German nhwehwɛmu kuw bi ayɛ supercrystals a ɛwɔ afã abien a ɛyɛ dade abien a ɛwɔ tumi a ɛkyɛn so a ɛma nneɛma yɛ kɛse. Wobetumi de ayɛ hydrogen denam formic acid a wɔporɔw so, na nea efi mu ba a ɛsen biara.
Nyansahufo a Ludwig Maximilian Sukuupɔn a ɛwɔ Munich (LMU Munich) a ɛwɔ Germany di wɔn anim ayɛ mfiridwuma bi a ɛma hann yɛ hyew a wɔde yɛ hydrogen a egyina plasma bimetallic supercrystals a ɛwɔ afã abien so.
Nhwehwɛmufo no boaboaa plasmonic nhyehyɛe ahorow ano denam sika kɔkɔɔ nanoparticles ankorankoro (AuNPs) ne platinum nanoparticles (PtNPs) a wɔde kaa ho no so.
Nhwehwɛmufo Emiliano Cortes kae sɛ: “Nhyehyɛe a wɔde sika kɔkɔɔ nanoparticles yɛ no tu mpɔn kɛse wɔ hann a ɛba no a wɔde si baabiara na ɛma anyinam ahoɔden a ano yɛ den a ɛwɔ mpɔtam hɔ, nea wɔfrɛ no mmeae a ɛyɛ hyew, a ɛba sika kɔkɔɔ no ntam no mu.”
Wɔ nhyehyɛe nhyehyɛe a wɔahyɛ ho nyansa no mu no, hann a wotumi hu ne ɛlɛtrɔnik a ɛwɔ dade no mu no di nkitaho denneennen na ɛma ɛwosow denneennen, na ɛma ɛlɛtrɔnik no bom tu ntɛmntɛm fi nanoparticle no fã biako kɔ foforo. Eyi ma magnet ketewaa bi a abenfo frɛ no dipole moment ba.
Ɛyɛ charge no kɛse ne kwan a ɛda charge pa ne negative mfinimfini ntam no aba. Sɛ eyi ba a, nanoparticles no kyere owia hann pii na ɛdan no ɛlɛtrɔnik a ahoɔden wom kɛse. Wɔboa ma wɔhyɛ nnuru a ɛyɛ adwuma no so.
Nhomasua kuw no asɔ sɛnea plasmonic bimetallic 2D supercrystals tumi yɛ adwuma yiye wɔ formic acid a ɛporɔw mu no ahwɛ.
Wɔkae sɛ: “Wɔpaw probe reaction no efisɛ sika kɔkɔɔ ntumi nyɛ adwuma pii te sɛ platinum na esiane sɛ ɛyɛ carbon-neutral H2 carrier nti.”
Wɔkae sɛ: “Sɛnea platinum yɛ adwuma yiye wɔ hann ase wɔ sɔhwɛ mu no kyerɛ sɛ hann a ɛba no ne sika kɔkɔɔ a wɔahyehyɛ no di nkitaho no ma platinum ba wɔ ahoɔden ase.” “Nokwarem no, sɛ wɔde formic acid di dwuma sɛ H2 soafo a, ɛte sɛ nea AuPt supercrystals no tumi yɛ adwuma yiye wɔ plasma mu.”
Crystal no kyerɛɛ H2 a wɔyɛ no 139 mmol wɔ catalyst gram biara mu dɔnhwerew biara. Nhwehwɛmu kuw no kae sɛ eyi kyerɛ sɛ mprempren ade a ɛma photocatalytic no kura wiase kyerɛwtohɔ a ɛfa hydrogen a ɛyɛ denam formic acid a ɛma nsu fi mu wɔ hann a wotumi hu ne owia hann nkɛntɛnso ase no so.
Nyansahufo no de ano aduru foforo ho nyansahyɛ ma wɔ krataa a wɔato din “Plasmonic bimetallic 2D supercrystals for hydrogen generation,” a wotintimii nnansa yi wɔ Nature Catalice nsɛmma nhoma mu no mu. Nhwehwɛmufo a wofi Free University of Berlin, Hamburg Sukuupɔn ne Potsdam Sukuupɔn mu ka kuw no ho.
Cole Thes kae sɛ: “Ɛdenam plasmon ne dade a ɛma nneɛma yɛ kɛse a yɛde bɛka abom so no, yɛrema hann a ɛma hann a ano yɛ den a wɔde yɛ adwuma wɔ mfiridwuma mu no anya nkɔso. Eyi yɛ ɔkwan foforo a wɔfa so de owia hann di dwuma na ɛsan nso tumi yɛ nneɛma afoforo te sɛ carbon dioxide a wɔdannan no nneɛma a mfaso wɔ so.” .
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