Izinzwa ezintsha zomhlabathi zingathuthukisa ukusebenza kahle kokuvundisa izitshalo

Umanyolo oqukethe i-nitrogen usetshenziselwa ukwandisa ukukhiqizwa kokudla, kodwa ukukhishwa kwawo kungase kungcolise imvelo.Ukuze kwandiswe ukusetshenziswa kwezinsiza, ukukhulisa isivuno sezolimo, kanye nokwehlisa izingozi zemvelo, ukuqapha okuqhubekayo nesikhathi sangempela kwezakhiwo zomhlabathi, njengezinga lokushisa lomhlabathi nokuphuma kukamanyolo, kubalulekile.Inzwa enamapharamitha amaningi iyadingeka ezolimo ezihlakaniphile noma ezinembayo ukulandelela ukukhishwa kwegesi ye-NOX kanye nezinga lokushisa lomhlabathi ukuze kufakwe umanyolo ongcono kakhulu.

UJames L. Henderson, Jr. Memorial Associate Professor of Engineering Science and Mechanics at Penn State Huanyu "Larry" Cheng uhole ukuthuthukiswa kwenzwa yepharamitha ehlukahlukene ehlukanisa ngempumelelo amasignali okushisa ne-nitrogen ukuze kuvunyelwe ukulinganisa okunembile ngakunye.

Cheng wathi,“Ukuze kufakwe isivundiso ngokuphumelelayo, kunesidingo sokuqapha izimo zenhlabathi ngokuqhubekayo nangesikhathi sangempela, ikakhulukazi ukusetshenziswa kwe-nitrogen nezinga lokushisa lomhlabathi.Lokhu kubalulekile ekuhloleni impilo yezitshalo, ukunciphisa ukungcoliswa kwemvelo, kanye nokukhuthaza ezolimo ezisimeme nezinembayo.”

Ucwaningo luhlose ukusebenzisa inani elifanele ukuze uthole isivuno esihle kakhulu.Ukukhiqizwa kwesitshalo kungase kube ngaphansi kunalokho okungaba khona uma kusetshenziswa i-nitrogen eningi.Uma umanyolo usetshenziswa kakhulu, uyamoshakala, izitshalo zingasha, bese kukhishelwa intuthu yenitrogen enobuthi endaweni ezungezile.Abalimi bangafinyelela emazingeni afanele kamanyolo wokukhula kwezitshalo ngosizo lokuthola izinga lenitrogen elinembile.

U-Co-author uLi Yang, uprofesa eSikoleni Sezobunhloli Bokwenziwa e-Hebei University of Technology yaseChina, uthe,“Ukukhula kwezitshalo kuphinde kuthonywe izinga lokushisa, elithonya izinqubo ezingokomzimba, zamakhemikhali nezamagciwane enhlabathini.Ukuqapha okuqhubekayo kwenza abalimi bakwazi ukuthuthukisa amasu kanye nokungenelela lapho amazinga okushisa eshisa kakhulu noma ebanda kakhulu ezitshalweni zabo.”

Ngokuka-Cheng, izindlela zokuzwa ezingathola igesi ye-nitrogen nezinga lokushisa ngaphandle kokunye azivamile ukubikwa.Kokubili amagesi nezinga lokushisa kungabangela ukuhlukahluka ekufundeni ukumelana kwenzwa, okwenza kube nzima ukuhlukanisa phakathi kwakho.

Ithimba lika-Cheng lakha inzwa esebenza kahle kakhulu ekwazi ukubona ukulahleka kwe-nitrogen ngaphandle kwezinga lokushisa lomhlabathi.Inzwa yenziwe nge-vanadium oxide-doped, i-laser-induced graphene foam, futhi kutholwe ukuthi izakhiwo ze-doping metal ku-graphene zithuthukisa ukukhangiswa kwegesi nokuzwela kokutholwa.

Ngenxa yokuthi ulwelwesi oluthambile luvikela inzwa futhi luvimbele ukungena kwegesi ye-nitrogen, inzwa isabela kuphela ekushintsheni kwezinga lokushisa.Inzwa ingasetshenziswa ngaphandle kwe-encapsulation kanye nezinga lokushisa eliphakeme.

Lokhu kuvumela ukulinganiswa okunembile kwegesi ye-nitrogen ngokungafaki imiphumela yomswakama olinganiselwe kanye nezinga lokushisa lomhlabathi.Izinga lokushisa negesi ye-nitrogen kungahlukaniswa ngokuphelele futhi kungabi neziphazamiso kusetshenziswa izinzwa ezivalekile nezingavaliwe.

Umcwaningi uthe ukushintshashintsha kwezinga lokushisa kanye nokukhishwa kwegesi ye-nitrogen kungasetshenziswa ukudala nokusebenzisa amadivaysi e-multimodal anezindlela zokuzwa ezihlukene zokulima ngokunemba kuzo zonke izimo zezulu.

UCheng uthe, "Ikhono lokubona ngasikhathi sinye ukugxila kwe-nitrogen oxide ephansi kakhulu kanye noshintsho oluncane lokushisa kuvula indlela yokwakhiwa kwemishini kagesi ye-multimodal yesikhathi esizayo enezindlela zokuzwa ezihlukene zokulima ngokunemba, ukuqapha impilo, nezinye izinhlelo zokusebenza."

Ucwaningo lukaCheng luxhaswe yiNational Institutes of Health, National Science Foundation, Penn State, kanye neChinese National Natural Science Foundation.