KANAZAWA, Ubuyapani, 8 Kamena 2023 /PRNewswire/ — Abashakashatsi ba Kaminuza ya Kanazawa batangaza uburyo agace gato cyane ka disulfide ya tin gashobora gukoreshwa mu kwihutisha igabanuka rya dioxyde de carbone. ku muryango udafite aho ubogamiye kuri karubone.
Gusubiramo dioxyde de carbone (CO2) iva mu nganda ni ngombwa mu gushaka byihutirwa kwa muntu kugira ngo habeho umuryango urambye kandi udafite karubone. Kubera iyo mpamvu, electrocatalysts zishobora guhindura CO2 neza mu bindi bicuruzwa bya shimi bidatera ingaruka mbi cyane ubu ziri kwigwa cyane. Ubwoko bw'ibikoresho bizwi nka two-dichalcogenides metal (2D) ni byo bishobora kuba electrocatalysts mu guhindura CO, ariko ibi bikoresho akenshi binateza imbere impinduka zihanganye, bikagabanya imikorere yabyo. Yasufumi Takahashi na bagenzi be bo muri Kaminuza ya Kanazawa's Nanobiology Science Institute (WPI-NanoLSI) bagaragaje two-dichalcogenide metal ishobora kugabanya CO2 muri aside formic, atari ikomoka ku bidukikije gusa. Byongeye kandi, iyi sano ni isano iri hagati y'ibikomoka ku gukora chemical.
Takahashi na bagenzi be bagereranije imikorere ya disulfide ifite imiterere ibiri (MoS2) na disulfide ya tin (SnS2). Zombi ni dichalcogenides z’icyuma zifite imiterere ibiri, iyi ya nyuma ikaba ari ingenzi cyane kuko tin nziza izwiho kuba imbarutso yo gukora aside formike. Isuzuma ry’ibi bintu ryagaragaje ko reaction ya hydrogen evolution (HER) yihutishwa hakoreshejwe MoS2 aho guhindura CO2. HER yerekeza ku gikorwa gitanga hydrogen, ikaba ingirakamaro iyo igamije gukora lisansi ya hydrogen, ariko mu gihe CO2 igabanuka, ni inzira idahwitse. Ku rundi ruhande, SnS2 yagaragaje imikorere myiza yo kugabanya CO2 kandi yabujije HER. Abashakashatsi banapimye ifu ya SnS2 mu buryo bwa electrochemical basanga idakora cyane mu kugabanya CO2 mu buryo bwa catalytic.
Kugira ngo basobanukirwe aho ahantu hakora ibintu bishya muri SnS2 n'impamvu ibikoresho bya 2D bikora neza kurusha ibintu byinshi, abahanga bakoresheje uburyo bwitwa scanning cell electrochemical microscopy (SECCM). SECCM ikoreshwa nk'agakoresho ka nanopipette, ikora akaremangingo ka electrochemical gafite ishusho ya meniscus gafite ishusho ya nanoscale ku bikoresho by'ubushakashatsi bishobora kwanduza imikorere y'ubuso ku bipimo. Ibipimo byagaragaje ko ubuso bwose bw'urupapuro rwa SnS2 bwari bufite uruhare runini mu gukora ibintu bishya, atari ibintu "b'urubuga" cyangwa "inkombe" gusa mu miterere. Ibi kandi bisobanura impamvu 2D SnS2 ifite imikorere myinshi ugereranije na SnS2.
Ibibarura bitanga ibisobanuro birambuye ku mikorere y’ibinyabutabire ibaho. By’umwihariko, ikorwa rya aside formike ryagaragaye ko ari inzira nziza yo gukora ibikorwa iyo 2D SnS2 ikoreshejwe nk'umusemburo.
Ibyavuye muri Takahashi na bagenzi be bigaragaza intambwe ikomeye mu ikoreshwa rya electrocatalysts z’ibice bibiri mu kugabanya CO2 hakoreshejwe electrochemical. Abahanga mu bya siyansi bavuga ko: “Ibi bisubizo bizatanga ubumenyi bwiza n’iterambere ry’ingamba zo gukoresha electrocatalysis y’icyuma cy’ibice bibiri mu kugabanya electrochemical ya dichalcogenide kugira ngo habeho hydrocarbons, alcohols, aside liqueurs na alkenes nta ngaruka mbi zibayeho.”
