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Sɔrɔko ka fɛnɲɛnamafagalanw ɲinini min bɛ senna, o kɛra sababu ye ka dɔ fara gazi ɲuman (CO2) kan fiɲɛ kɔnɔ. Hali ni cɛsiriw kɛra walasa ka gazi ɲuman bɔli dɔgɔya, o tɛ se ka gazi min bɛ fiɲɛ na kaban, o nɔ juguw kɔsegin.
O la, dɔnnikɛlaw ye fɛɛrɛ dafalenw labɛn walasa ka baara kɛ ni gazi ɲuman ye min bɛ fiɲɛ kɔnɔ kaban, u kɛtɔ k’a sɛmɛntiya ka kɛ fɛn nafamaw ye i n’a fɔ asidi foromiki (HCOOH) ani mɛtanɔli. Gazi ɲuman fototali ni yeelen yelen ye, o ye fɛɛrɛ ye min bɛ kɛ tuma caman na o fɛn caman tigɛli suguw la.
Dɔnniyakɛlaw ka kulu dɔ min bɛ Tokiyɔ Teknoloji kalanso la, n’o ɲɛmɔgɔya bɛ Karamɔgɔ Kazuhiko Maeda bolo, o ye ɲɛtaa caman sɔrɔ, k’o sɛbɛn diɲɛ gafe dɔ kɔnɔ min tɔgɔ ye ko “Angewandte Chemie” min bɔra san 2023 mɛkalo tile 8.
U ye nɛgɛ-organique framework (MOF) dɔ da min sinsinnen bɛ tintin kan, min bɛ se ka kɛ sababu ye ka gazi ɲuman fototacogo sugandilen kɛ. Ɲininikalaw bɛ MOF kura dɔ da min sinsinnen bɛ tintin (Sn) kan ni kemikaliya formula ye [SnII2(H3ttc)2.MeOH]n (H3ttc: asidi tritiyosiyanuriki ani MeOH: mɛtanɔli).
CO2 fototalan minnu bɛ yeelen yelenw ye, olu fanba bɛ baara kɛ ni nɛgɛ nafamaw ye minnu man ca, k’u kɛ u yɔrɔ kolomaw ye. Ka fara o kan, yeelen minɛni ni fɛnɲɛnɛma-baaraw farali ɲɔgɔn kan ka kɛ molekiyɔmu kelen ye min dilannen don ni nɛgɛ caman ye, o tora gɛlɛya ye min bɛ sen na kabini tuma jan. O la, Sn ye kandida ɲuman ye bawo a bɛ se ka gɛlɛya fila bɛɛ ɲɛnabɔ.
MOFw ye fɛn ɲumanw ye nɛgɛw ni fɛnɲɛnamaw kama, wa MOFw bɛ ka kalan kɛ i n’a fɔ fɛn min bɛ kɛ ni jiri ye ka tɛmɛn laadala dugukolo nafama fototalanw kan.
Sn ye sugandili ye min bɛ se ka kɛ MOF-based fototalisiw fɛ bawo a bɛ se ka kɛ katalisita ni scavenger ye fotokatalizi kɛcogo la. Hali ni MOF minnu bɛ bɔ plɔmu, nɛgɛ ani zirkoniyɔmu na, olu sɛgɛsɛgɛra kosɛbɛ, fɛn caman tɛ dɔn MOF minnu bɛ bɔ tintin na.
H3ttc, MeOH ani tintin kuloridi kɛra daminɛfɛnw ye walasa ka MOF KGF-10 labɛn min sinsinnen bɛ tintin kan, wa ɲininikɛlaw y’a latigɛ ka 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole kɛ. bɛ kɛ ɛlektrɔniki dilanbaga ye ani idɔrɔzi sɔrɔyɔrɔ ye.
O kɔfɛ, KGF-10 min bɛ sɔrɔ, o bɛ kɛ ni sɛgɛsɛgɛli kɛcogo suguya caman ye. U y’a Sɔrɔ o fɛn in ka bandgap ye 2,5 eV ye, a bɛ yeelen janya yelenw Minɛ, wa a bɛ gazi ɲuman minɛcogo hakɛ danmadɔ.
