Kev ntsuas kub thiab qib nitrogen hauv av yog qhov tseem ceeb rau kev ua liaj ua teb.
Cov chiv uas muaj nitrogen yog siv los ua kom cov zaub mov ntau ntxiv, tab sis lawv cov emissions tuaj yeem ua paug rau ib puag ncig.Txhawm rau kom siv cov peev txheej loj tshaj plaws, nce cov qoob loo ua liaj ua teb, thiab txo qis ib puag ncig kev pheej hmoo, kev soj ntsuam tas li thiab lub sijhawm tiag tiag ntawm cov av, xws li av kub thiab chiv emission, yog qhov tseem ceeb.Ib qho kev ntsuas ntau qhov ntsuas yog qhov tsim nyog rau kev ua liaj ua teb ntse lossis precision txhawm rau taug qab NOX roj emissions thiab av kub rau qhov zoo tshaj plaws fertilization.
James L. Henderson, Jr. Memorial Associate Professor of Engineering Science thiab Mechanics ntawm Penn State Huanyu "Larry" Cheng tau coj kev txhim kho ntawm ntau qhov ntsuas ntsuas uas ua tiav qhov ntsuas kub thiab nitrogen kom tso cai ntsuas qhov tseeb ntawm txhua qhov.
Cheng hais tias,"Rau qhov ua kom muaj txiaj ntsig zoo, yuav tsum muaj kev saib xyuas tas li thiab lub sijhawm tiag tiag ntawm cov av, tshwj xeeb yog siv nitrogen thiab av kub.Qhov no yog qhov tseem ceeb rau kev ntsuas kev noj qab haus huv ntawm cov qoob loo, txo cov pa phem ib puag ncig, thiab txhawb kev ua liaj ua teb kom ruaj khov thiab raug. "
Txoj kev tshawb no tsom mus rau kev siv cov khoom tsim nyog rau cov qoob loo zoo tshaj plaws.Cov qoob loo ntau lawm yuav qis dua li nws yuav yog tias siv nitrogen ntau dua.Thaum cov chiv siv ntau dhau, nws raug nkim, cov nroj tsuag tuaj yeem hlawv, thiab cov pa phem nitrogen tso tawm rau hauv ib puag ncig.Cov neeg ua liaj ua teb tuaj yeem ncav cuag qhov zoo tshaj plaws ntawm cov chiv rau kev loj hlob ntawm cov nroj tsuag nrog kev pab los ntawm kev txheeb xyuas cov qib nitrogen kom raug.
Co-sau Li Yang, tus xibfwb hauv Tsev Kawm Ntawv ntawm Artificial Intelligence ntawm Tuam Tshoj Hebei University of Technology, tau hais tias,"Cov nroj tsuag loj hlob kuj cuam tshuam los ntawm qhov kub thiab txias, uas cuam tshuam rau lub cev, tshuaj, thiab microbiological txheej txheem hauv av.Kev saib xyuas tsis tu ncua ua rau cov neeg ua liaj ua teb tsim cov tswv yim thiab kev cuam tshuam thaum kub kub lossis txias dhau rau lawv cov qoob loo. "
Raws li Cheng, Sensing mechanisms uas tuaj yeem tau txais cov roj nitrogen thiab ntsuas kub ntawm ib leeg yog tsis tshua muaj qhia.Ob qhov roj thiab qhov kub thiab txias tuaj yeem ua rau muaj qhov sib txawv ntawm qhov ntsuas qhov kev nyeem ntawv, ua rau nws nyuaj rau qhov txawv ntawm lawv.
Cheng pab pawg tau tsim lub tshuab ua haujlwm siab uas tuaj yeem kuaj xyuas cov nitrogen poob ntawm nws tus kheej ntawm cov av kub.Lub sensor yog ua los ntawm vanadium oxide-doped, laser-induced graphene ua npuas ncauj, thiab nws tau pom tias doping hlau complexes nyob rau hauv graphene txhim kho gas adsorption thiab nrhiav kom tau rhiab heev.
Vim tias cov ntaub mos mos tiv thaiv lub sensor thiab tiv thaiv cov roj nitrogen permeation, lub sensor tsuas yog cuam tshuam rau qhov kub thiab txias.Lub sensor kuj tseem siv tau yam tsis muaj encapsulation thiab ntawm qhov kub siab dua.
Qhov no tso cai rau kev ntsuas qhov tseeb ntawm cov pa nitrogen los ntawm kev tsis suav nrog qhov cuam tshuam ntawm cov av noo thiab av kub.Kub thiab nitrogen roj tuaj yeem ua tiav tag nrho thiab tsis muaj kev cuam tshuam tsis muaj kev cuam tshuam los ntawm kev siv lub kaw lus kaw thiab tsis muaj qhov ntsuas.
Tus kws tshawb fawb tau hais tias decoupling qhov kub thiab txias emissions yuav siv tau los tsim thiab siv multimodal li nrog decoupled sensing mechanisms rau precision ua liaj ua teb nyob rau hauv tag nrho cov huab cua puag.
Cheng tau hais tias, "Lub peev xwm los soj ntsuam ib txhij pom qhov tsis tshua muaj nitrogen oxide concentrations thiab kev hloov pauv kub me me ua rau txoj hauv kev rau kev txhim kho cov khoom siv hluav taws xob ntau ntxiv rau yav tom ntej nrog rau kev txiav txim siab cov txheej txheem rau kev ua liaj ua teb, kev saib xyuas kev noj qab haus huv, thiab lwm yam kev siv. "
Cheng txoj kev tshawb fawb tau nyiaj los ntawm National Institutes of Health, National Science Foundation, Penn State, thiab Suav National Natural Science Foundation.
Phau ntawv Journal Reference:
Li Yang.Chuizhou Meng, et al.Vanadium Oxide-Doped Laser-Induced Graphene Multi-Parameter Sensor rau Decouple Av Nitrogen Poob thiab Temperature.Advance Khoom.DOI: 10.1002/adma.202210322
Lub sij hawm xa tuaj: Plaub Hlis-10-2023