Ahoana ny fanomanana sy ny famaritana ny graphite oxide sy ny graphene taratasy manify

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Ny sosona graphite oxidized taratasy manify dia nomanina tamim-pahombiazana tamin&39;ny alàlan&39;ny fomba Hummers novaina, ary ny sosona graphite oxidation toy ny takelaka voaomana dia nihena ho nanomaterial graphene misy hydrazine. Ny vokatra synthesis avy amin&39;ny Fourier transform infrared spectroscopy (FT-IR), Raman Spectroscopy (RS), X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Transmitting Electroractor (TEM), ary Agency (AFM), sns. Ny rafitra sy ny fampisehoana dia miavaka.

Ny valiny dia mampiseho fa ny hatevin&39;ny graphene dia 0.36 nm, ny isan&39;ny sosona dia 3. Ankoatr&39;izay, ny mekanika fanehoan-kevitry ny fomba Hummers novaina dia nomanina tamin&39;ny alàlan&39;ny mekanika fanehoan-kevitry ny graphite oxidation toy ny taratasy manify, ary nodinihina ny fizotry ny fanehoan-kevitra simika nandritra ny oxidation ny oxidation graphite.

Tamin&39;ny taona 2004, GEIM et al, dia nanomana graphene atomika atomika roa-dimensional vaovao misy sosona atomika karbônika hybrida SP2 amin&39;ny fampiasana fomba fanalana mekanika. Ny singa fototra fototra amin&39;ny graphene dia peratra benzene enina yuan, izay 0.34 nm fotsiny.

Noho izany, ny graphene dia manana fananana simika ara-batana tena tsara, toy ny 100 heny ny tanjaky ny vy, hatramin&39;ny 130gPa, ny fivezivezena mpitatitra dia mahatratra 15000 cm2 / (v · s), ny conductivity mafana dia 5000W / (m · K). Ankoatr&39;izay, ny graphene dia manana toetra manokana toy ny fiantraikan&39;ny Hall quantum amin&39;ny efitrano sy ny toetran&39;ny ferromagnetika amin&39;ny efitrano. Amin&39;izao fotoana izao, ny fomba fanomanana ny graphene dia indrindra indrindra micro-mekanika fomba fanesorana, simika etona deposition, simika redox fomba, kristaly epitaxial fitomboana fomba sy solvent fomba hafanana.

Anisan&39;izany, ny fomba fanalana micromechanical dia afaka manomana graphene amin&39;ny haben&39;ny micron, saingy ambany ny fifehezana, sarotra ny manatratra ny famokarana lehibe. Ny fomba fitomboan&39;ny epitaxial kristaly dia mora amin&39;ny fanamboarana noho ny endriky ny kristaly SiC, ka ny faritra midadasika, ny hateviny dia mitovy amin&39;ny graphene iray. Ny fomba famafazana entona simika (CVD) dia substrate misy kristaly tokana metaly na sarimihetsika metaly, izay afaka mampitombo ny sosona graphene sosona manify, fa ny fahadiovan&39;ny graphene dia tsy avo, ary tsy azo tratrarina ny famokarana lehibe.

Ny fomba hafanana solvent dia noho ny fepetra henjana toy ny hafanana avo sy ny tsindry avo, ary ny conductivity vokatra dia ambany, ary tsy misy ny mety hisian&39;ny famokarana faobe. Ny fomba fampihenana redox simika dia ny manomana graphene amin&39;ny alàlan&39;ny fanesorana ultrasonic sy ny fampihenana ny dingana amin&39;ny fomba Hummers. Noho ny tsingerin&39;ny famokarana fohy ny fomba, ny tombony amin&39;ny famokarana synthétique avo dia misy fiantraikany sy fandalinana.

Nandritra ny fomba Hummers, ny graphite dia voaomana, anisan&39;izany ny mari-pana ambany (0 ° C), ny hafanana antonony (38 ° C) ary ny mari-pana ambony (98 ° C), ary ny oxidizing agent dia mifantoka H2SO4 sy KMNO4. Amin&39;ny alalan&39;ny fandalinana ny dingan&39;ny oxidation graphite, ny fomba Hummers dia ovaina, izany hoe, ny fe-potoana izay nitarina ny dingana fanehoan-kevitra amin&39;ny hafanana antonony, ary nofoanana ny dingana fanehoan-kevitra amin&39;ny hafanana. Ny fanafoanana ny fizotran&39;ny fanehoan-kevitra amin&39;ny dingana ambony amin&39;ny mari-pana, tsy vitan&39;ny hoe misoroka ny loza ateraky ny sulfuric asidra mandritra ny fanehoan-kevitra amin&39;ny hafanana avo, fa ny fisorohana ny fanehoan-kevitry ny hafanana amin&39;ny hafanana avo, ny fampihenana ny haavon&39;ny oxidation ny graphite.

Ao amin&39;ny teoria sy ny fanandramana, ny sosona oksizenina sosona azo omanina eo ambany mari-pana ambany sy azo antoka sy azo antoka. Ny graphite preparative dia nahena tamin&39;ny hydrate hydrate mba hanomanana ny nanomaterials graphene, ary novokarina ny graphite oxide sy ny graphene vita amin&39;ny taratasy manify. 1, fanandramana 1.