Dɔnniyakɛlaw ye o fɛn kura in farikolo-ɲɛnajɛ ni a farikolo-ɲɛnajɛ-cogo Faamu tuma min na, u ye baara Kɛ n’a ye walasa ka gazi ɲuman dɔgɔyali Kɛ ni yeelen yelen bɛ yen. U y’a ye ko KGF-10 bɛ se ka CO2 sɛmɛntiya ka ɲɛ ani k’a sugandi ka kɛ foromati (HCOO–) ye ni baarakɛcogo ɲuman ye fo ka se 99% ma, k’a sɔrɔ a ma kɛ ni yeelenbɔlan walima fɛn wɛrɛw ye minnu bɛ se ka kɛ sababu ye ka yeelenbɔlan wɛrɛw kɛ.
A fana bɛ ni 'kɔnɔnafili ye min ka bon kosɛbɛ (ɛlektrɔniki hakɛ min bɛ o wale in na ni foton minnu bɛ Kɛ olu bɛɛ lajɛlen hakɛ) ye 9,8% ye ni 400 nm ye. Ka fara o kan, sigicogo sɛgɛsɛgɛli min kɛra o wale in bɛɛ kɔnɔ, o y’a jira ko KGF-10 ye jɔcogo caman sɛmɛntiya minnu ye fototalisi dɔgɔyali sabati.
Nin kalan in bɛ fototalan dɔ jira a siɲɛ fɔlɔ la, min bɛ baara kɛ kosɛbɛ, min bɛ kɛ ni fɛn kelen ye, nɛgɛ nafama tɛ min na, min sinsinnen bɛ tintin kan, walasa ka gazi ɲuman jiginni teliya ka kɛ fɔmati ye. KGF-10 ka jogo kabakoma minnu sɔrɔla jɛkulu fɛ, olu bɛ sira kura da mɔgɔw ɲɛ na walasa a ka kɛ fototalan ye walew la i n’a fɔ ka CO2 bɔli dɔgɔya ni tile fanga ye.
Karamɔgɔ Maeda y’a kuncɛ ko: “An ka jaabiw b’a jira ko MOFw bɛ se ka kɛ yɔrɔ ye walasa ka baara kɛ ni nɛgɛw ye minnu tɛ baga ye, minnu musaka ka dɔgɔ, ani minnu nafa ka bon dugukolo la walasa ka fototalan baarakɛcogo ɲumanw dilan minnu ka teli ka sɔrɔ ni nɛgɛ molekilɛriw ye.”.
Kamakura Y et al (2023) Tin(II)-based metal-organic frameworks bɛ se ka gazi ɲuman dɔgɔyali kɛcogo ɲuman ni sugandilen kɛ walasa ka sɔrɔ yeelen yelen kɔrɔ. Chimie appliquée, diɲɛ kɔnɔ. doi:10.1002/ani.202305923. Bamako, Mali
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Aw ye Bruer ka Hysitron PI 89 SEM picoindenter dɔn, o ye picoindenter ye min bɛ se ka kɛ ni nanomekaniki hakɛ sɛgɛsɛgɛli ye in situ.
Diɲɛ semikɔndukiri suguya donna waati duman dɔ la. Puce (puce) fɛɛrɛ ɲinini ye baara in bila sen kan ani k’a bali, wa sisan puce (puce) dɛsɛ bɛna to senna waati dɔ kɔnɔ. Sisan kow bɛ se ka kɛ sababu ye ka baara in ka siniɲɛsigi cogoya, wa o cogoya bɛna taa a fɛ ka taa ɲɛ.
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San laban ninnu na, fɛnw ka Ɛntɛrinɛti donna teliya la baarakɛyɔrɔ bɛɛ la, nka a nafa ka bon kosɛbɛ kuran mɔbiliko la.