Cov kws tshawb fawb ntawm VCU tau tshawb pom ib qho tshuaj uas ua rau muaj kev hloov pauv ntawm cov pa roj carbon dioxide mus rau hauv cov kua qaub formic - qhov kev tshawb pom uas tuaj yeem muab txoj hauv kev ntes cov pa roj carbon tshiab uas tuaj yeem txo qis thaum lub ntiaj teb tab tom ntsib kev hloov pauv huab cua. Ib qho tseem ceeb rau cov pa roj carbon dioxide hauv huab cua.
"Nws paub zoo tias kev loj hlob sai ntawm cov pa roj av hauv huab cua thiab lawv cov teebmeem tsis zoo rau ib puag ncig yog ib qho ntawm cov teeb meem loj uas tib neeg ntsib niaj hnub no," tus kws sau ntawv Dr. Shiv N. Khanna, Commonwealth Professor Emeritus hauv lub chaw haujlwm physics ntawm Faculty of Humanities VCU tau hais. "Kev hloov pauv catalytic ntawm CO2 mus rau cov tshuaj muaj txiaj ntsig xws li formic acid (HCOOH) yog lwm txoj hauv kev pheej yig los txo cov teebmeem tsis zoo ntawm CO2. Formic acid yog cov kua tshuaj lom tsawg uas yooj yim thauj thiab khaws cia ntawm qhov kub thiab txias. Nws kuj tseem siv tau ua cov tshuaj precursor muaj nqis ntxiv, cov khoom siv khaws cia hydrogen, thiab cov roj fossil yav tom ntej."
Hanna thiab VCU tus kws tshawb fawb txog physicist Dr. Turbasu Sengupta pom tias cov pawg hlau chalcogenides uas khi ua ke tuaj yeem ua cov catalysts rau kev hloov pauv thermochemical ntawm CO2 mus rau formic acid. Lawv cov txiaj ntsig tau piav qhia hauv daim ntawv hu ua "Conversion of CO2 to Formic Acid by Tuning Quantum States in Metal Chalcogenide Clusters" luam tawm hauv Communications Chemistry of Nature Portfolio.
"Peb tau qhia tias, nrog kev sib xyaw ua ke ntawm cov ligands, qhov kev cuam tshuam rau kev hloov CO2 mus rau formic acid tuaj yeem txo qis heev, ua kom nrawm dua ntawm kev tsim cov formic acid," Hanna hais. "Yog li peb yuav hais tias cov catalysts no tuaj yeem ua rau kev tsim cov formic acid yooj yim dua lossis ua tau ntau dua. Kev siv cov pawg loj dua nrog ntau qhov chaw khi ligand lossis los ntawm kev txuas cov ligands pub dawb zoo dua yog nyob rau hauv kab nrog peb cov kev txhim kho ntxiv hauv kev hloov pauv formic acid tuaj yeem ua tiav dhau qhov tau pom hauv kev suav lej.
Txoj kev tshawb fawb no ua raws li Hanna txoj haujlwm yav dhau los uas qhia tias qhov kev xaiv zoo ntawm ligand tuaj yeem hloov ib pawg mus rau hauv ib qho superdonor uas pub cov electrons lossis ib qho acceptor uas lees txais cov electrons.
"Tam sim no peb qhia tau tias tib yam kev cuam tshuam muaj peev xwm zoo hauv catalysis raws li cov hlau chalcogenide clusters," Hanna hais. "Lub peev xwm los tsim cov pawg ruaj khov thiab tswj lawv lub peev xwm los pub lossis txais cov electrons qhib qhov chaw tshiab ntawm catalysis, vim tias feem ntau cov tshuaj tiv thaiv catalytic nyob ntawm cov catalysts uas pub lossis txais cov electrons."
Ib tug ntawm cov kws tshawb fawb thawj zaug hauv daim teb no, Dr. Xavier Roy, Tus Kws Pab Tswv Yim Txog Chemistry ntawm Columbia University, yuav mus xyuas VCU thaum Lub Plaub Hlis 7 rau Lub Rooj Sib Tham Txog Lub Caij Nplooj Ntoos Hlav ntawm Physics Department.
"Peb yuav ua haujlwm nrog nws kom pom tias peb yuav tsim thiab siv cov tshuaj catalyst zoo sib xws li cas siv nws lub chaw kuaj mob," Hanna hais. "Peb twb tau ua haujlwm ze nrog nws pawg, qhov chaw uas lawv tau tsim ib hom khoom siv sib nqus tshiab. Lub sijhawm no nws yuav yog cov tshuaj catalyst."
Sau npe rau VCU Newsletter ntawm newsletter.vcu.edu thiab tau txais cov dab neeg, cov yeeb yaj kiab, cov duab, cov xov xwm luv luv thiab cov npe ntawm cov xwm txheej hauv koj lub inbox.
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