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Economy-in carbon tamna fuel a mamawh chhunzawm zel avangin boruakah carbon dioxide (CO2) a pung nasa hle. Carbon dioxide emission tihtlem tumin theihtawp chhuah ni mah se, boruakah gas awm tawhnain a tihchhiatna chu tihdanglam nan a tawk lo.
Chuvangin scientist te chuan boruak chhunga carbon dioxide awm tawh chu formic acid (HCOOH) leh methanol ang chi molecule tangkai takah an chantir a, hman dan tur thil siam chhuah an siam chhuak ta a ni. Visible light hmanga carbon dioxide photocatalytic photoreduction hi chutiang inthlak danglamna atana hmanraw hman tlanglawn tak a ni.
Tokyo Institute of Technology atanga scientist team, Professor Kazuhiko Maeda kaihhruai chuan hmasawnna nasa tak an nei a, May 8, 2023-a international publication “Angewandte Chemie”-ah an ziak lut a ni.
Tin-based metal-organic framework (MOF) an siam a, hei hian carbon dioxide chu selective photoreduction a siam thei a ni. Researcher te hian tin (Sn)-based MOF thar an siam a, chemical formula [SnII2(H3ttc)2.MeOH]n (H3ttc: trithiocyanuric acid leh MeOH: methanol) hmangin an siam a ni.
Visible light-based CO2 photocatalysts efficient tak tak tam zawk chuan an component ber atan hian rare precious metals an hmang thin. Chubakah, light absorption leh catalytic function te chu metal tam tak atanga siam molecular unit pakhata inzawmkhawm chu hun rei tak atanga harsatna awm tawh a la ni reng bawk. Chutiang chuan Sn hi harsatna pahnih a chinfel theih avangin candidate tha tak a ni.
MOFs hi metal leh organic materials siamna atana hmanraw tha ber a ni a, MOFs hi traditional rare earth photocatalysts aiin greener alternative atan zirchian mek a ni.
Sn hi MOF-based photocatalyst tan chuan duhthlan tur tha tak a ni a, a chhan chu photocatalytic process chhung hian catalyst leh scavenger angin a thawk thei a ni. Lead, iron leh zirconium-based MOF te hi zirchian nasa tak ni mahse, tin-based MOF chungchang hi hriat tur a tlem hle.
Tin-based MOF KGF-10 siam nan hian H3ttc, MeOH leh tin chloride te chu bul tanna atan hman a ni a, zirchiangtute chuan 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole hman an rel ta a ni. electron donor leh hydrogen source angin a thawk a ni.
Chumi hnuah chuan KGF-10 lo chhuak chu analytical process hrang hrangah an kalpui leh thin. An hmuhchhuah dan chuan he material hian bandgap 2.5 eV a nei a, hmuh theih light wavelength a absorb a, carbon dioxide adsorption capacity a nei tlem hle bawk.
Scientist-te chuan he thil thar hi a physical leh chemical property an hriatthiam hnu chuan, hmuh theih êng awmna hmuna carbon dioxide tihtlem nan an hmang ta a ni. KGF-10 hian CO2 chu 99% thlenga tha takin formate (HCOO–) ah a thlak danglam thei a, photosensitizer emaw catalyst emaw a mamawh belh ngai lo.
Tin, record sang tak apparent quantum yield (reaction-a electron tel zat leh incident photon awm zawng zawng ratio) 9.8% wavelength 400 nm-ah record sang tak a nei bawk. Chubakah, reaction chhung zawnga structural analysis an neihah chuan KGF-10 hian structural modifications a tawk a, chu chuan photocatalytic reduction a tichak a ni.
He zirchianna hian a vawi khat nan carbon dioxide chu formate-a inthlak chakna tur, efficient tak, single-component, precious metal-free tin-based photocatalyst a rawn pholang a ni. Team-in KGF-10 thil nihna mak tak tak an hmuhchhuah hian ni chakna hmanga CO2 emission tihtlem ang chi process-a photocatalyst atana hman theihna tur kawng thar a hawng a ni.
Professor Maeda chuan heti hian a tâwp a: “Kan result-te chuan MOF-te chu molecular metal complex hmanga tih theih loh, a tlangpuiin photocatalytic function ṭha zâwk siam nân, rimchhia lo, man tlawm, leh leilung hausa metal hmanna platform angin a thawk thei tih a târ lang a ni,” a ti.
Kamakura Y et al (2023) Tin(II)-based metal-organic frameworks hmang hian carbon dioxide chu hmuh theih êng hnuaia siam chhuah theih turin efficient leh selective reduction a siam thei a ni. Applied Chemistry, International Edition-a tihchhuah a ni. A rilru a hah lutuk chuan a rilru a buai em em a. 202305923
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