Ib pab pawg tshawb fawb German tau tsim cov bimetallic ob-seem supercrystals nrog cov khoom catalytic zoo heev. Lawv tuaj yeem siv los tsim hydrogen los ntawm kev rhuav tshem cov formic acid, nrog cov txiaj ntsig zoo kawg.
Cov kws tshawb fawb uas coj los ntawm Ludwig Maximilian University of Munich (LMU Munich) hauv lub teb chaws Yelemees tau tsim cov thev naus laus zis photocatalytic rau kev tsim hydrogen raws li plasma bimetallic ob-dimensional supercrystals.
Cov kws tshawb nrhiav tau sib sau ua ke cov qauv plasmonic los ntawm kev sib txuas cov nanoparticles kub (AuNPs) thiab platinum nanoparticles (PtNPs).
Tus kws tshawb fawb Emiliano Cortes tau hais tias: "Kev npaj cov nanoparticles kub zoo heev rau kev tsom lub teeb pom kev zoo thiab tsim cov teb hluav taws xob hauv zos, uas hu ua cov chaw kub, uas tsim ntawm cov khoom kub."
Hauv qhov kev teeb tsa system uas tau npaj tseg, lub teeb pom kev sib cuam tshuam nrog cov electrons hauv cov hlau thiab ua rau lawv co resonantly, ua rau cov electrons sib koom ua ke txav mus sai sai los ntawm ib sab ntawm nanoparticle mus rau lwm qhov. Qhov no tsim ib lub hlau nplaum me me uas cov kws tshaj lij hu ua lub sijhawm dipole.
Nws yog qhov khoom ntawm qhov loj ntawm lub zog thiab qhov deb ntawm cov chaw nruab nrab ntawm cov zog zoo thiab tsis zoo. Thaum qhov no tshwm sim, cov nanoparticles ntes tau ntau lub hnub ci thiab hloov nws mus ua cov electrons muaj zog heev. Lawv pab tswj cov tshuaj lom neeg.
Cov zej zog kev kawm tau sim qhov ua tau zoo ntawm plasmonic bimetallic 2D supercrystals hauv kev rhuav tshem cov formic acid.
Lawv hais tias, "Qhov kev tshuaj ntsuam no tau raug xaiv vim tias kub tsis tshua muaj zog npaum li platinum thiab vim nws yog tus nqa H2 uas tsis muaj carbon,"
"Qhov kev ua tau zoo ntawm platinum hauv qab lub teeb pom kev zoo qhia tau hais tias kev sib cuam tshuam ntawm lub teeb pom kev zoo nrog cov khoom kub ua rau muaj platinum hauv qab hluav taws xob," lawv hais. "Qhov tseeb, thaum formic acid siv ua tus neeg nqa H2, AuPt supercrystals zoo li muaj kev ua tau zoo tshaj plaws hauv plasma."
Cov siv lead ua tau pom tias muaj H2 ntau lawm ntawm 139 mmol ib gram ntawm cov tshuaj catalyst ib teev. Pab neeg tshawb fawb tau hais tias qhov no txhais tau tias cov khoom siv photocatalytic tam sim no tuav cov ntaub ntawv thoob ntiaj teb rau kev tsim cov hydrogen los ntawm kev dehydrogenating formic acid nyob rau hauv kev cuam tshuam ntawm lub teeb pom kev zoo thiab lub hnub ci.
Cov kws tshawb fawb tau hais txog ib txoj kev daws teeb meem tshiab hauv daim ntawv "Plasmonic bimetallic 2D supercrystals rau hydrogen generation," nyuam qhuav luam tawm hauv phau ntawv xov xwm Nature Catalice. Pab neeg no suav nrog cov kws tshawb fawb los ntawm Free University of Berlin, University of Hamburg thiab University of Potsdam.
"Los ntawm kev sib txuas cov plasmons thiab cov hlau catalytic, peb tab tom txhim kho kev tsim cov photocatalysts muaj zog rau kev siv hauv kev lag luam. Qhov no yog ib txoj hauv kev tshiab los siv lub hnub ci thiab kuj muaj peev xwm rau lwm yam kev cuam tshuam, xws li hloov cov pa roj carbon dioxide mus rau hauv cov tshuaj muaj txiaj ntsig," Cole Thes hais.
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Thaum koj xa daim foos no, koj pom zoo tias PV Magazine yuav siv koj cov ntaub ntawv los tshaj tawm koj cov lus tawm tswv yim.
Koj cov ntaub ntawv tus kheej yuav raug tshaj tawm lossis xa mus rau lwm tus neeg thib peb tsuas yog rau kev lim dej spam lossis raws li qhov tsim nyog rau kev saib xyuas lub vev xaib. Tsis muaj kev xa mus rau lwm tus neeg thib peb yuav ua tshwj tsis yog tias muaj kev cai lij choj tiv thaiv cov ntaub ntawv lossis tshwj tsis yog PV Magazine raug yuam kom ua li ntawd los ntawm txoj cai.
Koj tuaj yeem thim rov qab qhov kev tso cai no txhua lub sijhawm rau yav tom ntej, uas yog thaum koj cov ntaub ntawv tus kheej yuav raug rho tawm tam sim ntawd. Txwv tsis pub, koj cov ntaub ntawv yuav raug rho tawm yog tias PV Magazine ua tiav koj qhov kev thov lossis lub hom phiaj ntawm kev khaws cov ntaub ntawv tau ua tiav.
Cov cookies hauv lub vev xaib no tau teeb tsa kom "tso cai rau cov cookies" los muab kev paub zoo rau koj hauv kev tshawb nrhiav. Koj pom zoo rau qhov no los ntawm kev txuas ntxiv siv lub xaib no yam tsis hloov koj cov chaw teeb tsa cookie lossis los ntawm kev nyem "Txais" hauv qab no.