KANAZAWA, Japan, 8 ga Yuni, 2023 /PRNewswire/ — Masu bincike na Jami'ar Kanazawa sun ba da rahoton yadda za a iya amfani da wani sirara mai kauri na tin disulfide don hanzarta rage sinadarin carbon dioxide. ga al'umma mai tsaka-tsaki ga carbon.
Sake amfani da iskar carbon dioxide (CO2) da ake fitarwa daga ayyukan masana'antu abu ne mai matuƙar muhimmanci a cikin gaggawar da bil'adama ke yi na samun al'umma mai dorewa, wacce ba ta da sinadarin carbon. Saboda wannan dalili, ana yin nazari sosai kan na'urorin lantarki waɗanda za su iya canza CO2 yadda ya kamata zuwa wasu samfuran sinadarai marasa cutarwa. Wani nau'in kayan da aka sani da dichalcogenides na ƙarfe mai girma biyu (2D) su ne 'yan takara a matsayin masu canza CO, amma waɗannan kayan galibi suna haɓaka halayen da ke fafatawa, suna rage ingancinsu. Yasufumi Takahashi da abokan aikinsa a Cibiyar Kimiyya ta Nanobiology ta Jami'ar Kanazawa (WPI-NanoLSI) sun gano dichalcogenide na ƙarfe mai girma biyu wanda zai iya rage CO2 zuwa formic acid yadda ya kamata, ba wai kawai na asali ba. Bugu da ƙari, wannan haɗin haɗin gwiwa ne na tsaka-tsaki. samfurin haɗakar sinadarai.
Takahashi da abokan aikinsa sun kwatanta aikin catalytic na disulfide mai girma biyu (MoS2) da tin disulfide (SnS2). Dukansu dichalcogenides ne na ƙarfe mai girma biyu, na biyun yana da ban sha'awa musamman saboda an san cewa tin mai tsarki yana haifar da haɓakar samar da formic acid. Gwajin lantarki na waɗannan mahaɗan ya nuna cewa amsawar juyin halittar hydrogen (HER) tana ƙaruwa ta amfani da MoS2 maimakon canza CO2. HER tana nufin amsawar da ke samar da hydrogen, wanda ke da amfani lokacin da ake niyyar samar da man hydrogen, amma a yanayin rage CO2, tsari ne mai gasa mara kyau. A gefe guda kuma, SnS2 ya nuna kyakkyawan aikin rage CO2 kuma ya hana HER. Masu binciken sun kuma ɗauki ma'aunin electrochemical na babban foda SnS2 kuma sun gano cewa ba shi da ƙarfi sosai a rage yawan CO2.
Domin fahimtar inda wuraren da ke aiki a cikin SnS2 suke da kuma dalilin da yasa kayan 2D ke aiki mafi kyau fiye da babban mahaɗi, masana kimiyya sun yi amfani da wata dabara da ake kira scanning cell electrochemical microscopy (SECCM). Ana amfani da SECCM azaman nanopipette, yana samar da ƙwayar lantarki mai siffar nanoscale meniscus don bincike waɗanda ke da saurin amsawar saman akan samfura. Ma'aunin ya nuna cewa dukkan saman takardar SnS2 yana aiki da catalytic, ba kawai abubuwan "dandamali" ko "gefen" a cikin tsarin ba. Wannan kuma ya bayyana dalilin da yasa 2D SnS2 ke da aiki mafi girma idan aka kwatanta da babban SnS2.
Lissafi suna ba da ƙarin haske game da halayen sinadarai da ke faruwa. Musamman ma, an gano samuwar formic acid a matsayin hanyar amsawa mai kyau ga kuzari lokacin da aka yi amfani da 2D SnS2 a matsayin mai haɓaka aiki.
Sakamakon Takahashi da abokan aikinsa sun nuna muhimmin mataki wajen amfani da na'urorin electrocatalysts masu girma biyu a cikin aikace-aikacen rage CO2 na lantarki. Masana kimiyya sun ambaci: "Waɗannan sakamakon za su samar da kyakkyawar fahimta da haɓaka dabarun electrocatalysis na ƙarfe dichalcogenide mai girma biyu don rage carbon dioxide na lantarki don samar da hydrocarbons, barasa, fatty acids da alkenes ba tare da illa ba."
