Ukubuyisela Isiliva Kumfucuza we-PV ngeGreen Graphene

Abacwaningi baseJames Cook University benze inqubo yokwenza i-graphene kuwoyela we-tangerine peel, bese beyisebenzisa ukubuyisa isiliva kumfucumfucu we-PV. Ukukhombisa ikhwalithi yesiliva etholiwe kanye ne-graphene ehlanganisiwe, benze inzwa ye-dopamine okubikwa ukuthi isebenze kahle kakhulu kunamadivayisi ayisethenjwa.

Iqembu le-James Cook University yase-Australia lenze “i-freestanding” i-graphene usebenzisa amafutha e-tangerine peel angenabuthi futhi avuselelekayo okungabikwa ukuthi asetshenziselwe ukubuyisela isiliva kumadivayisi we-PV we-PV ophelile.

"Akugcinanga nje ngokuphumela ku-graphene yekhwalithi ephezulu, kodwa futhi kubonise ikhono elimangalisayo lokuthola ngokukhetha isiliva kudoti ye-photovoltaic. Okunye okutholwe okumangaza kakhulu ukuthi igraphene yayikhetheka kanjani ekubhekiseni isiliva, ”kusho umbhali ohambelana naye uMohan Jacob. pv umagazini.

Ikhwalithi yazo zombili izinto ezitholiwe nezihlanganisiwe yabe isikhonjiswa kudivayisi yenzwa ye-SPE dopamine ethuthukisiwe yesiliva, eye yasebenza kahle kakhulu kunezinzwa ezimbili eziyizethenjwa ze-dopamine ezenziwe ngaphandle kwenhlanganisela ye-graphene esiliva.

I-graphene synthesis

Ithimba liqale ucwaningo ngokuhlanganisa i-graphene “lisebenzisa i-plasma ye-microwave engezansi” ezimeni zasemkhathini. "Izingxenye eziyinhloko zohlelo zifaka ijeneretha ye-microwave engu-2.45 GHz, inethiwekhi efanayo, isistimu yokupholisa kanye negumbi lokusabela," kusho.

Ukuhlaziywa kwe-Raman spectrum ye-graphene kubonise “isici esiphezulu se-2D” emandleni e-microwave phakathi kuka-200 W no-1000 W. “Izithombe ze-electron microscopy yokudlulisela zembule ukuhlukaniswa kwe-interstitial kuka-0.34, okufana nenani le-X-ray diffraction ebalwe ngokomthetho ka-Bragg,” kusho iqembu.

Ukubuyiselwa kwesiliva kusuka ku-PV

Ithimba libe selithola isiliva kumadivayisi e-organic PV ngokusebenzisa i-leaching ngesisombululo se-nitric acid. Ukufakwa kwe-PV bekuqukethe i-indium tin oxide (ITO), i-zinc oxide (ZnO), i-molybdenum oxide (MoO3), nesiliva (Ag).

Ngemva kokuqedwa kokukhishwa kwe-leaching, isixazululo sapholiswa futhi sasetshenziswa njengesixazululo sesitoko sokwakha i-SPE ehlanganiswe ne-graphene. “Ngemuva kwemizuzu eyi-10 ye-electrodeposition, ukugxila kwe-Ag kwehle kancane kwaba ngu-1.69 ppm. Lokhu kuncipha kuphakamisa ukuthi amanye ama-Ag ion ayencishiswa futhi afakwa endaweni yama-electrode ngesikhathi senqubo ye-electrochemical. Ngemuva kwemizuzu engama-20 ye-electrodeposition, ukugxilwa kwe-Ag ions kuphinde kwehle kwafika ku-1.62 ppm, okubonisa ukwehla okuqhubekayo kokuhlushwa kwe-Ag ion,” kusho izifundiswa.

"Le miphumela iphakamisa ukuthi isikhathi eside se-electrodeposition singaholela ekwehleni okwengeziwe kokugxila kwesiliva." Ukufakwa kwe-Ag kuqinisekiswe ngokutholwa kwe-voltammetric ye-cyclic.

