Chikwata chekutsvagisa cheGerman chakagadzira ma supercrystals ane mativi maviri ane hunhu hwakanaka hwe catalytic. Anogona kushandiswa kugadzira hydrogen nekuomesa formic acid, uye mhedzisiro yacho haina kureruka.
Masayendisiti anotungamirwa neLudwig Maximilian University of Munich (LMU Munich) muGermany vakagadzira tekinoroji ye photocatalytic yekugadzira hydrogen yakavakirwa pa plasma bimetallic two-dimensional supercrystals.
Vaongorori vakaunganidza maumbirwo eplasmonic nekubatanidza nanoparticles dzegoridhe rega rega (AuNPs) uye nanoparticles dzeplatinum (PtNPs).
Muongorori Emiliano Cortes akati: "Kurongeka kwezvikamu zvidiki zvegoridhe kunoshanda zvikuru pakuisa chiedza chezviitiko uye kugadzira nzvimbo dzakasimba dzemagetsi dzemunharaunda, dzinonzi nzvimbo dzinopisa, dzinoumba pakati pezvikamu zvegoridhe."
Muhurongwa hwacho, chiedza chinooneka chinosangana zvakasimba nemaerekitironi ari musimbi uye chinoita kuti adengenyeke zvine simba, zvichiita kuti maerekitironi afambe pamwe chete nekukurumidza kubva kune rumwe rutivi rwe nanoparticle kuenda kune rumwe. Izvi zvinogadzira magneti diki iyo nyanzvi dzinoidaidza kuti dipole moment.
Izvi zvinokonzerwa nehukuru hwechaji uye daro riri pakati penzvimbo dzechaji dzakanaka nedzisina kunaka. Kana izvi zvikaitika, tunhu tudiki tunobata chiedza chezuva twakawanda tobva twachichinja kuita maerekitironi ane simba guru. Tunobatsira kudzora mashandiro emakemikari.
Veruzhinji vezvedzidzo vakaedza kushanda kweplasmonic bimetallic 2D supercrystals mukuora kweformic acid.
"Kuita kwekuongorora kwakasarudzwa nekuti goridhe harina simba rekuita zvinhu kupfuura platinum uye nekuti inotakura H2 isina kabhoni," vakadaro.
"Kushanda kwakawedzerwa kweplatinum pasi pekuvhenekerwa kunoratidza kuti kudyidzana kwechiedza chezviitiko negoridhe kunokonzera kuumbwa kweplatinum pasi pemagetsi," vakadaro. "Zvechokwadi, kana formic acid ikashandiswa semutakuri weH2, makristalo eAuPt anoita seane mashandiro eplasma akanakisa."
Kristaro iyi yakaratidza huwandu hwekugadzirwa kweH2 hwe139 mmol pagiramu imwe neimwe ye catalyst paawa. Chikwata chevaongorori chakati izvi zvinoreva kuti chinhu chinobatidza manyuchi ikozvino chine rekodhi yepasi rose yekugadzira hydrogen nekubvisa hydrogen mu formic acid pasi pesimba rechiedza chinoonekwa uye mwaranzi yezuva.
Masayendisiti aya anopa mhinduro itsva mupepa rinonzi “Plasmonic bimetallic 2D supercrystals for hydrogen generation,” rakaburitswa munguva pfupi yapfuura mumagazini inonzi Nature Catalice. Chikwata ichi chinosanganisira vaongorori vanobva kuFree University of Berlin, University of Hamburg neYunivhesiti yePotsdam.
"Nekubatanidza maplasmon nesimbi dzinobatsira, tiri kusimudzira kugadzirwa kwemaphotocatalyst ane simba ekushandiswa mumaindasitiri. Iyi inzira itsva yekushandisa chiedza chezuva uye ine mukana wekuita zvimwe zvinhu, zvakaita sekushandura kabhoni dhayokisaidhi kuita zvinhu zvinobatsira," akadaro Cole Thes.
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