Takardu masu girma biyu (2D) (ko kuma layukan ƙarfe guda ɗaya) na dichalcogenides nau'in MX2 ne inda M atom ne na ƙarfe, kamar molybdenum (Mo) ko tin (Sn), kuma X atom ne na chalcogen, kamar sulfur (C). Tsarin za a iya bayyana shi azaman Layer na atom X a saman Layer na atom na M, wanda kuma yana kan Layer na atom na X. Dichalcogenides na ƙarfe masu girma biyu suna cikin wani nau'in abin da ake kira kayan girma biyu (wanda kuma ya haɗa da graphene), wanda ke nufin cewa suna da siriri. Kayan 2D galibi suna da halaye na zahiri daban-daban fiye da takwarorinsu na girma (3D).
An binciki dichalcogenides na ƙarfe masu girma biyu saboda aikin electrocatalytic a cikin amsawar juyin halittar hydrogen (HER), wani tsari na sinadarai da ke samar da hydrogen. Amma yanzu, Yasufumi Takahashi da abokan aikinsa a Jami'ar Kanazawa sun gano cewa dichalcogenide na ƙarfe mai girma biyu SnS2 ba ya nuna aikin HER catalytic; wannan wani muhimmin sifa ne a cikin yanayin dabarun hanyar.
Yusuke Kawabe, Yoshikazu Ito, Yuta Hori, Suresh Kukunuri, Fumiya Shiokawa, Tomohiko Nishiuchi, Samuel Chon, Kosuke Katagiri, Zeyu Xi, Chikai Lee, Yasuteru Shigeta da Yasufumi Takahashi. Plate 1T/1H-SnS2 don canja wurin electrochemical na CO2, ACS XX, XXX-XXX (2023).
Take: Ana yin gwaje-gwaje kan na'urar auna sinadari ta lantarki (electrochemical microscopy) na ƙwayoyin halitta don nazarin aikin catalytic na zanen SnS2 don rage fitar da hayakin CO2.
An kafa Cibiyar Nazarin Halittu ta Jami'ar Kanazawa (NanoLSI) a shekarar 2017 a matsayin wani ɓangare na shirin cibiyar bincike ta duniya mafi girma a duniya ta MEXT. Manufar shirin ita ce ƙirƙirar cibiyar bincike mai daraja ta duniya. Ta hanyar haɗa mafi mahimmancin ilimin binciken halittu, NanoLSI ta kafa "fasahar nanoendoscopy" don ɗaukar hoto kai tsaye, bincike da sarrafa ƙwayoyin halitta don samun fahimta game da hanyoyin da ke sarrafa abubuwan da ke faruwa a rayuwa kamar cututtuka.
A matsayinta na babbar jami'ar ilimi ta gaba ɗaya da ke bakin tekun Tekun Japan, Jami'ar Kanazawa ta ba da gudummawa sosai ga manyan makarantu da bincike a fannin ilimi a Japan tun lokacin da aka kafa ta a shekarar 1949. Jami'ar tana da kwalejoji uku da makarantu 17 waɗanda ke ba da fannoni kamar likitanci, kwamfuta, da ilimin ɗan adam.
Jami'ar tana cikin Kanazawa, birni mai shahara saboda tarihi da al'adunta, a bakin tekun Tekun Japan. Tun zamanin mulkin feudal (1598-1867), Kanazawa ta sami babban matsayi na ilimi. Jami'ar Kanazawa ta kasu kashi biyu manyan makarantu, Kakuma da Takaramachi, kuma tana da ɗalibai kusan 10,200, waɗanda 600 daga cikinsu ɗaliban ƙasashen waje ne.
Duba ainihin abun ciki: https://www.prnewswire.com/news-releases/kanazawa-university-research-enhancing-carbon-dioxide-reduction-301846809.html