“Naphezu kokuba khona kwezinye izinhlanganisela ezihlukahlukene kwisixazululo semfucuza ye-PV, i-graphene ibonise ikhono elimangalisayo lokuhlukanisa nokubuyisela isiliva ngokunemba okuphezulu. Le nzuzo ekabili yokukhiqiza i-graphene ebalulekile kuyilapho ngokukhetha ukuthola isiliva engxubeni eyinkimbinkimbi kube umphumela ojabulisayo futhi obungalindelekile ngandlela-thile,” kusho uMohan.

Ithimba lathi lolu cwaningo "luqokomisa ukusebenza okumangalisayo" kwe-graphene ekubuyiseleni izinsimbi ezibalulekile njengesiliva ku-e-waste.

"Sikhethe ukukhombisa ngemfucuza ye-PV ngoba imfucuza ye-photovoltaic iyinkinga ekhula ngokushesha ngenxa yokwamukelwa okwandayo kwamandla elanga. Ukulahlwa kwamaphaneli e-PV, aqukethe izinsimbi ezibalulekile njengesiliva, kubangela kokubili izinselelo zemvelo nezomnotho. Ngokugxila kudoti ye-PV, sasihlose ukuthuthukisa isisombululo esimeme esibhekana nesidingo esiphuthumayo sezindlela zokuvuselela kabusha ngenkathi sithola izinsiza ezibalulekile, "kusho uJacob.

Ukuboniswa kwenzwa ye-Dopamine

Ukubonisa ikhwalithi yezinto ezihlanganisiwe kuhlelo lokusebenza lomhlaba wangempela, ithimba lenze umtshina we-graphene-silver electrode (SPE/graphene-Ag) lase liwuqhathanisa nomtshina we-SPE ongenalutho kanye nomtshina we-graphene/SPE. Imiphumela yokuhlolwa ibonise ukuthi i-electrode ye-SPE/graphene-Ag ibonise “ukuthuthukiswa okukhulu kwamandla aphezulu” uma kuqhathaniswa nezinye izifanekiso ezimbili.

Okunye ukusetshenziswa kwezinhlanganisela ze-graphene-silver kuphakanyiswe abacwaningi, njengezingubo ezimelana nokugqwala, oyinki abaqhubayo ukuze basebenzise amadivaysi aguquguqukayo embonini ye-elekthronikhi, ama-antimicrobial coatings ukuze asetshenziswe ezimbonini ze-biomedical, kanye nezinzwa zokubona amagesi, ama-biomolecules, nezinto ezingcolisayo.

Umsebenzi wabo uchazwe kabanzi ephepheni elithi “Green synthesis of graphene for targeted of silver from photovoltaic waste,” eshicilelwe ngo. I-Chemosphere.

Impendulo ocwaningweni kuze kube manje ibe yinhle. "Umsebenzi wethu usanda kufika ku-inthanethi, futhi sigajwe yimpendulo kontanga yethu kanye nentshisekelo yabo ocwaningweni lwethu," kusho uJacob, enezela ukuthi leli qembu lithole impendulo ekhuthazayo mayelana "nokusebenza okubanzi nomthelela ongaba khona" womsebenzi emkhakheni webhethri kanye nemfucuza ye-electronics.

Izinyathelo ezilandelayo zethimba ziwukuthuthukisa inqubo yokuhlanganisa eluhlaza ukuze kuthuthukiswe ukukhula kwayo kanye nokusebenza kwezomnotho, okuhloswe ngayo inqubo engahlanganiswa nengqalasizinda ekhona yokugaywa kabusha kwe-PV kanye ne-e-waste. “Sibheke kakhulu ukuhweba ukuze kulethe lezi ntuthuko emakethe futhi kube nomthelela omkhulu embonini,” kusho uJacob. "Siphinde sibheke ubudlelwano nababambiqhaza bemboni kanye nabatshalizimali ukuze sihlole ukusetshenziswa kwezinga elikhulu."

Lokhu okuqukethwe kuvikelwe yi-copyright futhi akumele kuphinde kusetshenziswe. Uma ufuna ukubambisana nathi futhi ungathanda ukuphinda usebenzise okunye okuqukethwe kwethu, sicela uthinte: editors@pv-magazine.com.

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