Ukufumana kwakhona iSilivere kwiNkunkuma yePV ngeGreen Graphene

Abaphandi kwiYunivesithi yaseJames Cook baphuhlise inkqubo yokwenza igraphene kwioyile ye-tangerine peel, abathi ke bayisebenzise ukubuyisa isilivere kwinkunkuma yePV. Ukubonisa umgangatho wesilivere efunyenweyo kunye negraphene eyenziweyo, benze i-dopamine sensor ekuxelwe ukuba isebenze ngokugqithisileyo kwizixhobo zereferensi.

Iqela elivela kwiYunivesithi yaseJames Cook yaseOstreliya lenze “inkululeko” igraphene usebenzisa non-ityhefu kunye neoli ehlaziyekayo tangerine peel enokuxelwa ukuba isetyenziselwa ukubuyiswa kwesilivere ukusuka ekupheleni-of-ubomi organic izixhobo PV.

“Ayiphelelanga nje ekubeni ne-graphene ekumgangatho ophezulu, kodwa ikwabonakalise isakhono esimangalisayo sokubuyisela isilivere kwinkunkuma ye-photovoltaic. Esinye seziphumo zothusayo yayikukuba igraphene yayikhetheke kangakanani ekujoliseni isilivere, ”utshilo umbhali ohambelanayo uMohan Jacob. pv imagazini.

Umgangatho wezinto zombini ezifunyenweyo kunye nezinto ezenziweyo zaye zaboniswa kwisixhobo senzwa yesilivere ephuculweyo ye-SPE dopamine, ethe yagqwesa iisensom ezimbini ze-dopamine zereferensi ezenziwe ngaphandle kokuhlanganiswa kwesilivere yegraphene.

I-graphene synthesis

Iqela liqale uphando ngokwenza igraphene “isebenzisa iplasma yemicrowave” kwiimeko zomoya. "Ezona zinto ziphambili zesistim zibandakanya i-2.45 GHz microwave generator, inethiwekhi ehambelanayo, inkqubo yokupholisa, kunye negumbi lokuphendula," yatsho.

Uhlalutyo lwe-Raman spectrum yegraphene lubonise "uphawu lwe-2D peak" kumandla e-microwave phakathi kwe-200 W kunye ne-1000 W. "Imifanekiso ye-electron microscopy yothumelo ibonise i-interstitial spacing ye-0.34, ehambelana nexabiso le-X-ray diffraction ebalwa ngokomthetho we-Bragg," latsho iqela.

Ukubuyiswa kwesilivere kwiPV

Iqela ke lafumana isilivere kwizixhobo ze-PV ze-organic ngokusebenzisa i-leaching kwisisombululo se-nitric acid. I-PV yokugqoka iqulethe i-indium tin oxide (ITO), i-zinc oxide (ZnO), i-molybdenum oxide (MoO3), kunye nesilivere (Ag).

Emva kokuba i-leaching igqityiwe, isisombululo sipholile kwaye sisetyenziswe njengesisombululo sesitokhwe sokwenza i-graphene-coated SPE. "Ukulandela i-10 min ye-electrodeposition, i-Ag concentration yehle kancinci ukuya kwi-1.69 ppm. Oku kuncipha kubonisa ukuba ezinye ii-Ag ion zancitshiswa kwaye zafakwa kumphezulu we-electrode ngexesha lenkqubo ye-electrochemical. Emva kwemizuzu engama-20 ye-electrodeposition, i-Ag ion concentration yehla ngakumbi ukuya kwi-1.62 ppm, ebonisa ukunciphisa okuqhubekayo kwi-Ag ion concentration, "batsho abafundisi.

"Ezi ziphumo zibonisa ukuba ixesha elide le-electrodeposition inokukhokelela ekunciphiseni ngakumbi kwi-concentration yesilivere." Ukubekwa kwe-Ag kwaqinisekiswa ngobhaqo lwe-voltammetric ye-cyclic.