1, manta mizana grafit (granularity: 325 harato, voalohany manan-karena nanotechnology Co., Ltd.); asidra solifara (95% ~ 98%); potasioma permanganate, ny sodium nitrate, hydrogenated (30%), hydrochloric asidra, chlorination Barium, hydrate (80%), sns.

dia analyse. Ireo fanafody etsy ambony ireo dia tsy voalaza manokana, ary novidina avy amin&39;ny Shanghai Chemical Reagent Company of China Pharmaceutical Group. Ireo reagents rehetra voalaza etsy ambony ireo dia tsy voakarakara mivantana.

1.2, fanomanana santionany 1) Manify taratasy toy ny ranomainty oksizenina (GO) sosona fanomanana ny 230 ml (98%) sulfuric asidra ao amin`ny 1000 ml ny telo tavoara, eo ambany hafanana tsy tapaka hery andriamby sy ranomandry fandroana, 5.0 gnano3 sy 10.

0 g Fifangaroan&39;ny graphite, mamporisika ny antonony amin&39;ny hafainganam-pandeha antonony mandritra ny 30 minitra, mba hampifangaro azy. 30GKMNO4 tsikelikely nampidirina ao amin&39;ny fifangaroana, ary mamporisika amin&39;ny 0 ° C mandritra ny 2 ora. Ny tavoara telo dia nafindra tao amin&39;ny fandroana rano mafana izay efa namboarina tamin&39;ny hafanana manodidina ny 38 ° C, nitohy nandritra ny 30 ora, ary natao ny fanehoan-kevitra momba ny hafanana antonony.

Aorian&39;ny mari-pana amin&39;ny fihetsiketsehan&39;ny hafanana antonony, dia nafindra tao anaty vilia baolina 2000 ml ny fangaro, natsofoka tamin&39;ny rano deionized hatramin&39;ny 1000 mL, ary nampiana 200 mL (5%) H2O2, ary nivadika ho loko volamena ny ranon-javatra. Ny centrifugation dia natao tamin&39;ny centrifuge avo lenta, ary ny hafainganam-pandehan&39;ny fihodinana dia 4000 r / min, nosasana tamin&39;ny 5% HCl 5% HCl sy ny rano deionized alohan&39;ny hidirana mandra-pahitana ny asidra solifara solifara ao amin&39;ny filtrate, ary ny fampiatoana dia nafindra tao amin&39;ny lovia evaporating vacuum, vacuum vacuum, 60. 2) Ny fampihenana ny graphene dia niparitaka tao amin&39;ny 100 ml ny ranomainty graphite vokatra ao amin&39;ny 100 ml ny aqueous vahaolana mba hahazoana ny volontsôkôlà-mavo fampiatoana, ary ny fitarafana toe-javatra dia niparitaka teo ambanin&39;ny telo-vava flask, nafanaina ny 90 ° C, mitete 2 ml ny hydrated hydrated fepetra, eto Ny vokatra dia niparitaka nandritra ny fotoana maro ny 24 h voasivana. miaraka amin&39;ny methanol sy rano, ary ny graphene dia maina mihoatra ny 60 ° C.

1.3, fitsapana sy ny toetra XRD diffraction fanadihadiana mampiasa Japoney Rigaku D / MAX-RB diffractometer (Cu tanjona, Kα taratra, λ = 0.154056 nm), scanning isan-karazany 5 ° ~ 80 °; famakafakana spectroscopy infrarouge (FT-IR) ThermonicoLET&39;s NEXUS Fourier transform spectrum infrarouge, takelaka KBR, halavan&39;ny onjam 400 ~ 4000cm-1; Raman spectroscopy (Raman) mamakafaka ny INVIA-karazana microclassless tamin&39;ny laser Raman spectrometer ny British Renishaw, Ny firaketana an-tsoratra isan-karazany dia avy amin&39;ny 100 ny 3200 cm-1, ny tamin&39;ny laser halavan&39;ny onjam dia 785 nm, ny spatial fanapahan-kevitra dia 1 μm lateral tari-dalana, longitudinal ny 1 μm; scanning electron microscope (SEM) dia mampiasa S-4800 FESEM scanning electron microscope; transmissive electron microscope (TEM) adopts Japan JEO orinasa JEM-2100F-karazana saha mamindra avo lenta fifindran&39;ny microscope elektronika; Ny mikraoskaopy mikraoskaopy manadihady hery atomika (AFM) dia mampiasa ny mikraoskaopy hery atomika karazana an&39;ny Veeco an&39;ny US Veeco.

Fehiny a. Amin&39;ny famakafakana ny fizotran&39;ny oxidation amin&39;ny dingan&39;ny oxidation graphite, ny fomba Hummers novaina izay nanafoanana ny dingan&39;ny fanehoan-kevitry ny mari-pana ambony, ary ny graphene dia azo tamin&39;ny alàlan&39;ny ultrasound peeling sy ny fitsaboana hydrated hydrate. B.

Ny valin&39;ny fitsapana TEM sy AFM dia mampiseho fa ny hatevin&39;ny graphene dia 0.36 nm, ny isan&39;ny sosona dia 3. c.

Ny fomba dia azo antoka sy tsotra, ny vokatra dia lehibe, mora fehezina, manome haingana sy tsotra, lehibe fanomanana ny taratasy manify miendrika graphene, manome fototra ho an&39;ny fampiharana ara-barotra ny graphene. .