KANAZAWA, Iapana, Iune 8, 2023 /PRNewswire/ — Ua hōʻike nā kānaka noiʻi o ke Kulanui ʻo Kanazawa pehea e hiki ai ke hoʻohana ʻia kahi papa lahilahi loa o ka tin disulfide e hoʻolalelale i ka hōʻemi kemika o ke kalapona ʻokikene no kahi kaiāulu kūʻokoʻa kalapona.
ʻO ka hana hou ʻana i ke kalapona ʻokikene (CO2) i hoʻopuka ʻia mai nā kaʻina hana ʻoihana he mea pono ia i ka ʻimi wikiwiki ʻana o ke kanaka no kahi kaiāulu hoʻomau a kūlike ʻole i ke kalapona. No kēia kumu, ke aʻo nui ʻia nei nā electrocatalysts e hiki ke hoʻololi pono i ka CO2 i nā huahana kemika ʻē aʻe ʻaʻole ʻino. ʻO kahi papa o nā mea i ʻike ʻia ʻo nā dichalcogenides metala ʻelua-dimensional (2D) he mau moho e like me nā electrocatalysts no ka hoʻololi ʻana i ka CO, akā hoʻolaha pinepine kēia mau mea i nā hopena hoʻokūkū, e hōʻemi ana i ko lākou pono. Ua ʻike ʻo Yasufumi Takahashi a me nā hoa hana ma ka Nanobiology Science Institute (WPI-NanoLSI) o ke Kulanui ʻo Kanazawa i kahi dichalcogenide metala ʻelua-dimensional e hiki ke hoʻemi pono i ka CO2 i ka waikawa formic, ʻaʻole wale nō ke kumu kūlohelohe. Eia kekahi, he loulou waena kēia pilina. huahana o ka synthesis kemika.
Ua hoʻohālikelike ʻo Takahashi a me nā hoa hana i ka hana catalytic o ka disulfide ʻelua-dimensional (MoS2) a me ka tin disulfide (SnS2). ʻO nā mea ʻelua he dichalcogenides metala ʻelua-dimensional, ʻo ka mea hope he mea hoihoi loa ia no ka mea ua ʻike ʻia ka tin maʻemaʻe he mea hoʻoulu no ka hana ʻana o ka waikawa formic. Ua hōʻike ka hoʻāʻo electrochemical o kēia mau hui e hoʻolalelale ʻia ka hopena hydrogen evolution (HER) me ka hoʻohana ʻana iā MoS2 ma kahi o ka hoʻololi ʻana o CO2. Pili ʻo HER i kahi hopena e hana ai i ka hydrogen, he mea pono ia i ka wā e manaʻo ai e hana i ka wahie hydrogen, akā i ka hihia o ka hōʻemi ʻana o CO2, he hana hoʻokūkū makemake ʻole ʻia. Ma ka ʻaoʻao ʻē aʻe, ua hōʻike ʻo SnS2 i ka hana hoʻemi CO2 maikaʻi a kāohi iā HER. Ua lawe pū nā mea noiʻi i nā ana electrochemical o ka pauka SnS2 nui a ʻike ʻia ʻaʻole ia i hana nui i ka hōʻemi catalytic o CO2.
No ka hoʻomaopopo ʻana i kahi o nā wahi hana catalytically ma SnS2 a no ke aha e hana maikaʻi ai kahi mea 2D ma mua o kahi hui nui, ua hoʻohana nā kānaka ʻepekema i kahi ʻenehana i kapa ʻia ʻo scanning cell electrochemical microscopy (SECCM). Hoʻohana ʻia ka SECCM ma ke ʻano he nanopipette, e hana ana i kahi cell electrochemical nanoscale meniscus no nā probes i pili i nā hopena ʻili ma nā laʻana. Ua hōʻike nā ana ʻana ua hana catalytically ka ʻili holoʻokoʻa o ka pepa SnS2, ʻaʻole wale nā ​​​​mea "kahua" a i ʻole "kaʻe" i loko o ka hale. Hoʻākāka pū kēia i ke kumu he ʻoi aku ka hana o 2D SnS2 i hoʻohālikelike ʻia me ka bulk SnS2.
Hāʻawi nā helu ʻana i ka ʻike hou aku i nā hopena kemika e hana ʻia nei. Ma ke ʻano kūikawā, ua ʻike ʻia ka hoʻokumu ʻia ʻana o ka waikawa formic ma ke ʻano he ala hopena maikaʻi i ka ikehu ke hoʻohana ʻia ʻo 2D SnS2 ma ke ʻano he mea hoʻoulu.
