Ka whakamahia e mātou ngā pihikete hei whakapai ake i tō wheako. Mā te haere tonu ki te tirotiro i tēnei pae, e whakaae ana koe ki tā mātou whakamahinga o ngā pihikete. Ētahi atu kōrero.
Nā te hiahia tonu o te ōhanga mō ngā wahie waro-nui kua piki ake te hauhā waro (CO2) i te āhuarangi. Ahakoa ngā mahi hei whakaiti i ngā tukunga hauhā waro, kāore i te rawaka hei whakakore i ngā pānga kino o te hau kua noho kē ki te āhuarangi.
Nō reira, kua whakawhanakehia e ngā kaipūtaiao he huarahi auaha hei whakamahi i te hauhā waro kei roto i te āhuarangi mā te huri hei ngota whai hua pērā i te waikawa formic (HCOOH) me te methanol. Ko te whakaiti whakaahua o te hauhā waro mā te whakamahi i te mārama e kitea ana he tikanga noa mō ēnei momo hurihanga.
Kua tino angitu te mahi a tētahi rōpū kaipūtaiao nō te Whare Wānanga Hangarau o Tōkyō, i raro i te kaiārahi a Ahorangi Kazuhiko Maeda, ā, kua tuhia e rātou tēnei ki roto i te pukapuka o te ao "Angewandte Chemie" i te 8 o Mei, 2023.
I hangaia e rātou he anga whakarewa-ora (MOF) e ahu mai ana i te tine e āhei ai te whakaiti whakaahua whiriwhiri i te hauhā waro. I hangaia e ngā kairangahau he MOF hou e ahu mai ana i te tine (Sn) me te tauira matū [SnII2(H3ttc)2.MeOH]n (H3ttc: waikawa trithiocyanuric me MeOH: methanol).
Ko te nuinga o ngā kaiwhakaoho whakaahua CO2 e ahu mai ana i te mārama kitea e tino whai hua ana e whakamahi ana i ngā konganuku utu nui onge hei wāhanga matua. Heoi anō, ko te whakaurunga o te mimiti mārama me ngā mahi whakatere ki roto i tētahi waeine ngota kotahi e titoa ana i te tini o ngā konganuku he wero tonu. Nō reira, he kaitono pai a Sn nā te mea ka taea e ia te whakaoti i ngā raruraru e rua.
Ko ngā MOF ngā rauemi pai rawa atu mō ngā konganuku me ngā rauemi rauropi, ā, kei te rangahauhia ngā MOF hei huarahi kē atu i ngā kaiwhakaoho whakaahua whenua onge tuku iho.
He kōwhiringa pea te Sn mō ngā kaiwhakaoho whakaahua e hangai ana ki te MOF nā te mea ka taea e ia te mahi hei kaiwhakaoho me te kaihoroi i te wā o te tukanga whakaoho whakaahua. Ahakoa kua rangahaua whānuitia ngā MOF e hangai ana ki te mata, te rino, me te zirconium, he iti noa iho ngā mōhiotanga mō ngā MOF e hangai ana ki te tine.
I whakamahia te H3ttc, te MeOH me te tine chloride hei kai tīmatanga mō te whakarite i te MOF KGF-10 e ahu mai ana i te tine, ā, i whakatau ngā kairangahau ki te whakamahi i te 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole. He kaituku irahiko, he pūtake hoki nō te hauwai.
Kātahi ka tukuna te hua o te KGF-10 ki ngā tukanga tātari maha. I kitea e rātou he 2.5 eV te āputa o te rauemi, ka mimiti i ngā roangaru mārama e kitea ana, ā, he iti noa te kaha mimiti o te hauhā waro.
I te māramatanga o ngā kaipūtaiao ki ngā āhuatanga ā-tinana me te matū o tēnei rauemi hou, ka whakamahia e rātou hei whakatere i te whakaiti i te hauhā waro i te aroaro o te mārama e kitea ana. I kitea e rātou ka taea e te KGF-10 te huri i te CO2 ki te formate (HCOO–) me te whai huatanga tae atu ki te 99% me te kore e hiahiatia he photosensitizers, he catalysts rānei.
