KANAZAWA, Japan, June 8, 2023 /PRNewswire/ — Basikuvwuntauzya baku Kanazawa University bakaamba mbuli bbazu liteteete kapati lya tin disulfide mbolikonzya kubelesyegwa kufwambaanya kucesya kwa carbon dioxide. kubantu batakwe kaboni.
Kubelesya alimwi muya uutegwa carbon dioxide (CO2) uuzwa mumafakitali nchintu cheelede kuchitwa mukuyandaula bantu kuti babe abukkale butakwe kaboni. nkaambo kaako, ma electrocatalysts aakonzya kusandula CO2 kuba zimwi zintu zitali ntenda zilimukwiiya loko. Chiinga chazintu zyizyibidwe kuti nzibeela zyobile (2D) zya metal dichalcogenides zilakonzya kuba nzila zyakubelesya magesi mukusandula CO, pesi eezyi zintu kanjikanji zilasumpula kuzundana, akulesya kubeleka kwazyo. Yasufumi Takahashi ababelesinyina ku Kanazawa University's Nanobiology Science Institute (WPI-NanoLSI) bakajana nsimbi iijisi zibeela zyobile iikonzya kucesya CO2 kuti ibe asidi ya formic, kutali buyo yachilengwaleza. Kwiindawo, ooku kujatana nchintu chili akati-akati. chizwa mukupanga makemikalu.
Takahashi ababelesinyina bakakozyanisya mulimo wa disulfide uujisi zibeela zyobile (MoS2) a tin disulfide (SnS2). Zyoonse zyobile nzintu zyobile zyabutale dichalcogenides, eechi chamamanino nchintu chibotu nkaambo tinini iisalala ilizyibidwe kuti njiipa kuti kube asidi yafoomu. Kusunkwa kwamagesi kwakatondeezya kuti kusanduka kwa hydrogen (HER) kulafwambaanizyigwa kubelesya MoS2 muciindi chakusanduka kwa CO2. HER chaamba nsandulo iipanga haayidirojeni, eeyo iigwasya aawo notuyanda kupanga mafuta aa haayidirojeni, asi muchiimo chakucheya kwa CO2, ninzila iitayandiki yakuzundana. Kulubazu lumwi, SnS2 yakatondezya mulimo mubotu wakucesya CO2 mpawo yakalesya HER. Basikuvwuntauzya alimwi bakabweza zipimyo zya electrochemical zya bulk SnS2 powder mpawo bakajana kuti tiiyakali kubeleka pe mukucesya CO2.
Kuti tumvwisisisye aawo masena aabeleka mu SnS2 akuti nkamboonzi chintu cha 2D nchichita obotu kwiinda chintu chiingi, basayaansi bakabelesya nzila iitegwa scanning cell electrochemical microscopy (SECCM). SECCM ibelesyegwa mbuli nanopipette, ipanga nanoscale meniscus-shaped electrochemical cell yakubelesya ma probe aakonzya kumvwisisisya zyintu zicitika atala aazitondezyo. Kupima kwakatondeezya kuti busena boonse bwa SnS2 bwakali anguzu, kutali buyo "pulatifomu" naa "mumbali" zibeela zyakali muchikozyano. Eezi alimwi zipandulula kaambo 2D SnS2 njiijisi mulimo mupati kweelanisigwa a bulk SnS2.
Kubalila kupa kumvwisisisya kumbi kujatikizya kusanduka kwamakemikalu kuchitika. Mubwini, kupanga asidi yafoomu kwajanwa kuti ninzila mbotu yakuchita zintu aawo 2D SnS2 noibelesyegwa mbuli chintu chipa kuti kube kuchincha.
Zyakajanwa a Takahashi ababelesinyina zitondezya ntaamu iiyandika kapati yakubelesya magesi aajisi zibeela zyobile mukubelesya magesi mukucesya CO2. Basayaansi baamba kuti: "Eezyi mpindu ziyoopa kumvwisisisya kubotu akusumpula nzila zyobile zya metal dichalcogenide electrocatalysis yakugwisya kaboni dayokisayidi kuchitila kuti kube ma hydrocarbons, ma alcohols, ma fatty acids ama alkenes kakunyina ntenda.
