Abashakashatsi ba VCU bavumbuye ikintu cy’ingenzi mu guhindura ikirere cya dioxyde de carbone muri aside formique - ubuvumbuzi bushobora gutanga ingamba nshya zo gufata karubone zishobora kugabanuka mu gihe isi iri guhangana n’imihindagurikire y’ikirere. Ni ikintu gishobora kuba ingenzi mu gutuma gaze de carbone ihinduka mu kirere.
“Birazwi ko ukwiyongera kwihuta kw’ibyuka bihumanya ikirere mu kirere n’ingaruka zabyo ku bidukikije ari kimwe mu bibazo bikomeye bihanganye na ikiremwamuntu muri iki gihe,” ibi byavuzwe n’umwanditsi mukuru Dr. Shiv N. Khanna, Porofeseri w’Umuryango w’Ubumwe bw’Ibihugu mu ishami rya fiziki mu ishami ry’ubumenyi bw’abantu VCU. “Guhindura CO2 mu binyabutabire by’ingirakamaro nka aside formike (HCOOH) ni ubundi buryo buhendutse bwo kugabanya ingaruka mbi za CO2. Aside formike ni amazi afite uburozi buke kandi yoroshye gutwara no kubika mu bushyuhe bw’ikirere. Ishobora kandi gukoreshwa nk’ikintu cyongera agaciro k’ibinyabutabire, ububiko bwa hydrogen, ndetse n’ikintu gishobora gusimbura ibikomoka ku bimera mu gihe kizaza.”
Hanna na Dr. Turbasu Sengupta, umuhanga mu bya fiziki mu bya siyansi ya VCU, basanze amatsinda ya chalcogenides y’ibyuma ashobora gukora nk’ibitera imbaraga mu guhindura CO2 muri aside formike. Ibisubizo byabo byasobanuwe mu nyandiko yise “Guhindura CO2 muri aside formike binyuze mu guhindura imiterere ya Quantum muri Clusters za Chalcogenide z’ibyuma” yasohotse mu kinyamakuru Communications Chemistry of Nature Portfolio.
Hanna yagize ati: “Twagaragaje ko, hamwe n’uburyo bukwiye bwo guhuza ligande, imbogamizi yo guhindura CO2 muri aside formike ishobora kugabanuka cyane, bikihutisha cyane ikorwa rya aside formike.” Bityo twavuga ko izi catalysts zivugwa ko zishobora gutuma ikorwa rya aside formike ryoroha cyangwa rigashoboka kurushaho. Gukoresha amatsinda manini afite ahantu hanini ho guhuza ligande cyangwa gushyiramo ligande zitanga umusaruro mwiza bihuye n’uburyo twarushijeho kunoza ihinduka rya aside formike bishobora kugerwaho ugereranyije n’ibigaragazwa mu buryo bwo kubara.”
Ubushakashatsi bwibanze ku murimo wa Hanna wabanje werekana ko guhitamo neza ligand bishobora guhindura itsinda ry’abantu rigahinduka superdonor ritanga electron cyangwa acceptor rigakira electron.
Hanna agira ati: “Noneho tugaragaza ko ingaruka zimwe zifite ubushobozi bukomeye mu gukatalisasiyo hashingiwe ku matsinda ya chalcogenide y’icyuma. Ubushobozi bwo gukora amatsinda afatanye neza no kugenzura ubushobozi bwayo bwo gutanga cyangwa kwakira electron bufungura urwego rushya rwa katalisasiyo, kubera ko ibikorwa byinshi bya katalisasiyo bishingiye ku mashini zitanga cyangwa zakira electron.”
Umwe mu bahanga ba mbere mu bya siyansi bakoze ubushakashatsi muri urwo rwego, Dr. Xavier Roy, Porofeseri wungirije wa Chimie muri Kaminuza ya Columbia, azasura VCU ku ya 7 Mata mu nama y’impeshyi y’ishami rya fiziki.
Hanna yagize ati: “Tuzakorana na we kugira ngo turebe uko twakora kandi tugashyira mu bikorwa catalyst isa na yo dukoresheje laboratwari ye y’igerageza. Twamaze gukorana bya hafi n’itsinda rye, aho bakoranye ubwoko bushya bw’ibikoresho bya rukuruzi. Kuri iyi nshuro azaba ari we catalyst.”
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