Koox cilmi-baaris oo Jarmal ah ayaa soo saartay laba-geesood oo supercrystals ah oo leh sifooyin catalytic oo aad u fiican. Waxaa loo isticmaali karaa in lagu soo saaro haydarojiin iyadoo la kala furfurayo formic acid, natiijooyin la diiwaan galiyay.
Saynisyahanno ay hoggaaminayso Jaamacadda Ludwig Maximilian ee Munich (LMU Munich) ee Jarmalka ayaa sameeyay tiknoolajiyad sawir-qaadis ah oo loogu talagalay soo saarista haydarojiin ku salaysan laba-geesoodka supercrystals ee laba-geesoodka ah.
Cilmi-baarayaashu waxay soo ururiyeen qaab-dhismeedyo balaasmonik ah iyagoo isku daraya nanoparticles dahab ah oo shaqsi ah (AuNPs) iyo nanoparticles platinum (PtNPs).
Cilmi-baare Emiliano Cortes ayaa yiri: "Habaynta nanoparticles-ka dahabka ah aad bay waxtar ugu leedahay diiradda saarista iftiinka dhacdooyinka iyo abuurista goobo koronto oo maxalli ah oo xooggan, waxa loogu yeero dhibco kulul, kuwaas oo ka sameysma walxaha dahabka ah."
Qaabeynta nidaamka la soo jeediyay, iftiinka muuqda wuxuu si aad ah ula falgalaa elektaroonada birta ku jira wuxuuna sababaa inay si gariir leh u gariiraan, taasoo keenta in elektaroonada ay si wadajir ah uga dhaqaaqaan dhinac ka mid ah nanoparticle una dhaqaaqaan dhinaca kale. Tani waxay abuurtaa birlab yar oo khubaradu ugu yeeraan daqiiqad dipole.
Waa natiijada cabbirka dallacaadda iyo masaafada u dhaxaysa xarumaha dallacaadaha togan iyo kuwa taban. Marka ay taasi dhacdo, nanoparticles-ku waxay qabtaan qorraxda badan waxayna u beddelaan elektaroono aad u firfircoon. Waxay gacan ka geystaan ​​​​xakamaynta falcelinta kiimikada.
Bulshada aqoonyahannada ayaa tijaabisay waxtarka plasmonic bimetallic 2D supercrystals ee kala furfurka formic acid.
"Falcelinta baaritaanka waxaa loo doortay sababtoo ah dahabku wuu ka falcelin yar yahay platinum-ka iyo sababtoo ah waa side H2 oo kaarboon-dhexdhexaad ah," ayay yiraahdeen.
"Waxqabadka la xoojiyay ee tijaabada ah ee platinum-ka marka la iftiiminayo wuxuu soo jeedinayaa in isdhexgalka iftiinka shilka iyo safka dahabka uu keeno sameynta platinum-ka marka la danabeeyo," ayay yiraahdeen. "Runtii, marka formic acid loo isticmaalo sida H2 side, AuPt supercrystals waxay u muuqataa inay leeyihiin waxqabadka ugu fiican ee balaasmaha."
Crystal-ku wuxuu muujiyay heerka wax soo saarka H2 oo ah 139 mmol garaamkiiba oo kiciyaha saacaddii. Kooxda cilmi-baarista ayaa sheegtay in tani ay ka dhigan tahay in maaddada sawir-qaadista ay hadda haysato rikoorka adduunka ee soo saarista haydarojiin iyadoo ka takhalusaysa aashitada formic iyadoo la adeegsanayo iftiinka muuqda iyo shucaaca qorraxda.
Saynisyahannadu waxay soo jeediyeen xal cusub oo ku jira warqadda "Plasmonic bimetallic 2D supercrystals ee jiilka hydrogen," oo dhawaan lagu daabacay joornaalka Nature Catalice. Kooxda waxaa ka mid ah cilmi-baarayaal ka socda Jaamacadda Free University of Berlin, Jaamacadda Hamburg iyo Jaamacadda Potsdam.
"Marka la isku daro plasmons iyo biraha katalytic-ga, waxaan horumarinaynaa horumarinta sawir-qaadayaasha awoodda leh ee loogu talagalay codsiyada warshadaha. Tani waa hab cusub oo loo isticmaalo iftiinka qorraxda waxayna sidoo kale leedahay awood ay ku sameeyaan falgallo kale, sida beddelidda kaarboon laba ogsaydh oo loo beddelo walxo waxtar leh," ayuu yiri Cole Thes.
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