Itsinda ry’abashakashatsi b’Abadage ryakoze supercrystals zifite imiterere ibiri y’ibice bibiri zifite ubushobozi bwiza bwo gukaranga. Zishobora gukoreshwa mu gukora hydrogen binyuze mu kubora aside formike, kandi umusaruro wazo waragaragaye cyane.
Abahanga mu bya siyansi bayobowe na Kaminuza ya Ludwig Maximilian ya Munich (LMU Munich) mu Budage bakoze ikoranabuhanga rya photocatalytic ryo gukora hydrogen hashingiwe ku makristale abiri y’ibice bibiri bya plasma.
Abashakashatsi bakusanyije imiterere ya plasmoni bahuza uduce duto twa zahabu (AuNPs) n'uduce duto twa platine (PtNPs).
Umushakashatsi Emiliano Cortes yagize ati: “Gushyira hamwe uduce duto twa zahabu bigira akamaro cyane mu gushyira urumuri rw’impanuka no gukora amashanyarazi akomeye yo mu gace, ibyo bita ahantu hashyushye, biba hagati y’uduce twa zahabu.”
Mu miterere ya sisitemu yatanzwe, urumuri rugaragara rukorana cyane na electron ziri mu cyuma bigatuma zinyeganyega cyane, bigatuma electron zigenda vuba ziva ku ruhande rumwe rwa nanoparticle zijya ku rundi. Ibi birema magneti nto abahanga bita dipole moment.
Ni umusaruro w'ingano y'umuvuduko n'intera iri hagati y'aho amashanyarazi meza na make ari. Iyo ibi bibaye, utwuma duto dufata urumuri rw'izuba rwinshi tukaruhinduramo electron zikoresha imbaraga nyinshi. Bifasha mu kugenzura imikorere y'ibinyabutabire.
Umuryango w’abahanga wagerageje uburyo plasmonic bimetallic 2D supercrystals zikora mu kubora aside formic.
Bagize bati: “Isuzuma ryakoreshejwe ryatoranyijwe kubera ko zahabu idakora cyane kurusha platine kandi kubera ko ari umuyoboro wa H2 udafite karuboni.”
Bagize bati: “Kuba platine yazamuwe mu buryo bw’igerageza, bigaragaza ko imikoranire y’urumuri rw’ibintu n’urumuri rwa zahabu ituma habaho platine munsi y’amashanyarazi.” “Mu by’ukuri, iyo aside formike ikoreshejwe nk’umuyoboro wa H2, supercrystals za AuPt zisa nkaho zifite imikorere myiza cyane ya plasma.”
Iyi kristu yagaragaje igipimo cya H2 cya mililitiro 139 kuri garama imwe ya katalyst ku isaha. Itsinda ry’ubushakashatsi ryavuze ko ibi bivuze ko igikoresho cya photocatalytic ubu gifite agahigo ku isi mu gukora hydrogen binyuze mu gukuraho aside formic hifashishijwe urumuri rugaragara n’imirasire y’izuba.
Abahanga mu bya siyansi batanze igisubizo gishya mu nyandiko yise “Plasmonic bimetallic 2D supercrystals for hydrogène,” iherutse gusohoka mu kinyamakuru Nature Catalice. Itsinda rigizwe n’abashakashatsi bo muri Kaminuza y’i Berlin yigenga, Kaminuza ya Hamburg na Kaminuza ya Potsdam.
“Mu guhuza plasmones n’ibyuma bihindura imiterere y’ikirere, turimo guteza imbere iterambere rya fotokatalisiti zikomeye zikoreshwa mu nganda. Ubu ni uburyo bushya bwo gukoresha urumuri rw’izuba kandi bufite ubushobozi bwo gukora ibindi bintu, nko guhindura dioxyde de carbone mo ibintu by’ingirakamaro,” ibi byavuzwe na Cole Thes.
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