GRAPHENE, A COV ZOV-PURPOSE COV KHOOM
Graphene yog ib qho khoom siv tshiab uas yuav hloov qhov peb hnav khaub ncaws.
Hais txog yav dhau los hauv peb tsab xov xwm ntawm cov ntaub tshiab, graphene tseem txuas ntxiv ua rau kev txhaws. Thiab rau cov laj thawj zoo. Tshawb nrhiav nyob rau xyoo 2004 los ntawm ob tug kws tshawb fawb los ntawm University of Manchester, André Geim thiab Konstantin Novoselov, thiab tau txais qhov khoom plig Nobel rau Physics hauv xyoo 2010, cov khoom siv tshiab tsis tau ua tiav no ua rau muaj ntau yam tshwj xeeb.
Noj cov duab ntawm ib txheej txheej ntawm cov pa roj carbon atoms txheej txheem ntawm hauv cov qauv ua ke ntawm honeycomb, graphene los hauv daim ntawv dawb huv, tsis muaj ib qho kev quav ntxiv lossis chemistry. Npaj nyob rau hauv accordion-daim ntawv txheeb, nws cov tiaj thiab nthuav dav thiab nws cov khoom siv thermal thiab hluav taws xob ua rau nws tus neeg sib tw zoo rau kev sib txuas ntawm textile, ntxiv rau nws cov txiaj ntsig ib puag ncig, raws li graphene nqus cov hydrocarbons thiab cov ntaub ntawv organic.
Graphene tuaj yeem piav qhia raws li ib qho-ib qho me me ib qho me me ntawm txheej graphite. Nws yog cov qauv txheej txheem yooj yim ntawm lwm cov allotropes, suav nrog graphite, hluav ncaig, carbon nanotubes thiab fullerenes. Nws tseem tuaj yeem raug suav tias yog kev txiav txim siab loj cov tshuaj tsw qab ua lub cev, qhov kev txwv ntawm tsev neeg ntawm tiaj polycyclic uas muaj ntxhiab hydrocarbons. Kev tshawb nrhiav Graphene tau nthuav dav sai vim qhov tshuaj tau pib ua ntej cais nyob rau xyoo 2004. Kev tshawb fawb tau paub los ntawm cov lus piav qhia txog graphene lub cev, cov qauv thiab cov khoom, uas txhua yam tau suav xyoo lawm ua ntej. Zoo-graphene kuj tau ua pov thawj kom yooj yim cais kom yooj yim, ua rau kev tshawb fawb ntau ntxiv. Andre Geim thiab Konstantin Novoselov ntawm University of Manchester yeej qhov khoom plig Nobel hauv Physics hauv xyoo 2010 "rau kev sim ua rau cov khoom siv ntawm cov khoom siv ob sab.
Graphene-coated npuag tau tau los ntawm kev txo tshuaj lom ntawm graphene oxide. Kev coj cov ntaub ua tiav tau tau thov ntau cov txheej txheem graphene. Electrochemical impedance spectroscopy qhia pom kev coj tus cwj pwm ntawm cov ntaub. Kev ntsuas tus lej ntsuas yog qhov ntsuas qhov tseem ceeb hauv lub cim los ntawm hluav taws xob voltammetry. Cov xaim hluav taws xob tsom tsom pom hluav taws xob tsom tau pom qhov nce ntawm electroactivity.