1, habka xarigga farsamada
Habka jeexjeexa makaanikada waa habka lagu helo walxaha lakabka khafiifka ah ee graphene iyadoo la adeegsanayo is jiid jiidka iyo dhaqdhaqaaqa u dhexeeya walxaha iyo graphene. Habka waa sahlan tahay in lagu shaqeeyo, iyo graphene la helay inta badan waxay haysaa qaab dhismeed dhamaystiran. Sannadkii 2004-tii, laba saynis yahan oo Ingiriis ah ayaa adeegsadey cajalad hufan si ay lakabka uga saaraan lakabka garaafiga dabiiciga ah si ay u helaan graphene, kaas oo sidoo kale loo kala saaray habka xariifinta farsamada. Habkan ayaa mar loo tixgeliyey inuu yahay mid aan waxtar lahayn oo aan awoodin in uu soo saaro tiro badan.
Sanadihii la soo dhaafay, warshaduhu waxay sameeyeen cilmi-baaris badan iyo horumarinta horumarinta hababka wax soo saarka ee graphene. Waqtigan xaadirka ah, shirkado dhowr ah oo ku yaal Xiamen, Guangdong iyo gobollada iyo magaalooyinka kale waxay ka adkaadeen dhalooyinka wax soo saarka ee diyaarinta qiimaha jaban ee qiimaha jaban ee graphene, iyadoo la adeegsanayo habka xarigga farsamada si ay u soo saaraan graphene qiimo jaban iyo tayo sare leh.
2. Habka Redox
Habka dhimista Oxidation-ka waa in la oxidize garaafyada dabiiciga ah iyadoo la isticmaalayo reagents kiimikaad ah sida sulfuric acid iyo nitric acid iyo oxidants sida potassium permanganate iyo hydrogen peroxide, kordhinta farqiga u dhexeeya lakabyada graphite, iyo galinta oxides inta u dhaxaysa lakabyada graphite si loo diyaariyo GraphiteOxide. Dabadeed, fal-celiyeyaasha waxaa lagu dhaqaa biyo, iyo adkaha la dhaqay waxaa lagu qallajin doonaa heerkul hooseeya si loo diyaariyo budada graphite oxide. Graphene oxide waxaa lagu diyaariyey diirinta budada oksaydhka garaafka iyada oo la diiray iyo balaadhinta heerkulka sare. Ugu dambeyntii, graphene oxide waxaa la dhimay habka kiimikaad si loo helo graphene (RGO). Habkani waa sahlan tahay in lagu shaqeeyo, oo leh wax-soo-saar sare, laakiin tayadiisu hooseyso [13]. Habka dhimista Oxidation-ka waxay isticmaashaa asiidh xooggan sida sulfuric acid iyo nitric acid, taas oo khatar ah oo u baahan biyo badan si loo nadiifiyo, taas oo keenta wasakhowga deegaanka ee weyn.
Graphene ee loo diyaariyey habka redox waxa ku jira kooxo hawleed hodan ah oo ka kooban ogsijiin waana ay fududahay in wax laga beddelo. Si kastaba ha ahaatee, marka la yareeyo graphene oxide, way adag tahay in la xakameeyo content oxygen ee graphene ka dib markii la dhimay, iyo graphene oxide si joogto ah hoos u dhigi doonaa hoos saamaynta qorraxda, heerkulka sare ee gaadiidka iyo arrimo kale oo dibadda ah, si tayada alaabta graphene. soo saaray habka redox inta badan waa mid aan waafaqsanayn dufcaddii ilaa dufcaddii, taas oo ka dhigaysa ay adag tahay in la xakameeyo tayada.
Waqtigan xaadirka ah, dad badan ayaa ku wareersan fikradaha graphite oxide, graphene oxide iyo graphene oxide oo la dhimay. Graphite oxide waa bunni waana polymer ka graphite iyo oxide. Graphene oxide waa badeeco lagu helo in la diiriyo graphite oxide hal lakab, lakab labajibbaaran ama lakab oligo ah, waxaana ku jira tiro badan oo ah kooxo oksijiin ku jira, markaa graphene oxide ma aha mid shaqaynaysa waxayna leedahay sifooyin firfircoon, taas oo si joogto ah u yareyn doonta oo sii daaya gaasaska sida sulfur dioxide inta lagu jiro isticmaalka, gaar ahaan inta lagu jiro habka heerkulku sarreeyo. Badeecada ka dib dhimista graphene oxide waxaa loogu yeeri karaa graphene (la dhimay graphene oxide).
3. (silikon carbide) Habka epitaxial SiC
Habka Epitaxial SiC waa in la hoos u dhigo atamka silikoon ka fog alaabta oo dib loo dhiso atamka C ee soo hadhay iyada oo la isku keenayo meel vacuum ah oo aad u sarreeya iyo jawi heerkul sare ah, sidaas darteed helitaanka graphene oo ku salaysan SiC substrate. Graphene tayo sare leh ayaa lagu heli karaa habkan, laakiin habkani wuxuu u baahan yahay qalab sare.
Waqtiga boostada: Jan-25-2021