Kawanishi, Nyiv Pooj, Kaum Ib Hlis 15, 2022 /PRNewswire/ — Cov teeb meem ib puag ncig xws li kev hloov pauv huab cua, kev puas tsuaj ntawm cov khoom siv ntuj tsim, kev ploj ntawm cov tsiaj txhu, kev ua qias tuaj ntawm cov yas thiab kev rhuav tshem hav zoov tab tom ua rau muaj kev kub ntxhov thoob ntiaj teb vim muaj neeg coob zuj zus.
Cov pa roj carbon dioxide (CO2) yog cov pa roj uas ua rau lub ntiaj teb sov thiab yog ib qho ua rau muaj kev hloov pauv huab cua tseem ceeb. Hauv qhov no, ib qho txheej txheem hu ua "kev tsim cov duab hluav taws xob cuav (CO2 photoreduction)" tuaj yeem tsim cov khoom siv organic rau roj thiab tshuaj los ntawm CO2, dej thiab lub zog hnub ci, ib yam li cov nroj tsuag ua. Tib lub sijhawm, lawv kuj txo cov pa roj CO2, vim CO2 siv ua cov khoom siv rau kev tsim cov zog thiab cov khoom siv tshuaj. Yog li ntawd, kev tsim cov duab hluav taws xob cuav yog suav tias yog ib qho ntawm cov thev naus laus zis ntsuab tshiab.
MOFs (Metal Organic Frameworks) yog cov khoom siv ultraporous uas muaj cov pawg ntawm cov hlau inorganic thiab cov organic linkers. Lawv tuaj yeem tswj tau ntawm qib molecular hauv nanometer ntau thiab muaj thaj chaw loj. Vim yog cov khoom no, MOFs tuaj yeem siv rau hauv kev khaws cia roj, kev sib cais, kev nqus hlau, catalysis, kev xa tshuaj, kev kho dej, sensors, electrodes, lim dej, thiab lwm yam. Tsis ntev los no, MOFs tau pom tias muaj peev xwm ntes CO2 uas tuaj yeem photoreduced CO2, uas yog, artificial photosynthesis.
Cov quantum dots, ntawm qhov tod tes, yog cov khoom siv ultrathin (0.5–9 nm) uas lawv cov khoom siv optical ua raws li cov cai ntawm quantum chemistry thiab quantum mechanics. Lawv hu ua "artificial atoms lossis artificial molecules" vim tias txhua lub quantum dot tsuas muaj ob peb lossis ob peb txhiab atoms lossis molecules. Hauv qhov loj me no, cov theem zog ntawm cov electrons tsis txuas ntxiv lawm thiab sib cais vim yog qhov xwm txheej lub cev hu ua quantum confinement effect. Hauv qhov no, qhov wavelength ntawm lub teeb emitted yuav nyob ntawm qhov loj ntawm cov quantum dots. Cov quantum dots no kuj tuaj yeem siv rau hauv kev tsim photosynthesis vim lawv lub peev xwm nqus lub teeb siab, muaj peev xwm tsim ntau exciton thiab thaj chaw loj.
Ob qho tib si MOFs thiab quantum dots tau raug tsim los ntawm Green Science Alliance. Yav dhau los, lawv tau siv cov khoom siv sib xyaw MOF quantum dot los tsim cov kua qaub formic ua cov tshuaj tshwj xeeb rau kev tsim photosynthesis. Txawm li cas los xij, cov tshuaj catalysts no yog cov hmoov thiab cov hmoov catalyst no yuav tsum tau sau los ntawm kev lim dej hauv txhua txoj kev. Yog li ntawd, vim tias cov txheej txheem no tsis txuas ntxiv mus, lawv nyuaj rau siv rau kev siv hauv kev lag luam.
Ua teb rau qhov no, Mr. Tetsuro Kajino, Mr. Hirohisa Iwabayashi, thiab Dr. Ryohei Mori ntawm Green Science Alliance Co., Ltd. tau siv lawv cov thev naus laus zis los ua kom cov tshuaj catalysts tshwj xeeb no tsis txav tau ntawm cov ntaub pheej yig thiab tsim cov txheej txheem tshiab rau kev tsim cov kua qaub formic. uas tuaj yeem ua haujlwm tas li hauv kev siv hauv kev lag luam. Tom qab ua tiav cov tshuaj tiv thaiv photosynthesis, cov dej uas muaj cov kua qaub formic tuaj yeem raug coj tawm mus rho tawm, thiab cov dej tshiab tuaj yeem ntxiv rov qab rau hauv lub thawv kom txuas ntxiv ua kom cov tshuaj photosynthesis tas li.
Cov kua qaub Formic tuaj yeem hloov cov roj hydrogen. Ib qho ntawm cov laj thawj tseem ceeb uas tiv thaiv kev nthuav dav ntawm lub zej zog hydrogen thoob plaws ntiaj teb yog tias hydrogen yog lub atom me tshaj plaws hauv lub ntiaj teb, yog li nws nyuaj rau khaws cia, thiab kev tsim cov tank hydrogen nrog cov nyhuv sealing siab yuav kim heev. Tsis tas li ntawd, cov roj hydrogen tuaj yeem tawg thiab ua rau muaj kev phom sij rau kev nyab xeeb. Vim tias cov kua qaub formic yog kua, nws yooj yim dua los khaws cia ua roj. Yog tias tsim nyog, cov kua qaub formic tuaj yeem siv los ua kom muaj kev tsim cov hydrogen hauv qhov chaw. Tsis tas li ntawd, cov kua qaub formic tuaj yeem siv ua cov khoom siv raw rau ntau yam tshuaj lom neeg.
Txawm hais tias qhov ua tau zoo ntawm kev tsim photosynthesis tseem qis, Green Science Alliance yuav txuas ntxiv tawm tsam rau kev txhim kho kev ua tau zoo los tsim kom muaj kev siv tau rau kev tsim photosynthesis.