Muna amfani da kukis don inganta ƙwarewar ku. Ta hanyar ci gaba da bincika wannan rukunin yanar gizon, kun yarda da amfani da kukis ɗinmu. Ƙarin bayani.
Ci gaba da buƙatar man fetur mai yawan carbon ya haifar da ƙaruwar carbon dioxide (CO2) a cikin sararin samaniya. Ko da an yi ƙoƙari don rage fitar da hayakin carbon dioxide, ba su isa su magance illolin da iskar gas ɗin da ke cikin sararin samaniya ke haifarwa ba.
Don haka masana kimiyya sun ƙirƙiro hanyoyin ƙirƙira don amfani da carbon dioxide da ke cikin sararin samaniya ta hanyar canza shi zuwa ƙwayoyin halitta masu amfani kamar formic acid (HCOOH) da methanol. Rage hasken carbon dioxide ta hanyar amfani da hasken da ake iya gani hanya ce da aka saba amfani da ita don irin waɗannan canje-canje.
Wata ƙungiyar masana kimiyya daga Cibiyar Fasaha ta Tokyo, ƙarƙashin jagorancin Farfesa Kazuhiko Maeda, ta sami babban ci gaba kuma ta rubuta shi a cikin mujallar ƙasa da ƙasa mai suna "Angewandte Chemie" wacce aka buga a ranar 8 ga Mayu, 2023.
Sun ƙirƙiri wani tsari na ƙarfe-organic (MOF) wanda aka yi da tin wanda ke ba da damar rage yawan carbon dioxide. Masu binciken sun ƙirƙiri wani sabon MOF mai tushen tin (Sn) tare da dabarar sinadarai [SnII2(H3ttc)2.MeOH]n (H3ttc: trithiocanuric acid da MeOH: methanol).
Masu ɗaukar hoto masu amfani da hasken CO2 masu inganci sosai suna amfani da ƙarfe masu daraja marasa ƙima a matsayin manyan abubuwan da suka haɗa. Bugu da ƙari, haɗakar shan haske da ayyukan catalytic cikin naúrar ƙwayoyin halitta guda ɗaya da ta ƙunshi adadi mai yawa na ƙarfe ya kasance ƙalubale na dogon lokaci. Don haka, Sn shine ɗan takara mafi kyau saboda zai iya magance matsalolin biyu.
MOFs su ne mafi kyawun kayan ƙarfe da kayan halitta, kuma ana nazarin MOFs a matsayin madadin masu ɗaukar hoto na ƙasa na gargajiya.
Sn zaɓi ne mai yiwuwa ga masu ɗaukar hoto na MOF saboda yana iya aiki a matsayin mai ƙarfafawa da kuma mai tattarawa yayin aikin ɗaukar hoto. Duk da cewa an yi nazari sosai kan MOFs na gubar, ƙarfe, da zirconium, ba a san komai game da MOFs na tushen tin ba.
An yi amfani da H3ttc, MeOH da tin chloride a matsayin sinadaran farko don shirya MOF KGF-10 mai tushen tin, kuma masu binciken sun yanke shawarar amfani da 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole. Yana aiki a matsayin mai ba da wutar lantarki da kuma tushen hydrogen.
Daga nan sai aka yi amfani da KGF-10 da aka samu wajen gudanar da bincike daban-daban. Sun gano cewa kayan yana da tazara mai girman 2.5 eV, yana shan hasken da ake iya gani, kuma yana da matsakaicin karfin shakar carbon dioxide.
Da zarar masana kimiyya sun fahimci halayen zahiri da na sinadarai na wannan sabon abu, sun yi amfani da shi don haɓaka rage yawan carbon dioxide a gaban haske mai gani. Sun gano cewa KGF-10 zai iya canza CO2 yadda ya kamata da zaɓi zuwa tsari (HCOO–) tare da inganci har zuwa kashi 99% ba tare da buƙatar ƙarin masu ɗaukar hoto ko abubuwan ƙarfafawa ba.
Hakanan yana da yawan fitowar kwantum mai yawa (rabo na adadin electrons da ke cikin amsawar ga jimlar adadin photons da suka faru) na 9.8% a tsawon tsayin 400 nm. Bugu da ƙari, nazarin tsarin da aka gudanar a duk tsawon amsawar ya nuna cewa KGF-10 ya sami gyare-gyare na tsarin da ke haɓaka rage tasirin photocatalytic.
Wannan binciken ya gabatar da wani photocatalyst mai inganci, mai sassa ɗaya, mai daraja wanda ba shi da ƙarfe don hanzarta canza carbon dioxide zuwa tsari. Abubuwan ban mamaki na KGF-10 da ƙungiyar ta gano sun buɗe sabbin damammaki don amfani da shi azaman photocatalyst a cikin matakai kamar rage fitar da hayakin CO2 ta amfani da makamashin rana.
Farfesa Maeda ya kammala da cewa: "Sakamakonmu ya nuna cewa MOFs na iya zama dandamali don amfani da karafa marasa guba, masu rahusa, da kuma masu arzikin ƙasa don ƙirƙirar ingantattun ayyukan photocatalytic waɗanda yawanci ba za a iya cimma su ta amfani da hadaddun ƙarfe na ƙwayoyin halitta ba."
Kamakura Y da abokan aikinsa (2023) Tsarin ƙarfe-halittu na Tin(II) wanda aka yi da ƙarfe yana ba da damar rage yawan carbon dioxide zuwa ga samuwarsa cikin sauƙi da zaɓi a ƙarƙashin haske mai gani. Applied Chemistry, Buga na Duniya. doi:10.1002/ani.202305923
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