KANAZAWA, Japan, Juun 8, 2023 /PRNewswire/ — Ndị nchọpụta Mahadum Kanazawa kọrọ otu esi eji oyi akwa tin disulfide dị gịrịgịrị mee ngwa ngwa iji belata kemịkalụ nke carbon dioxide. maka ọha mmadụ na-anọpụ iche na carbon.
Imegharị carbon dioxide (CO2) nke sitere na usoro ụlọ ọrụ mmepụta ihe dị mkpa n'ọchịchọ ngwa ngwa nke ụmụ mmadụ maka ọha mmadụ na-adịgide adịgide, nke na-anaghị etinye carbon n'ọrụ. N'ihi nke a, a na-amụ ihe gbasara electrocatalysts ndị nwere ike ịgbanwe CO2 nke ọma ka ọ bụrụ ngwaahịa kemịkalụ ndị ọzọ na-adịghị emerụ ahụ ugbu a. Otu ihe a maara dị ka metal dichalcogenides abụọ (2D) bụ ndị a ga-ahọrọ dị ka electrocatalysts maka mgbanwe CO, mana ihe ndị a na-akwalitekwa mmeghachi omume asọmpi, na-ebelata arụmọrụ ha. Yasufumi Takahashi na ndị ọrụ ibe ya na Nanobiology Science Institute nke Mahadum Kanazawa (WPI-NanoLSI) achọpụtala dichalcogenide metal abụọ nke nwere ike ibelata CO2 ka ọ bụrụ formic acid nke ọma, ọ bụghị naanị site na okike. Ọzọkwa, njikọ a bụ njikọ dị n'etiti. ngwaahịa nke mmepụta kemịkalụ.
Takahashi na ndị ọrụ ibe ya tụnyere ọrụ catalytic nke disulfide akụkụ abụọ (MoS2) na tin disulfide (SnS2). Ha abụọ bụ dichalcogenides metal nwere akụkụ abụọ, nke ikpeazụ na-adọrọ mmasị karịsịa n'ihi na a maara tin dị ọcha dị ka ihe na-akpali mmepụta nke formic acid. Nnwale electrochemical nke ihe ndị a gosiri na mmeghachi omume evolushọn hydrogen (HER) na-eme ngwa ngwa site na iji MoS2 kama ịgbanwe CO2. HER na-ezo aka na mmeghachi omume nke na-emepụta hydrogen, nke bara uru mgbe a na-achọ imepụta mmanụ hydrogen, mana n'ihe gbasara mbelata CO2, ọ bụ usoro asọmpi na-adịghị mma. N'aka nke ọzọ, SnS2 gosipụtara ọrụ dị mma na-ebelata CO2 ma gbochie HER. Ndị nchọpụta ahụ lerekwa nha electrochemical nke ntụ SnS2 buru ibu ma chọpụta na ọ naghị arụ ọrụ nke ọma na mbelata catalytic nke CO2.
Iji ghọta ebe ebe ndị na-arụ ọrụ na catalytic dị na SnS2 na ihe kpatara ihe 2D ji arụ ọrụ nke ọma karịa ihe mejupụtara buru ibu, ndị ọkà mmụta sayensị jiri usoro a na-akpọ scanning cell electrochemical microscopy (SECCM). A na-eji SECCM dị ka nanopipette, na-emepụta sel electrochemical dị ka nanoscale meniscus maka nyocha ndị na-enwe mmetụta na mmeghachi omume elu na ihe nlele. Nha ndị ahụ gosiri na elu dum nke mpempe akwụkwọ SnS2 na-arụ ọrụ na catalytic, ọ bụghị naanị ihe "ikpo okwu" ma ọ bụ "ọnụ" dị na nhazi ahụ. Nke a na-akọwakwa ihe mere 2D SnS2 ji nwee ọrụ dị elu ma e jiri ya tụnyere SnS2 buru ibu.
Ngụkọta ihe ndị a na-enye nghọta ka mma gbasara mmeghachi omume kemịkalụ na-eme. Karịsịa, a chọpụtala na mmepụta nke formic acid bụ ụzọ mmeghachi omume dị mma maka ike mgbe ejiri 2D SnS2 mee ihe dị ka ihe na-akpali akpali.
