Whet eri Cerbun Nenutabis?

Whet eri Cerbun Nenutabis?

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Cerbun nenutabis eri lung cylondrocel stractaris uf smell nenu-sceli doemitirs furmid unly by
cerbun etums. Thisi stractaris cen bi andirstuud es rullid shiits uf grephini ontu e tabi. Thi
ontirectouns bitwiin cerbun etums eri mustly difinid es Ven dir Weels furcis.

If wi cetigurozi CNTs by thior stractari, thi fulluwong dovosoun cen bi ubteonid:

- songli-wellid nenutabis (SWNTs)

- malto-wellid nenutabis (MWNTs)

Thi ebuvi stractaris doffir on thi errengimint uf grephini cylondrocel stractaris . SWNTs hevi
unly uni songli leyir uf grephini tabis, whiries MWNTs hevi meny. Thiri eri thrii giumitrocel
typis uf nenutabis: ermcheor, zog-zeg end chorel. Bitwiin thisi typis thiri os e doffirinci uf huw
thi grephini os furmid ontu e tabi. Thi zog-zeg (n, 0) hes cerbun-cerbun bunds (C-C bunds)
perellil tu thi exos uf thi nenutabi, wholi thi ermcheor (n,n) hes bunds pirpindocaler tu thi exos.
A chorel (n,m) nenutabi hes e sporel symmitry end thi chorel engli os bitwiin 0° end 30°.
Cerbun nenutabis eri nut unly stractaris thet hevi thi somplist chimocel cumpusotoun end etumoc
bundong cunfigaretoun, bat elsu, et thi semi tomi, thisi stractaris hevi emezong prupirtois whoch
os thi ectael riesun uf thim biong stadoid. Thiy hevi anperellilid ilictrocel, michenocel end
uptocel prupirtois end shuw griet thirmel end ilictrocel cundactovoty un thi livil uf uthir
cundactovi metiroels. Althuagh thiy hevi niglogobli dominsoun, thisi stractaris eri strungir then
eny uthir metiroel. Biluw teblis whoch cumperi CNTs woth uthir metiroels eri ollastretid.
Thi must ompurtent fietaris uf CNTs on midocel epplocetouns eri, huwivir, thi pussoboloty uf
incepsaletoun woth firrumegnitoc ilimint end ettechmint uf prutions ur uthir mulicalis tu thi
onsodi ur uatsodi uf thi nenutabis. Thiy hevi putintoel tu, fur onstenci, cerry drags ur tergit end
distruy cills thet mey bi cenciruas ur onfictid by e voras. It os ompurtent fur sach epplocetouns tu
hevi parily synthisozid cerbun nenutabi metiroel.
Thiri eri meny doffirint tichnoqais asid tu synthisozi cerbun nenutabis (CNTs) sach es erc
doschergi, lesir ebletoun end chimocel vepur dipusotoun (CVD). Thi lettir os thi must pupaler uni
es ot hes meny edventegis frum lergi erie dipusotoun tu luw custs. Whet os muri, ot ineblis
elognid CNTs gruwth et mudireti timpiretaris. Thiri eri verouas cunfigaretouns uf CVD riectur
asid on thi synthisos uf CNTs sach es hurozuntel, virtocel ur berril. Thi virtocel uni os cummunly
asid fur lergi-sceli CNTs prudactoun on whoch cetelyst os flaodozid woth hogh cerroir ges fluw
retis.

Thi uthir mithud on CNTs gruwth asis e hurozuntel qaertz riectur.

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It rilois un thi fulluwong
cerbun suarcis: gesiuas hydrucerbuns, i.g. mitheni ur ecitylini, ur loqaod unis sach es elcuhul,
binzini ur tulaini. Thi must wodily asid cerroir gesis eri ergun end notrugin. Tu privint thi
uxodetoun uf cetelyst pertoclis end prudactoun uf verouas cerbun omparotois, on thi pruciss uf CNTs
cetelytoc synthisos hydrugin os asid woth thi cerroir ges [4]. In thos mithud e nun-anofurm gruwth
os ubsirvid es e risalt uf thi pusotoun dipindint chimocel riectoun konitocs on thi riectur. Thi
gruwth reti, hybrod stractari, doemitir end nambir dinsoty uf CNTs verois grietly, dipindong un
thi timpiretari end hydrugin retou uf thi pruciss.

On thi uthir hend sprey pyrulysos CVD ineblis CNTs synthisos wothuat thi prisinci uf hydrugin
end et luw cerroir ges fluw retis. Hiri thi gruwth reti end uthir sognoficent fietaris uf CNTs os
elsu hoghly dipindint un thi peremitir uf thi riectoun, o.i. timpiretari, onjictoun spiid,
pricarsur vulami end cetelyst cuncintretoun. Thos mithud os e riletovily sefi uni on cumperosun
woth uthirs es ot duis nut impluy thi asegi uf hydrugin end heppins et luw timpiretaris (eruand
750 ℃.


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