Mapepa aajisi zibeela zyobile (2D) zya dichalcogenides zyabutale nzintu zyamusyobo wa MX2 oomo M moili atomu yabutale, mbuli molybdenum (Mo) naa tin (Sn), mpawo X moili atomu ya chalcogen, mbuli sulfur (C). Bupange bulakonzya kwaambwa mbuli bbazu lya ma atomu aa X atala a bbazu lya ma atomu aa M, eelyo lili atalaa bbazu lya ma atomu aa X. Ma dichalcogenides aabutale aajisi zibeela zyobile ali mukabunga kazyintu zyaambwa kuti zibeela zyobile (eezyo zibikkilizya graphene), eezi zyaamba kuti zilateteeta. Zintu zya 2D kanjikanji zilaa bube bwiindene abwa bulk (3D).
Ma dichalcogenides aabutale aajisi zibeela zyobile akavwuntauzyigwa akaambo kakubeleka kwawo kwakubelesya magesi mukusanduka kwa hydrogen (HER), nzila yamakemikalu iipanga hydrogen. Pesi lino, Yasufumi Takahashi ababelesinyina ku Yunivesiti yaku Kanazawa bakajana kuti nsimbi zyobile zya dichalcogenide SnS2 tazitondezyi mulimo wa HER; eechi nchintu chiyandikana loko mubukkale bwanzila.
Yusuke Kawabe, Yoshikazu Ito, Yuta Hori, Suresh Kukunuri, Fumiya Shiokawa, Tomohiko Nishiuchi, Samuel Chon, Kosuke Katagiri, Zeyu Xi, Chikai Lee, Yasuteru Shigeta a Yasufumi Takahashi. Ipuleti 1T/1H-SnS2 yakutola CO2 kwiinda mukubelesya magesi, ACS XX, XXX–XXX (2023).
Mutwe: Kusunkwa kwakubelesya ma electrochemical microscopy aamaseelo kuti twiiye mulimo wa catalytic wamapepa aa SnS2 kucesya kuzwa kwa CO2.
Chikolo cha Nanobiological cha Yunivesiti yaku Kanazawa (NanoLSI) chakatalisyigwa mu 2017 mbuli chibeela cha pulogilamu ya MEXT. Makanze aapulogilamu ngakuti kube busena bwakuvwuntauzya bwanyika yoonse. Kuswaanganya luzibo luyandikana loko mukulanga zyintu zipona, NanoLSI yakatalisya "tekkinoloji ya nanoendoscopy" yakutondezya, kulanga-langa akubelesya zintu zipona kutegwa tujane luzibo lwanzila zyeendelezya zintu zicitika mubuumi mbuli malwazi.
Mbuli yunivesiti iisololela mulwiiyo lwabantu boonse kunkomwe ya Lwizi lwa Japani, Yunivesiti ya Kanazawa yakagwasya kapati mulwiiyo lwaatala akuvwuntauzya mu Japani kuzwa niyakatalisyigwa mu 1949. Yunivesiti eeyi ilijisi makkoleji otatwe azikolo zili kkumi amusanu azibili ziyiisya ziiyo zilimbuli zyabusilisi, kkompiyuta, antoomwe azyabantu.
Yunivesiti ili mu Kanazawa, dolopo lizyibidwe akaambo kamakani aakaindi azilengwa, kunkomwe ya Lwizi lwa Japani. Kuzwa muchiindi cha feudal (1598-1867), Kanazawa wakakkomana abulemu bwabusongo. Yunivesiti yaku Kanazawa yaandaanizyidwe muzibeela zyobile zipati, Kakuma a Takaramachi, mpo ilijisi basicikolo bali 10,200, bali 600 akati kabo mbasikwiiya bazwa kulizimwi nyika.
Langa makani aakusaanguna: https://www.prnewswire.com/news-releases/kanazawa-university-research-enhancing-carbon-dioxide-reduction-301846809.html