Carbon nanomaterials Folasaga
Mo se taimi umi, na o tagata e iloa e tolu carbon allotropes: taimane, graphite ma amorphous carbon.Ae ui i lea, i le tolu sefulu tausaga talu ai, mai le zero-dimensional fullerenes, tasi-dimensional carbon nanotubes, i le lua-dimensional graphene ua faʻaauau ona maua, o mea fou carbon nanomaterials o loʻo faʻaauau pea ona tosina atu i le lalolagi.Carbon nanomaterials e mafai ona faʻavasegaina i ni vaega se tolu e tusa ai ma le tikeri o le faʻatapulaʻaina o le nanoscale i luga o latou vaʻavaʻa: zero-dimensional, tasi-dimensional ma lua-dimensional carbon nanomaterials.
0-dimensional nanomaterials e faasino i mea o loʻo i le nanometer scale i le tolu-dimensional space, e pei o nano-particles, atomic clusters ma quantum dots.E masani ona fausia i se numera itiiti o atoms ma mole.O loʻo i ai le tele o mea e leai se mea e maua ai carbon nano-mea, e pei o le carbon black, nano-diamond, nano-fullerene C60, carbon-coated nano-metal particles.
O le taimi lava eC60na maua, na amata ona suʻesuʻeina e le au kemisi le avanoa e mafai ai ona latou faʻaogaina i le catalyst.I le taimi nei, o fullerenes ma a latou mea e maua mai i le fanua o mea faʻapitoa e aofia ai vaega nei e tolu:
(1) fullerenes tuusa'o e fai ma fa'aoso;
(2) fullerenes ma a latou mea e maua mai i le avea o se faʻaputuga tutusa;
(3) Fa'aaogāga o Fullerenes ma a latou mea e maua mai i fa'amea fa'ato'ese.
O mea fa'ameamea uamea ua fa'apipi'iina kaponi ose ituaiga fou ole fa'ameamea fa'ameamea ole nano-carbon-metal composite.Ona o le faʻatapulaʻaina o le atigi carbon ma le puipuiga, e mafai ona faʻatapulaʻaina vaega uʻamea i totonu o se avanoa laʻititi ma o le nanoparticles uamea o loʻo ufiufi i totonu e mafai ona tumau i lalo o le aafiaga o le siosiomaga i fafo.O lenei ituaiga fou o zero-dimensional carbon-metal nanomaterials o loʻo i ai uiga faʻapitoa optoelectronic ma o loʻo i ai le lautele tele o faʻaoga i mea faʻafomaʻi, mea faʻamaumau faʻamau, mea faʻapipiʻi eletise, mea eletise eletise lithium ma mea faʻataʻitaʻi.
E tasi-dimensional carbon nanomaterials o lona uiga o electrons fealuai saoloto i na o le tasi itu e le-nanoscale ma o le lafo e laina.O sui masani o mea e tasi-dimensional carbon carbon nanotubes, carbon nanofibers ma mea faapena.O le eseesega i le va o le lua e mafai ona faʻavae i luga o le lautele o mea e iloagofie ai, e mafai foi ona faʻavae i luga o le tikeri o le graphitization o mea e faʻamalamalamaina.E tusa ai ma le lautele o mea o lona uiga: o le lautele D i lalo ifo o le 50nm, o le fausaga gaogao totonu e masani ona taʻua o carbon nanotubes, ma le lautele i le va o le 50-200nm, e tele lava i le laupepa graphite multi-layer curled, ma leai ni fausaga o'oo manino e masani ona ta'ua o carbon nanofibers.
E tusa ai ma le tikeri o le graphitization o mea, o le faʻamatalaga e faasino i le graphitization e sili atu, o le faʻatonuga o lekalafilaupepa faʻatatau tutusa ma le axis tube ua taʻua carbon nanotubes, ae o le tikeri o le graphitization e maualalo pe leai foi fausaga graphitization , O le faatulagaga o le pepa graphite ua disorganized, o mea ma fausaga omo i le ogatotonu ma e oo lava i letele-pa puipui carbon nanotubesua vaevaeina uma i carbon nanofibers.Ioe, o le eseesega i le va o carbon nanotubes ma carbon nanofibers e le o manino i pepa eseese.
I lo matou manatu, e tusa lava po o le a le tikeri o le graphitization o carbon nanomaterials, matou te iloa le eseesega i le va o carbon nanotubes ma carbon nanofibers e faʻavae i luga o le i ai poʻo le leai o se fausaga gaogao.O lona uiga, o le tasi-dimensional carbon nanomaterials faʻamalamalamaina se fausaga gaogao o carbon nanotubes e leai se fausaga omo Pe o le fausaga gaogao e le o manino le tasi-dimensional carbon nanomaterials carbon nanofibers.
Lua-dimensional carbon nanomaterials: Graphene o se sui o le lua-dimensional carbon nanomaterials.O mea fa'atino e lua-dimensional o lo'o fa'atusalia e graphene ua matua vevela lava i tausaga talu ai nei.O lenei mea fetu o loʻo faʻaalia uiga faʻapitoa tulaga ese i masini, eletise, vevela ma maneta.I le fa'atulagaina, o le graphene o le iunite fa'avae lea e fa'atupuina ai isi mea kaponi: e pa'u i luga o le fullerenes e leai-dimensional, fa'apipi'i i le tasi-dimensional carbon nanotubes, ma fa'aputu i graphite tolu-dimensional.
I se aotelega, carbon nanomaterials ua avea pea ma autu vevela i suʻesuʻega nanoscience ma tekinolosi ma ua faia ai suʻesuʻega taua le alualu i luma.Ona o lo latou fausaga tulaga ese ma meatotino sili ona lelei faaletino ma vailaau, carbon nanomaterials e masani ona faaaogaina i mea lithium-ion maa, mea optoelectronic , Catalyst carriers, kemisi ma meaola, mea e teu ai hydrogen ma mea supercapacitor ma isi vaega o popolega.
China Hongwu Micro-Nano Technology Co., Ltd - o le muamua o le gaosiga o mea faʻapipiʻi nano-carbon, o le uluai fale gaosi oloa o carbon nanotubes ma isi mea nano-carbon mo le gaosiga o pisinisi ma le faʻaogaina o le tulaga maualuga o le lalolagi, gaosiga o nano- ua auina atu i fafo mea carbon i le lalolagi atoa, o le tali e lelei.Faʻavae i luga o le fuafuaga faʻavae a le atunuʻu ma le pulega faʻapitoa, Hongwu Nano faʻapipiʻi i maketi, faʻatautaia tekinolosi, e faʻafetaui ai manaʻoga talafeagai o tagata faʻatau e avea ma ana misiona, ma faia taumafaiga le faʻamalosia e faʻaleleia le malosi o le gaosiga o fale gaosi oloa a Saina.
Taimi meli: Iul-13-2020