"Ngaphandle kobukho bezinye iikhompawundi ezahlukeneyo kwisisombululo senkunkuma ye-PV, igraphene ibonise isakhono esingaqhelekanga sokwahlula kunye nokubuyisela isilivere ngokuchanekileyo okuphezulu. Olu ncedo lubini lokuvelisa igraphene exabisekileyo ngelixa ukukhetha isilivere kumxube ontsonkothileyo kwaba sisiphumo esimnandi nesingalindelekanga, utshilo uMohan.

Iqela lathi uphando "lubalaselisa ukusebenza okumangalisayo" kwegraphene ekubuyiseleni iintsimbi ezixabisekileyo njengesilivere kwi-e-waste.

"Sikhethe ukubonisa ngenkunkuma ye-PV impahla ngenxa yokuba inkunkuma ye-photovoltaic yinkxalabo ekhula ngokukhawuleza ngenxa yokwanda kokwamkelwa kwamandla elanga. Ukuchithwa kweepaneli ze-PV, eziqulethe isinyithi esixabisekileyo njengesilivere, kubangela imingeni yokusingqongileyo kunye nezoqoqosho. Ngokugxila kwinkunkuma ye-PV, sijolise ekuphuhliseni isisombululo esizinzileyo esijongene nesidingo esiphuthumayo seendlela ezisebenzayo zokubuyisela kwakhona ngelixa sifumana izixhobo ezixabisekileyo, "utshilo uJacob.

Umboniso woluvo lweDopamine

Ukubonisa umgangatho wezinto ezidibeneyo kwisicelo sehlabathi langempela, iqela lenze i-graphene-silver electrode (SPE / graphene-Ag) kwaye iqhathanise ne-SPE engenanto kunye ne-graphene / SPE detector. Iziphumo zovavanyo zibonise ukuba i-electrode ye-SPE/graphene-Ag ibonise “uphuculo olubonakalayo kwincopho yangoku” xa kuthelekiswa neminye imizekelo emibini.

Ezinye izicelo ze-graphene-silver composites zacetyiswa ngabaphandi, njengeengubo ezixhathisayo kwi-corrosion, ii-inki eziqhubayo zokusebenzisa izixhobo eziguquguqukayo kwi-electronics industry, i-antimicrobial coatings ukuze isetyenziswe kumashishini e-biomedical, kunye neenzwa zokubona iigesi, i-biomolecules, kunye nezinto ezingcolisayo.

Umsebenzi wabo uchazwe kwiphepha elithi "I-Green synthesis yegraphene yokufumana isilivere ekujoliswe kuyo kwinkunkuma ye-photovoltaic," epapashwe I-Chemosphere.

Impendulo kuphando ukuza kuthi ga ngoku ibe ntle. "Umsebenzi wethu usandul 'ukungena kwi-intanethi, kwaye songanyelwe yimpendulo yoontanga kunye nomdla wabo kuphando lwethu," watsho uJacob, wongeza ukuba iqela lifumene impendulo ekhuthazayo malunga "nokusebenza ngokubanzi kunye nefuthe elinokubakho" lomsebenzi kwiinkalo zebhetri kunye nenkunkuma yombane.

Amanyathelo alandelayo eqela kukwandisa inkqubo ye-green synthesis ukuze kuphuculwe i-scalability kunye nokusebenza kwezoqoqosho, kujoliswe kwinkqubo enokuhlanganiswa kwi-PV ekhoyo yokuphinda isetyenziswe kunye ne-e-waste infrastructure. “Sijonge urhwebo ukuzisa ezi nkqubela phambili kwintengiso kwaye senze impembelelo enkulu kwishishini,” utshilo uJacob. "Sikwaphonononga intsebenziswano kunye nabachaphazelekayo kwishishini kunye nabatyali-mali ukuze silinge ukuphunyezwa komgangatho omkhulu."

Lo mxholo ukhuselwe yi-copyright kwaye awunakuphinda usetyenziswe. Ukuba ufuna ukusebenzisana nathi kwaye ungathanda ukuphinda usebenzise omnye umxholo wethu, nceda uqhagamshelane: editors@pv-magazine.com.

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