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Graphene pab tiv thaiv cov hlau ntawm Rusting

Ib tug neeg tshawb nrhiav Asmeskas thiab nws tus khub tau tsim ib lub tshuab tshiab uas siv graphene los tiv thaiv cov hlau ntawm xeb.

Steel rusting yog ib qho teeb meem loj hauv kev lag luam automotive. Txawm hais tias them cov xim, nws yooj yim rau kos thiab chrome yog siv rau lub nruas. Tus txheej txheem yuav ntxiv cov tshuaj lom neeg

Yuav kom daws tau qhov teeb meem no, SUNY Buffalo chemistry xib fwb Sarbajit Banerjee thiab tus tub kawm ntawv tus kws kho mob Robert Dennis tau tsim ib qho kev sib thooj ntawm polymer uas muaj graphene

Graphene yog ib txheej txheej carbon, nws muaj hydrophobic thiab muaj zog hluav taws xob. Cov khoom no cia hlau los txo cov tshuaj tua hluav taws xob ntawm rusting hlau thaum nws raug dej.

Ob tug neeg tshawb fawb ntxiv cov txheej txheem rau cov kua roj vanish, thov nws rau cov hlau, thiab tom qab ntawd muab tso rau hauv cov ntsev dej. Nyob rau lub caij ntuj no kev nyab xeeb, qhov sib xyaw ntawm dej ntsev thiab ntsev thiab daus yog sib txawv thiab lub tsheb ntsib ib lub tsheb, yog li nws zoo heev li yog ib thaj chaw zoo heev.

Pib, lub voj voos hlau tsuas yog ciaj sia nyob ob peb hnub nyob rau hauv brine. Txawm li cas los xij, thaum kho qhov concentration thiab dispersion ntawm graphene ntxiv, Banerjee thiab Dennis khaws tau cov kua roj vanish nyob hauv cheeb tsam no rau ib lub hlis.

Banerjee tau hais tias nws xav ntxiv ib yam dab tsi rau txheej uas pom cov kev hloov hauv pH ntawm cov dej ze ntawm khawb thiab reacts nrog dej nyob rau hauv ib txoj kev uas ntsaws cov kab nrib pleb.

Txawm hais tias cov cuab yeej no yog ib txoj hauv kev ntev los ntawm kev lag luam, qee cov tuam txhab lag luam loj hauv txoj kev lag luam steel kuj xav koom nrog txoj kev tshawb no, tshwj xeeb tshaj yog Tata Steel, uas twb tau txais nyiaj txiag Banerjee txoj kev sim. Ob tug kws tshawb fawb kuj tau txais $ 50,000 ntawm cov nyiaj pab los ntawm Lub Koom Haum New York State Pollution Prevention.

Nyob rau hauv xovxwm tso tawm, Banerjee hais tias cov xim muaj peev xwm yuav ua tau los ntawm kev siv cov cuab yeej siv tam sim no ntawm lub chaw cog hlau.

Tsis zoo li hexavalent chromium, uas yog siv rau lub tsho tiv no thiab qee cov xyaw, graphene tsis yog cov tshuaj lom neeg vim tias nws yog ib qho carbon atom thiab tsis yuav tsum siv cov acids uas muaj zog thiab muaj kev ruaj ntseg thoob plaws hauv txoj kev. Cov laj thawj no ua rau graphene khoom siv yees siv rau yav tom ntej hluav taws xob.


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