Cov txheej txheem tshuaj ua ntej oxidizes graphite rau hauv graphite oxide los ntawm cov tshuaj tiv thaiv oxidation, thiab ua rau cov txheej txheem sib txawv los ntawm kev qhia cov pa oxygen uas muaj cov pab pawg ua haujlwm ntawm cov pa roj carbon atoms ntawm cov graphite txheej, yog li ua rau tsis muaj kev cuam tshuam ntawm cov txheej txheem.

Feem ntau oxidation

Cov txheej txheem suav nrog Brodie method, Staudenmaier method thiab Hummers method [40].Lub hauv paus ntsiab lus yog kho cov graphite nrog muaj zog acid ua ntej,

Tom qab ntawd ntxiv muaj zog oxidant rau oxidation.

Lub oxidized graphite yog stripped los ntawm ultrasonic los tsim graphene oxide, thiab tom qab ntawd txo los ntawm kev ntxiv txo tus neeg sawv cev kom tau txais graphene.

Cov tshuaj txo qis xws li hydrazine hydrate, NaBH4 thiab muaj zog alkali ultrasonic txo.NaBH4 yog kim thiab yooj yim khaws cov khoom B,

Txawm hais tias muaj zog alkali ultrasonic txo yog yooj yim thiab ib puag ncig tus phooj ywg, nws yog ib qho nyuaj rau txo *, thiab ib tug loj tus naj npawb ntawm oxygenated functional pawg yuav nyob twj ywm tom qab txo,

Yog li ntawd, pheej yig dua hydrazine hydrate feem ntau yog siv los txo cov graphite oxide.Qhov zoo ntawm hydrazine hydrate txo qis yog tias hydrazine hydrate muaj peev xwm txo qis thiab yooj yim rau volatilize, yog li yuav tsis muaj impurities tshuav hauv cov khoom.Hauv cov txheej txheem txo qis, qhov tsim nyog ntawm cov dej ammonia feem ntau yog ntxiv los txhim kho qhov txo qis ntawm hydrazine hydrate,

Ntawm qhov tod tes, nws tuaj yeem ua rau qhov chaw ntawm graphene tiv thaiv ib leeg vim yog cov nqi tsis zoo, yog li txo cov agglomeration ntawm graphene.

Kev npaj loj ntawm graphene tuaj yeem pom tau los ntawm cov tshuaj oxidation thiab txo txoj kev, thiab cov khoom nruab nrab ntawm graphene oxide muaj qhov zoo dispersion hauv dej,

Nws yog ib qho yooj yim los hloov kho thiab ua haujlwm ntawm graphene, yog li txoj kev no feem ntau siv hauv kev tshawb fawb ntawm cov ntaub ntawv sib xyaw thiab lub zog cia.Tab sis vim oxidation

Qhov tsis muaj qee cov pa roj carbon atoms hauv cov txheej txheem ultrasonic thiab cov seem ntawm cov pa oxygen-muaj cov haujlwm ua haujlwm hauv cov txheej txheem txo feem ntau ua rau cov graphene tsim muaj ntau yam tsis xws luag, uas txo nws cov conductivity, yog li txwv nws daim ntawv thov nyob rau hauv lub tshav pob ntawm graphene nrog cov kev xav tau zoo. .