Umehluko phakathi kwegraphite Enwebekayo neGraphene?

1) Ukwethulwa kwegraphite enwebekayo

I-graphite enwebekayo, eyaziwa nangokuthi i-flexible graphite noma i-worm graphite, iwuhlobo olusha lwe-carbon material. I-graphite eyandisiwe inezinzuzo eziningi, njengendawo enkulu ye-surce ethile, umsebenzi ophezulu ongaphezulu, ukuzinza okuhle kwamakhemikhali kanye nokumelana nokushisa okuphezulu. Inqubo evamile yokulungiselela i-graphite eyandisiwe iwukuthatha i-graphite ye-flake yemvelo njengento, kuqala ukukhiqiza i-graphite enwebekayo ngenqubo ye-oxidation, bese iyandisa ibe yi-graphite enwetshiwe. Endabeni yokushisa okuphezulu, impahla ye-graphite eyandisiwe ingakhula ngokushesha izikhathi ezingu-150 ~ 300 ngevolumu, futhi ishintshe isuka ku-flake iye njenge-worm, ukuze isakhiwo sikhululeke, sibe ne-porous futhi sigobile, indawo engaphezulu iyanwetshwa, amandla angaphezulu ayathuthukiswa. , amandla okukhangisa e-flake graphite athuthukisiwe, futhi isibungu esifana ne-graphite singashumeka ngokwaso, ukuze impahla ibe nemisebenzi ye-flame retardant, ukuvala uphawu kanye ne-adsorption, futhi isetshenziswa kabanzi emkhakheni wezempilo, ezempi, ukuvikelwa kwemvelo. , imboni yamakhemikhali nokunye.

I-2)Indlela yokulungiselela i-graphite eyandisiwe

I-Chemical oxidation kanye ne-electrochemical oxidation isetshenziswa kakhulu ekunwetshweni kwegraphite. Indlela yendabuko ye-chemical oxidation inenqubo elula nekhwalithi ezinzile, kodwa kunezinkinga ezithile ezifana nokumosha kwe-asidi kanye nokuqukethwe okuphezulu kwesibabule kwemikhiqizo. Indlela ye-electrochemical ayisebenzisi ama-oxidants, isisombululo se-asidi singaphinda sisetshenziswe izikhathi eziningi, ngokungcoliswa kwemvelo okuphansi kanye nezindleko eziphansi, kodwa isivuno siphansi futhi izidingo zezinto ze-electrode ziphezulu. Njengamanje, ikhawulelwe ocwaningweni lwaselabhorethri kuphela. Ukwengeza ezindleleni ezihlukene ze-oxidation, lezi zindlela ezimbili zinokwelashwa okufanayo kwangemva kokukhipha i-asidi, ukugeza amanzi kanye nokomisa. Indlela ye-Chemical oxidation iyindlela esetshenziswa kakhulu kuze kube manje. Inqubo ivuthiwe futhi iye yathandwa kakhulu futhi yasetshenziswa embonini.

3)Umehluko phakathi kwegraphite enwetshiwe negraphene

I-graphene kanye ne-graphite enwetshiwe inokusebenza okuhlukile kukho kokubili ukwakheka kwezinto ezibonakalayo kanye nensimu yesicelo. I-graphite enwetshiwe ingasetshenziswa njengezinto ezingavuthiwe zokukhiqiza i-graphene. Isibonelo, indlela ye-Hummers ingasetshenziselwa ukuthola i-graphene oxide ngokunwetshwa kwe-ultrasonic ye-graphite oxide. Lapho i-graphite enwetshiwe ikhunyulwa ibe ucezu olulodwa, iba yi-graphene. Uma ikhunyulwa ibe yizingqimba eziningana, iyizendlalelo ezimbalwa ze-graphene. Ama-graphene nanosheets angalungiswa kusuka ezingxenyeni ezingaphezu kweziyishumi kuya kwezingu-30.

4) Izinkambu ezisebenzayo zegraphite enwetshiwe

1. Ukusetshenziswa kwezinto zokwelapha

Izingubo zezokwelapha ezenziwe nge-graphite enwetshiwe zingangena esikhundleni se-gauze yendabuko ngenxa yezindawo zayo ezinhle kakhulu.

2. Ukusetshenziswa kwezinto zempi

I-graphite enwetshiwe igaywa ibe yimpushana ecolekile, enezici eziqinile zokuhlakazeka nokumunca kumagagasi we-infrared. Ukwenza impushana yayo enhle ibe yinto enhle kakhulu yokuvikela i-infrared kudlala indima ebalulekile ekulinganiseni ugesi wesithombe empini yesimanje.

3. Ukusetshenziswa kwezinto zokuvikela imvelo

I-graphite enwetshiwe isetshenziswa kakhulu emkhakheni wokuvikelwa kwemvelo ngenxa yokuminyana kwayo okuphansi, ayinabuthi, ayinakungcola, ukwelashwa okulula kanye nokukhangiswa okuhle kakhulu.

4. Izinto ze-Biomedical

I-carbon material inokuhambisana okuhle kakhulu nomzimba womuntu futhi iyimpahla enhle ye-biomedical. Njengohlobo olusha lwe-carbon material, impahla ye-graphite eyandisiwe inezici ezinhle kakhulu zokukhangiswa kwama-macromolecules ephilayo nawe-biological. Ine-biocompatibility enhle, engenabuthi, ayinambitheki futhi ayinayo imiphumela emibi. Inethuba elibanzi lesicelo ezintweni ezisetshenziswayo ze-biomedical.