Ihe Takahashi na ndị ọrụ ibe ya chọpụtara bụ nzọụkwụ dị mkpa n'iji electrocatalysts abụọ eme ihe n'ibelata CO2 electrochemical. Ndị ọkà mmụta sayensị ahụ kwuru, sị: "Nsonaazụ ndị a ga-enye nghọta ka mma na mmepe nke atụmatụ electrocatalysis metal dichalcogenide abụọ maka mbelata electrochemical nke carbon dioxide iji mepụta hydrocarbons, alcohols, fatty acids na alkenes na-enweghị mmetụta ọjọọ. ngwaahịa."
Mpempe akwụkwọ (ma ọ bụ monolayer) nke dichalcogenides ígwè bụ ụdị ihe MX2 ebe M bụ atọm ígwè, dị ka molybdenum (Mo) ma ọ bụ tin (Sn), na X bụ atọm chalcogen, dị ka sọlfọ (C). Enwere ike igosipụta nhazi ahụ dị ka oyi akwa nke atọm X n'elu oyi akwa nke atọm M, nke na-adịkwa na oyi akwa nke atọm X. Dichalcogenides ígwè nwere akụkụ abụọ so na klas nke ihe a na-akpọ akụkụ abụọ (nke gụnyekwara graphene), nke pụtara na ha dị gịrịgịrị. Ihe 2D na-enwekarị ihe dị iche iche nke anụ ahụ karịa ndị otu ha buru ibu (3D).
A nyochaala dichalcogenides ígwè nwere akụkụ abụọ maka ọrụ electrocatalytic ha na mmeghachi omume evolushọn hydrogen (HER), usoro kemịkalụ nke na-emepụta hydrogen. Mana ugbu a, Yasufumi Takahashi na ndị ọrụ ibe ya na Mahadum Kanazawa achọpụtala na dichalcogenide metal nwere akụkụ abụọ SnS2 anaghị egosi ọrụ HER catalytic; nke a bụ ihe dị oke mkpa n'ọnọdụ atụmatụ nke ụzọ ahụ.
Yusuke Kawabe, Yoshikazu Ito, Yuta Hori, Suresh Kukunuri, Fumiya Shiokawa, Tomohiko Nishiuchi, Samuel Chon, Kosuke Katagiri, Zeyu Xi, Chikai Lee, Yasuteru Shigeta na Yasufumi Takahashi. Efere 1T/1H-SnS2 maka nnyefe electrochemical nke CO2, ACS XX, XXX-XXX (2023).
Aha: Nnyocha nnwale na microscopy electrochemical nke mkpụrụ ndụ iji mụọ ọrụ catalytic nke mpempe akwụkwọ SnS2 iji belata mwepụta CO2.
E guzobere Nanobiological Institute of Kanazawa University (NanoLSI) na 2017 dịka akụkụ nke mmemme nke ebe nyocha mba ụwa kachasị elu n'ụwa MEXT. Ebumnuche nke mmemme a bụ ịmepụta ebe nyocha klaasị ụwa. NanoLSI na-ejikọta ihe ọmụma kachasị mkpa na nyocha ihe omimi bayoloji, ọ na-eguzobe "teknụzụ nanoendoscopy" maka onyonyo ozugbo, nyocha na njikwa nke biomolecules iji nweta nghọta n'ime usoro ndị na-achịkwa ihe ndị dị ndụ dịka ọrịa.
Dịka mahadum agụmakwụkwọ izugbe kachasị elu n'ụsọ oké osimiri nke Japan, Mahadum Kanazawa enyela aka dị ukwuu na agụmakwụkwọ ka elu na nyocha agụmakwụkwọ na Japan kemgbe e guzobere ya na 1949. Mahadum ahụ nwere kọleji atọ na ụlọ akwụkwọ iri na asaa na-enye ọzụzụ dịka ọgwụ, kọmputa, na mmekọrịta mmadụ na ibe ya.
Mahadum a dị na Kanazawa, obodo a ma ama maka akụkọ ihe mere eme na omenala ya, n'ụsọ oké osimiri Japan. Kemgbe oge feudal (1598-1867), Kanazawa enwetawo ugwu ọgụgụ isi dị elu. E kewara Mahadum Kanazawa ụzọ abụọ bụ isi, Kakuma na Takaramachi, ma nwee ihe dị ka ụmụ akwụkwọ 10,200, 600 n'ime ha bụ ụmụ akwụkwọ mba ofesi.
Lee ihe dị na mbụ: https://www.prnewswire.com/news-releases/kanazawa-university-research-enhancing-carbon-dioxide-reduction-301846809.html