He rekoata teitei rawa atu hoki tōna hua matū kitea (te ōwehenga o te maha o ngā irahiko e uru ana ki te tauhohenga ki te tapeke o ngā photon taupatupatu) o te 9.8% i te roanga ngaru o te 400 nm. I tua atu, i whakaatuhia e te tātari hanganga i mahia puta noa i te tauhohenga kua pāngia a KGF-10 e ngā whakarerekētanga hanganga i whakatairanga i te whakaiti photocatalytic.
Ko tēnei rangahau te wā tuatahi e whakaatu ana i tētahi whakakorikori whakaahua tino whai hua, kotahi-wāhanga, kāore he konganuku utu nui, he mea hanga ki te tine hei whakatere i te hurihanga o te hauhā waro ki te formate. Ko ngā āhuatanga whakamiharo o KGF-10 i kitea e te tīma e whakatuwhera ana i ngā huarahi hou mō tōna whakamahinga hei whakakorikori whakaahua i roto i ngā tukanga pēnei i te whakaiti i ngā tukunga CO2 mā te whakamahi i te pūngao o te rā.
I whakatau a Ahorangi Maeda: "E whakaatu ana ā mātou hua ka taea e ngā MOF te whakamahi hei tūāpapa mō te whakamahi i ngā konganuku kore-paitini, iti te utu, me te whai rawa i te whenua hei hanga i ngā mahi whakaahua-whakakorikori pai ake e kore e taea te whakatutuki mā te whakamahi i ngā matatini konganuku ngota."
Kamakura Y et al (2023) Mā ngā anga whakarewa-oraora e hangai ana ki te Tin(II) ka taea te whakaiti me te whiriwhiri i te hauhā waro kia puta i raro i te mārama e kitea ana. Matū Whakamahi, Putanga Ao. doi:10.1002/ani.202305923
I roto i tēnei uiuinga, ka matapakihia e Tākuta Stuart Wright, Kairangahau Matua i Gatan/EDAX, me AZoMaterials ngā whakamahinga maha o te diffraction backscatter electron (EBSD) i roto i te pūtaiao rauemi me te mahi whakarewa.
I roto i tēnei uiuinga, ka matapakihia e AZoM ngā tau 30 whakamiharo o te wheako o Avantes ki te tirotiro ira, tā rātou kaupapa me te heke mai o te raina hua me te Kaiwhakahaere Hua o Avantes, a Ger Loop.
I roto i tēnei uiuinga, ka kōrero a AZoM ki a Andrew Storey o LECO mō te whakamātautau ira-ā-kanohi me ngā āheinga e tukuna ana e te LECO GDS950.
Ka whakapai ake ngā kāmera kanapa mahi-teitei a ClearView® i te mahi a te karu hiko tuku noa (TEM).
He mīhini kuru pai mahi-rua te XRF Scientific Orbis Laboratory Jaw Crusher, ā, ka taea e tōna kaha ki te kuru kauae te whakaiti i te rahi o te tauira tae atu ki te 55 ngā wā o tōna rahi taketake.
Akohia te Hysitron PI 89 SEM picoindenter a Bruer, he picoindenter hou rawa atu mō te tātari nanomechanical tauanga in situ.
Kua uru te mākete haurua-ā-ringa o te ao ki tētahi wā whakahihiri. Nā te hiahia mō te hangarau maramara i akiaki, i whakararu hoki i te umanga, ā, e matapaetia ana ka haere tonu te korenga o ngā maramara mō tētahi wā. Tērā pea ka hanga e ngā au o nāianei te heke mai o te umanga, ā, ka haere tonu tēnei au.
Ko te rerekētanga matua i waenga i ngā pākahiko graphene me ngā pākahiko totoka ko te hanganga o ia irahiko. Ahakoa he mea whakarerekē te katote i te nuinga o te wā, ka taea hoki te whakamahi i ngā allotropes o te waro hei hanga anode.
I ngā tau tata nei, kua tere te whakaurua mai o te Ipurangi o ngā Mea ki roto i te nuinga o ngā ahumahi, engari he mea tino nui i roto i te ahumahi waka hiko.