ʻO nā mea i loaʻa iā Takahashi a me nā hoa hana e hōʻailona ana i kahi ʻanuʻu koʻikoʻi i ka hoʻohana ʻana i nā electrocatalysts ʻelua-dimensional i nā noi hoʻemi CO2 electrochemical. Ua ʻōlelo nā kānaka ʻepekema: "E hāʻawi kēia mau hopena i kahi ʻike maikaʻi a me ka hoʻomohala ʻana i kahi hoʻolālā electrocatalysis dichalcogenide metala ʻelua-dimensional no ka hoʻemi electrochemical o ke kalapona dioxide e hana i nā hydrocarbons, alcohols, fatty acids a me alkenes me ka ʻole o nā hopena ʻaoʻao.
ʻO nā pepa ʻelua-dimensional (2D) (a i ʻole monolayers) o nā dichalcogenides metala he mau mea ʻano MX2 kahi ʻo M kahi ʻātoma metala, e like me ka molybdenum (Mo) a i ʻole tin (Sn), a ʻo X kahi ʻātoma chalcogen, e like me ka sulfur (C). Hiki ke hōʻike ʻia ke ʻano ma ke ʻano he papa o nā ʻātoma X ma luna o kahi papa o nā ʻātoma M, kahi e kau ʻia ana ma luna o kahi papa o nā ʻātoma X. No nā dichalcogenides metala ʻelua-dimensional kahi papa o nā mea i kapa ʻia ʻo ʻelua-dimensional (me ka graphene pū kekahi), ʻo ia hoʻi, lahilahi lākou. ʻOkoʻa pinepine nā waiwai kino o nā mea 2D ma mua o ko lākou mau hoa nui (3D).
Ua noiʻi ʻia nā dichalcogenides metala ʻelua-dimensional no kā lākou hana electrocatalytic i ka hydrogen evolution reaction (HER), kahi hana kemika e hana ai i ka hydrogen. Akā i kēia manawa, ua ʻike ʻo Yasufumi Takahashi a me nā hoa hana ma ke Kulanui o Kanazawa ʻaʻole hōʻike ka dichalcogenide metala ʻelua-dimensional SnS2 i ka hana catalytic HER; he waiwai koʻikoʻi loa kēia i loko o ke ʻano hoʻolālā o ke ala.
ʻO Yusuke Kawabe, Yoshikazu Ito, Yuta Hori, Suresh Kukunuri, Fumiya Shiokawa, Tomohiko Nishiuchi, Samuel Chon, Kosuke Katagiri, Zeyu Xi, Chikai Lee, Yasuteru Shigeta a me Yasufumi Takahashi. Papa 1T/1H-SnS2 no ka hoʻoili electrochemical o CO2, ACS XX, XXX–XXX (2023).
Poʻomanaʻo: Ke nānā nei i nā hoʻokolohua ma ka microscopy electrochemical o nā cell e aʻo i ka hana catalytic o nā pepa SnS2 e hōʻemi i nā hoʻokuʻu CO2.
Ua hoʻokumu ʻia ka Nanobiological Institute of Kanazawa University (NanoLSI) i ka makahiki 2017 ma ke ʻano he ʻāpana o ka papahana o ke kikowaena noiʻi honua nui ʻo MEXT. ʻO ka pahuhopu o ka papahana ka hoʻokumu ʻana i kahi kikowaena noiʻi papa honua. Ma ka hoʻohui ʻana i ka ʻike koʻikoʻi loa i ka microscopy probe scanning biological, hoʻokumu ʻo NanoLSI i ka "ʻenehana nanoendoscopy" no ke kiʻi pololei, ka nānā ʻana a me ka hoʻopunipuni ʻana i nā biomolecules e loaʻa ai ka ʻike i nā ʻano hana e kāohi ai i nā hanana ola e like me ka maʻi.
Ma ke ʻano he kulanui hoʻonaʻauao laulā alakaʻi ma ke kahakai o ke Kai o Iapana, ua hāʻawi nui ke Kulanui ʻo Kanazawa i nā haʻawina nui i ka hoʻonaʻauao kiʻekiʻe a me ka noiʻi hoʻonaʻauao ma Iapana mai kona hoʻokumu ʻia ʻana i ka makahiki 1949. He ʻekolu mau koleke a me 17 mau kula o ke kulanui e hāʻawi ana i nā aʻo e like me ka lāʻau lapaʻau, ka helu kamepiula, a me nā humanities.
Aia ke kulanui ma Kanazawa, he kūlanakauhale kaulana no kona mōʻaukala a me ka moʻomeheu, ma ke kahakai o ke Kai o Iapana. Mai ka wā feudal (1598-1867), ua hauʻoli ʻo Kanazawa i kahi hanohano noʻeau mana. Ua māhele ʻia ke Kulanui ʻo Kanazawa i ʻelua mau kahua nui, ʻo Kakuma lāua ʻo Takaramachi, a he 10,200 mau haumāna, 600 o lākou he mau haumāna o ka honua.
E nānā i ka ʻike kumu: https://www.prnewswire.com/news-releases/kanazawa-university-research-enhancing-carbon-dioxide-reduction-301846809.html