntsa ib leeg carbon nanotubes nrog cov qauv tshwj xeeb kuj muaj superconductivity thiab tuaj yeem siv los ua cov xov hlau superconducting.

Gas cia kev ua tau zoo ntawm ib leeg-walled carbon nanotubes

Cov qauv tubular ib puag ncig thiab qhov loj qhov ntev-rau-kab sib piv ntawm ib leeg-walled carbon nanotubes ua rau lub hollow raj kab noj hniav muaj cov nyhuv capillary muaj zog, kom nws muaj qhov tshwj xeeb adsorption, roj cia thiab infiltration yam ntxwv.Raws li cov ntaub ntawv tshawb fawb uas twb muaj lawm, ib leeg-walled carbon nanotubes yog cov khoom siv adsorption nrog lub peev xwm loj tshaj plaws hydrogen, deb tshaj lwm cov khoom siv hydrogen cia, thiab yuav pab txhawb kev tsim cov roj hydrogen.

Kev ua haujlwm catalytic ntawm ib leeg-walled carbon nanotubes

Ib leeg-walled carbon nanotubes muaj cov khoom siv hluav taws xob zoo heev, kev ruaj ntseg tshuaj lom neeg thiab thaj chaw loj tshwj xeeb (SSA).Lawv tuaj yeem siv los ua catalysts lossis catalyst carriers, thiab muaj ntau dua catalytic.Tsis muaj teeb meem nyob rau hauv ib txwm heterogeneous catalysis, los yog nyob rau hauv electrocatalysis thiab photocatalysis, ib-walled carbon nanotubes tau qhia zoo heev daim ntawv thov muaj peev xwm.

Guangzhou Hongwu muab siab thiab ruaj khov zoo ib phab ntsa carbon nanotubes nrog ntev ntev, purity (91-99%), functionalized hom.Tsis tas li dispersion tuaj yeem hloov kho.