Impapuro z’ibice bibiri (2D) (cyangwa monolayer) za dichalcogenides z’icyuma ni ibikoresho byo mu bwoko bwa MX2 aho M ari atome y’icyuma, nka molybdenum (Mo) cyangwa tin (Sn), naho X ikaba atome ya chalcogen, nka sulfur (C). Imiterere ishobora kugaragazwa nk’urwego rwa atome X hejuru y’urwego rwa atome M, na yo ikaba iri ku rwego rwa atome X. Dichalcogenides z’icyuma zifite imiterere ibiri ziri mu bwoko bw’ibikoresho byitwa ibikoresho bifite imiterere ibiri (harimo na graphene), bivuze ko bitoshye. Ibikoresho bya 2D akenshi bigira imiterere itandukanye n’ibisanzwe byabyo (3D).
Dichalcogenides z'icyuma zifite imiterere ibiri zakoreweho ubushakashatsi ku mikorere yazo ya electrocatalytic muri hydrogen evolution reaction (HER), inzira y'ibinyabutabire ikora hydrogen. Ariko ubu, Yasufumi Takahashi na bagenzi be bo muri Kaminuza ya Kanazawa basanze dichalcogenide SnS2 y'icyuma ifite imiterere ibiri idagaragaza imikorere ya HER catalytic; iyi ni umwihariko w'ingenzi cyane mu rwego rw'ingenzi rw'inzira.
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. Isahani 1T / 1H-SnS2 yo kohereza amashanyarazi ya CO2, ACS XX, XXX - XXX (2023).
Umutwe: Gusuzuma igerageza ryakozwe kuri mikorosikopi y'amashanyarazi y'uturemangingo kugira ngo higwe imikorere ya katalisike y'impapuro za SnS2 kugira ngo bigabanye imyuka ya CO2.
Ikigo cy’ubushakashatsi ku binyabuzima cya Kaminuza ya Kanazawa (NanoLSI) cyashinzwe mu 2017 nk'igice cya gahunda y'ikigo mpuzamahanga cy’ubushakashatsi ku isi cya MEXT. Intego y'iyi gahunda ni ugushyiraho ikigo cy’ubushakashatsi cyo ku rwego rw'isi. Hamwe n'ubumenyi bw'ingenzi mu gupima ibinyabuzima hakoreshejwe mikorosikopi, NanoLSI ishyiraho "ikoranabuhanga rya nanoendoscopy" ryo gufata amashusho, gusesengura no gukoresha biomolecules kugira ngo hamenyekane uburyo bugenzura imiterere y'ibinyabuzima nk'indwara.
Nk’ishuri rikuru ry’uburezi rusange ku nkombe z’inyanja y’u Buyapani, Kaminuza ya Kanazawa yagize uruhare runini mu burezi bwo hejuru n’ubushakashatsi mu by’ubumenyi mu Buyapani kuva yashingwa mu 1949. Iyi kaminuza ifite amashuri makuru atatu n’amashuri 17 atanga amasomo nk’ubuvuzi, ikoranabuhanga, n’ubumenyi bw’isi.
Iyi kaminuza iherereye i Kanazawa, umujyi uzwiho amateka n'umuco, ku nkombe z'inyanja y'u Buyapani. Kuva mu gihe cya feudal (1598-1867), Kanazawa yagize icyubahiro gikomeye mu by'ubwenge. Kaminuza ya Kanazawa igabanyijemo ibigo bibiri by'ingenzi, Kakuma na Takaramachi, kandi ifite abanyeshuri bagera ku 10.200, 600 muri bo bakaba ari abanyeshuri mpuzamahanga.
Reba ibikubiye mu nyandiko: https://www.prnewswire.com/news-releases/kanazawa-university-research-enhancing-carbon-dioxide-reduction-301846809.html