Kabunga kabasikuvwuntauzya baku German kakapanga ma supercrystals ajisi zibeela zyobile ajisi nguzu zyakugwasya. Zilakonzya kubelesegwa kupanga haayidirojeni kwiinda mukubola asidi yafoomu, mpawo zilazwidilila loko.
Basayaansi basololelwa aLudwig Maximilian University of Munich (LMU Munich) muGermany bakapanga nzila yakupanga hydrogen kwiinda mukubelesya plasma bimetallic two-dimensional supercrystals.
Basikuvwuntauzya bakabunganya zibeela zya plasmonic kwiinda mukuswaanganya tuniini twangolida (AuNPs) antoomwe atunininiini tua platinum (PtNPs).
Sikuvwuntauzya Emiliano Cortes wakati: "Bubambe bwama nanoparticles aangolida bulagwasya loko mukubikkila maanu kumumuni uuboola mpawo akupanga magesi aanguzu, aayo aaitwa kuti ma hot spots, aayo apanga aakati kagolide."
Mubupange bwanzila bwakayeeyelwa, mumuni uubonwa ulaswaangana changuzu kapati ama electron aali muchibulo mpawo upa kuti azungaane, akupa kuti ma electron azwe kulubazu lumwi lwa nanoparticle kuya kulubazu lumwi. Eezi zipa kuti imagineti nsyoonto eeyo basyaazibwene njobaita kuti dipole moment.
Nchintu chizwa mubupati bwachaaji abulemu buli akati kachaaji zibotu azibi. Eezi nozichitika, ma nanoparticles alajata mumuni mupati wazuba mpawo akusandula kuba ma electron aanguzu loko. Zilagwasya kweendelezya kusanduka kwamakemikalu.
Chiinga chabasyaazibwene chakasunka bubotu bwa plasmonic bimetallic 2D supercrystals mukubola kwa formic acid.
"Inzila yakuvwuntauzya yakasalwa nkaambo ngolide taili kabotu pe mbuli platinum alimwi nkaambo nchintu chinyamuna H2 iitakwe kaboni," mbobakaamba.
"Ikusumpulwa kwakubeleka kwa platinum mumumuni kutondeezya kuti kuswaangana kwamumuni uuboola amulongo wangolida kupa kuti kube platinum mumumuni," mbobakaamba. "Masimpe, aawo asidi yafoomu noibelesyegwa mbuli chintu chakunyamuna H2, ma AuPt ma supercrystals alibonya kuti ngaachita obotu kwiinda mu plasma."
Ibbwe lyakatondezya mweelwe wakupanga H2 wa 139 mmol a gram yomwe ya catalyst muwoola lyomwe. Kabunga kabasikuvwuntauzya kakaamba kuti eezi zyaamba kuti zintu zipa nguzu zyamumuni lino nzezijisi rekhodi yanyika yoonse yakupanga haayidirojeni kwiinda mukugwisya haayidirojeni ya formic acid kakuli mumuni uulibonya amumuni wazuba.
Basayaansi bakapa muzeezo mupya mupepa lyakuti "Plasmonic bimetallic 2D supercrystals for hydrogen generation," lyakasimbwa ino-ino mubbuku lya Nature Catalice. Kabunga aaka kabikkilizya abasikuvwuntauzya kuzwa ku Yunivesiti ya Free yaku Berlin, Yunivesiti yaku Hamburg antoomwe a Yunivesiti yaku Potsdam.
"Kwiinda mukuswaanganya ma plasmons a catalytic metals, tulikuya kunembo mukupanga ma photocatalysts aanguzu zyakubelesya mumafakitali. Eeyi ninzila mpya yakubelesya mumuni wazuba alimwi ilakonzya kuchita zimwi zintu, mbuli kusandula carbon dioxide kuba zintu zigwasya," wakaamba Cole Thes. .
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