Ing German research team ginawa yang bimetallic two-dimensional supercrystals na ating masanting a catalytic properties. Malyari lang gamitan ba lang gawang hydrogen kapamilatan ning pamaglaso king formic acid, a maki tala a resulta.
Deng siyentipiku a panimunan ning Ludwig Maximilian University of Munich (LMU Munich) keng Germany ginawa lang photocatalytic technology para keng pamaglalang hydrogen base keng plasma bimetallic two-dimensional supercrystals.
Ding talapanaliksik tinipun do reng plasmonic a istruktura kapamilatan ning pamisanmetung da reng indibidwal a gintung nanoparticles (AuNPs) ampo reng platinum nanoparticles (PtNPs).
Ing talapanaliksik a i Emiliano Cortes sinabi na: "Ing panga-ayus da reng gintung nanoparticles epektibo ya keng pamag-focus kareng incident light ampo pamag-generate kareng masikan a local electric fields, a awsan dang hot spots, a bubuu pilatan da reng gintung particles."
Ing mipanukalang sistemang configuration, ing akakit a sulu makipag-ugnayan yang masikan kareng electron keng metal at gagawan na lang mag-vibrate resonantly, a sangkan nung bakit deng electron misasanmetung lang mabilis a kikimut ibat keng metung a gilid ning nanoparticle papunta keng aliwang gilid. Iti gagawang malating magnet a awsan dang dipole moment deng ekspertu.
Iti ing produktu ning sukad ning karga ampo ing distansya pilatan da reng sentru da reng positibo ampong negatibung karga. Nung makanyan ing malilyari, deng nanoparticles makakwa lang mas dakal a aslag ning aldo at gawan deng sobrang energetic a electron. Sasaup lang magkontrol kareng chemical reactions.
Ing komunidad ning akademiku sinubukan ne ing epektibidad ning plasmonic bimetallic 2D supercrystals keng pamaglaso ning formic acid.
"Ing probe reaction mepili ya uling ing gintu mas ditak ya reactive kesa keng platinum ampo uling carbon-neutral yang H2 carrier," sinabi da.
"Ing experimentally enhanced performance ning platinum lalam ning sulu magpasyag na ing pamiugnayan ning incident light keng gold array magresulta ya keng pamaglalang ning platinum lalam ning boltahe," ngara. "Tutu, nung ing formic acid gamitan ya bilang H2 carrier, ing AuPt supercrystals ing pekamasanting a plasma performance."
Ing kristal pepakit na ing H2 production rate a 139 mmol balang gramu ning catalyst balang oras. Ing grupu da reng talapanaliksik sinabi na ing buri ng sabyan na ing photocatalytic material ngeni tatalan yang world record para keng pamaglalang hydrogen kapamilatan ning pamag-dehydrogenate formic acid lalam ning impluwensya ning akakit a sala ampo solar radiation.
Deng siyentipiku magpropose lang bayung solusyun keng papel a "Plasmonic bimetallic 2D supercrystals para keng hydrogen generation," bayu-bayu pa mu mibulalag keng journal a Nature Catalice. Ing grupu kayabe la reng talapanaliksik ibat keng Free University of Berlin, ing University of Hamburg ampo ing University of Potsdam.
“Kapamilatan ning pamisanmetung da reng plasmon ampong catalytic metals, susulung mi ing panyulung da reng masikan a photocatalysts para kareng aplikasyun king industriya. Iti metung yang bayung paralan ning pamangamit king aslag ning aldo at atin ya namang potensyal para kareng aliwang reaksyun, antimo ing pamagbayu king carbon dioxide king kapakibatan a sangkap,” sinabi nang Cole Thes. .
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