Izivamvo ezintsha zomhlaba zinokuphucula ukusebenza kakuhle kokuchumisa kwezityalo

Izichumisi ezinenitrogen zisetyenziselwa ukwandisa imveliso yokutya, kodwa ukukhutshwa kwazo kusenokungcolisa imekobume.Ukwandisa ukusetyenziswa kobutyebi, ukunyusa izivuno zezolimo, kunye nokunciphisa imingcipheko yokusingqongileyo, ukubekwa esweni okuqhubekayo kunye nexesha lokwenyani kwiipropati zomhlaba, ezifana nobushushu bomhlaba kunye nokukhutshwa kwesichumisi, kubalulekile.I-sensor ye-multi-parameter iyimfuneko kwizolimo ezihlakaniphile okanye ezichanekileyo ukulandelela ukukhutshwa kwegesi ye-NOX kunye nokushisa komhlaba ukwenzela ukuchumisa okulungileyo.

UJames L. Henderson, uNjingalwazi oNxibeleleyo weSikhumbuzo soBunjineli beNzululwazi kunye neeMechanics ePenn State u-Huanyu "Larry" Cheng wakhokelela ekuphuhliseni i-sensor ye-multi-parameter ekwahlula ngempumelelo izibonakaliso zeqondo lokushisa kunye ne-nitrogen ukuvumela ukulinganisa ngokuchanekileyo nganye.

Cheng wathi,“Ukuze kuchunyiswe isichumiso esisebenzayo, kukho imfuneko yokusoloko kujongwa iimeko zomhlaba ngexesha lokwenyani, ngokukodwa ukusetyenziswa kwenitrogen kunye nobushushu bomhlaba.Oku kubalulekile ekuhloleni impilo yezityalo, ukunciphisa ukungcoliseka kwendalo, nokukhuthaza ezolimo ezizinzileyo nezichanekileyo. ”

Uphononongo lujolise ekusebenziseni isixa esifanelekileyo sesona sivuno sihle sesityalo.Imveliso yesityalo ingaba ngaphantsi kunokuba inokuba njalo ukuba kusetyenziswe initrogen eninzi.Xa isichumiso sigalelwe ngokugqithisileyo, siyachithwa, izityalo zinokutsha, kwaye imisi enetyhefu yenitrogen ikhutshwa kwindawo engqongileyo.Abalimi banokufikelela kumanqanaba afanelekileyo esichumiso sokukhula kwezityalo ngoncedo lokubona inqanaba lenitrogen elichanekileyo.

Umbhali-mbhali uLi Yang, unjingalwazi kwiSikolo soBuchule boBuchule kwiYunivesithi yaseHebei yeTekhnoloji yaseTshayina, uthe,“Ukukhula kwezityalo kukwachatshazelwa liqondo lobushushu, eliphembelela inkqubo ebonakalayo, yemichiza kunye nenkqubo yebhayoloji emhlabeni.Ukubeka iliso okuqhubekayo kunceda amafama ukuba aphuhlise amacebo kunye nokungenelela xa amaqondo obushushu eshushu kakhulu okanye ebanda kakhulu kwizityalo zabo. "

Ngokutsho kukaCheng, iindlela zokubona ezinokuthi zifumane igesi yenitrogen kunye nemilinganiselo yobushushu ezimeleyo enye kwenye azifane zixelwe.Zombini iigesi kunye nobushushu bunokubangela ukuguquguquka kokufunda ukuxhathisa kwenzwa, okwenza kube nzima ukwahlula phakathi kwabo.

Iqela likaCheng lenze isivamvo esisebenza kakuhle esikwaziyo ukubona ilahleko yenitrogen ngaphandle kobushushu bomhlaba.I-sensor yenziwe nge-vanadium oxide-doped, i-laser-induced graphene foam, kwaye ifunyenwe ukuba i-doping metal complexes kwi-graphene iphucula i-gas adsorption kunye nokubona ubuntununtunu.

Ngenxa yokuba i-membrane ethambileyo ikhusela inzwa kwaye ikhusela igesi ye-nitrogen, inzwa isabela kuphela kwiinguqu kwiqondo lokushisa.Inzwa ingasetyenziselwa ngaphandle kwe-encapsulation kunye nokushisa okuphezulu.

Oku kuvumela umlinganiselo ochanekileyo wegesi yenitrogen ngokungaquki iziphumo zokufuma kunye nobushushu bomhlaba.Ubushushu kunye negesi ye-nitrogen inokudityaniswa ngokupheleleyo kunye nokuphazamiseka-free kusetyenziswa i-sensor evaliweyo kunye ne-uncapsulated.

Umphandi uthe ukutshintshwa kweqondo lokushisa kunye nokukhutshwa kwegesi ye-nitrogen kungasetyenziselwa ukudala nokuphumeza izixhobo ze-multimodal kunye neendlela zokuvalelwa kwe-decoupled zokulima ngokuchanekileyo kuzo zonke iimeko zemozulu.

UCheng uthe, "Amandla okubona ngaxeshanye ukugxininiswa kwenitrogen oxide ephantsi kakhulu kunye notshintsho oluncinci lobushushu luvula indlela yophuhliso lwezixhobo zombane ze-multimodal zexesha elizayo ezineendlela zokuvalelwa ngokuchanekileyo kwezolimo, ukujonga impilo, kunye nezinye izicelo."

Uphando lukaCheng lwaxhaswa ngemali yiNational Institutes of Health, National Science Foundation, Penn State, kunye neChina National Natural Science Foundation.