Kugudubuzika mu porous zinthu kumathandizira kuyenda kwa madzi abwino kuwalekanitsa ndi madzi olemera.
Gulu lofufuza motsogozedwa ndi Susumu Kitagawa wa Kyoto University Institute for Cell-Material Sciences (iCeMS), Japan ndi Cheng Gu wa South China University of Technology, China apanga zinthu zomwe zimatha kulekanitsa bwino madzi olemera ndi madzi abwinobwino kutentha. Mpaka pano, njirayi yakhala yovuta kwambiri komanso yowonjezera mphamvu. Zomwe zapezazi zimakhudzanso njira zamafakitale - komanso zachilengedwe - zomwe zimaphatikizapo kugwiritsa ntchito mitundu yosiyanasiyana ya molekyulu yomweyo. Asayansi anafotokoza zotsatira zawo mu magazini Nature.
Ma Isotopologues ndi mamolekyu omwe ali ndi chilinganizo chamankhwala chomwechi ndipo maatomu awo amalumikizana mofanana, koma maatomu awo amodzi ali ndi nambala yosiyana ya ma neutroni kuposa molekyu ya kholo. Mwachitsanzo, molekyulu yamadzi (H2O) amapangidwa ndi mpweya umodzi ndi maatomu awiri a haidrojeni. Pakati pa maatomu onse a haidrojeni muli pulotoni imodzi ndipo mulibe neutroni. M'madzi olemera (D2O), kumbali ina, ma atomu a deuterium (D) ndi ma isotopu a haidrojeni okhala ndi ma nuclei okhala ndi pulotoni imodzi ndi neutroni imodzi. Madzi ochuluka amagwira ntchito pamagetsi a nyukiliya, kujambula zithunzi zachipatala, ndi kufufuza zamoyo.
Wasayansi wina dzina lake Cheng Gu anati: “Maziko a madzi ndi ena mwa zinthu zovuta kwambiri kuzilekanitsa chifukwa n’zofanana kwambiri. "Ntchito yathu idapereka njira zomwe sizinachitikepo zolekanitsa ma isotopologues amadzi pogwiritsa ntchito njira yolekanitsa ya adsorption."
Gu ndi katswiri wamankhwala Susumu Kitagawa, pamodzi ndi anzawo, adatengera njira yawo yolekanitsa pa polima polima porous coordination polima (PCP). PCPs ndi porous crystalline zipangizo zopangidwa ndi zitsulo mfundo zolumikizidwa ndi organic linkers. Gululo linayesa ma PCP awiri opangidwa ndi mitundu yosiyanasiyana yolumikizira.
Chomwe chimapangitsa ma PCP awo kukhala ofunika kwambiri pakulekanitsa kwa isotopologue ndikuti zolumikizira zimatembenuka zikatenthedwa bwino. Kutembenuza uku kumakhala ngati chipata, kulola mamolekyu kudutsa kuchokera ku 'khola' mu PCP kupita ku lina. Kuyenda kumatsekedwa pamene zinthuzo zitakhazikika.
Asayansi ataulula 'flip-flop dynamic crystals' ku nthunzi yomwe ili ndi madzi abwinobwino, olemera komanso olemera pang'ono kenako ndikuwotha pang'ono, amawaza madzi abwinobwino mwachangu kuposa momwe amachitira ndi ma isotopologues awiri aja. Chofunika kwambiri, njirayi inachitika mkati mwa kutentha kwa chipinda.
"Kulekanitsa kwamadzi kwa isotopologues m'ntchito yathu ndikopambana kwambiri kuposa njira wamba chifukwa cha kusankha kwakukulu pakuchita kutentha kwa chipinda," akutero Kitagawa. "Tili ndi chiyembekezo kuti zida zatsopano zotsogozedwa ndi ntchito yathu zipangidwa kuti zilekanitse ma isotopologues ena."
Reference: "Kulekanitsa ma isotopologues amadzi pogwiritsa ntchito zida zowongolera kufalikira" lolemba Yan Su, Ken-ichi Otake, Jia-Jia Zheng, Satoshi Horike, Susumu Kitagawa ndi Cheng Gu, 9 Novembala, Nature.
DOI: 10.1038/s41586-022-05310-y
