Asayansi apanga ukadaulo wa laser womwe ungatsegule njira zopangira mafuta abwino komanso matekinoloje amagetsi mtsogolomo.
Tikufuna mwachangu njira zodalirika komanso zokhazikika zosinthira mafuta oyaka, mafuta ndi gasi. Mpweya woipa wa carbon dioxide (CO2) ndi zinthu zinyalala zambiri zomwe zimapangidwa ndi zochitika zonse ndi magwero omwe amadalira mafuta oyaka. Pafupifupi matani 35 biliyoni a Carbon dioxide amatulutsidwa m'thupi lathu mapulaneti mpweya chaka chilichonse ngati chinyalala chochokera kumagetsi opangira magetsi, magalimoto ndi makina opanga mafakitale padziko lonse lapansi. Kuchepetsa zovuta za CO2 panyengo yapadziko lonse lapansi, CO2 yotayidwayi itha kusinthidwa kukhala yogwiritsidwa ntchito mphamvu monga carbon monoxide ndi zina zowonjezera mphamvu. Mwachitsanzo, kuchitapo kanthu ndi madzi CO2 kumatulutsa mpweya wochuluka wa haidrojeni, pamene hydrogen imapanga mankhwala othandiza monga ma hydrocarbon kapena mowa. Zogulitsa zoterezi zitha kugwiritsidwa ntchito pazinthu zosiyanasiyana komanso pamakampani apadziko lonse lapansi.
Electrocatalysts ndi zida zomwe zimagwira nawo gawo la electrochemical reaction - pamene mankhwala akuchitika koma mphamvu yamagetsi imakhudzidwanso. Mwachitsanzo, chothandizira choyenera chingathandize kuchitapo kanthu kwa haidrojeni ndi okosijeni kuti apange madzi mwadongosolo, apo ayi kudzakhala kusakaniza kwachisawawa kwa mipweya iwiri. Kapenanso kupanga magetsi powotcha hydrogen ndi oxygen. Ma Electrocatalysts amasintha kapena kukulitsa kuchuluka kwa machitidwe amankhwala popanda kudyedwa ndi zomwe zikuchitika. Pankhani ya CO2, ma electrocatalysts amawonedwa kuti ndi ofunikira komanso odalirika pokwaniritsa 'kusintha kwapang'onopang'ono' pakuchepetsa CO2 momwe amafunira.
Tsoka ilo, njira yeniyeni ya momwe ma electrocatalysts amagwirira ntchito sikumveka bwino ndipo zimakhala zovuta kwambiri kusiyanitsa pakati pa zigawo za mamolekyu apakati apakati ndi "phokoso" la mamolekyu osagwira ntchito mu yankho. Kumvetsetsa kochepa kwa makinawa kumabweretsa zovuta pakusintha kulikonse komwe kungatheke pakupanga ma electrocatalysts.
Asayansi ku Liverpool University UK awonetsa a laser-Kutengera njira yowonera ma electrochemical kuchepetsa carbon dioxide in-situ mu kafukufuku wawo wofalitsidwa mu Nature Catalysis. Anagwiritsa ntchito Vibrational Sum-Frequency Generation kapena VSFG spectroscopy kwa nthawi yoyamba pamodzi ndi kuyesa kwa electrochemical kufufuza chothandizira (Mn (bpy) (CO) 3Br) chomwe chikuwoneka ngati chothandizira kuchepetsa CO2 electrocatalyst. Khalidwe la oyimira pakati ofunikira omwe amapezeka pakuchitapo kanthu kwa kanthawi kochepa adawonedwa koyamba. Ukadaulo wa VSFG umapangitsa kuti zitheke kutsatira machitidwe ndikuyenda kwa mitundu yanthawi yayitali kwambiri pamayendedwe othandizira motero imatithandiza kumvetsetsa momwe ma electrocatalyst amagwirira ntchito. Chifukwa chake, machitidwe enieni a momwe ma electrocatalyst amagwirira ntchito pamachitidwe amankhwala amamveka.
Phunziroli limapereka zidziwitso za njira zina zamakina zovuta ndipo zingatilole kupanga mapangidwe atsopano a electrocatalysts. Ochita kafukufuku akufufuza kale momwe angasinthire chidwi cha njirayi ndipo akupanga njira yatsopano yodziwira kuti ikhale yodziwika bwino ndi chiŵerengero cha phokoso. Njira imeneyi ingathandize kutsegula njira zogwirira ntchito mafuta oyera ndikupeza mwayi wochulukirapo mphamvu zoyera. Njira yotereyi pamapeto pake iyenera kukulitsidwa m'mafakitale kuti ikwaniritse bwino kwambiri pazamalonda. Kugwira ma voliyumu ambiri a CO2 opangidwa kuchokera kumafuta oyaka mafuta kudzafunika kupita patsogolo kwa mafakitale.
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Kasupe (s)
Neri G et al. 2018. Kuzindikira kwa ma catalytic intermediates pamtunda wa electrode panthawi yochepetsera mpweya woipa wa carbon dioxide ndi chothandizira chambiri padziko lapansi. Nature Catalysis. https://doi.org/10.17638/datacat.liverpool.ac.uk/533
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