Silicon Nanowires´ Based Photoanode for Efficient Hydrogen Evolution.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F18%3A00497723" target="_blank" >RIV/67985858:_____/18:00497723 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.ijhydene.2018.04.244" target="_blank" >http://dx.doi.org/10.1016/j.ijhydene.2018.04.244</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijhydene.2018.04.244" target="_blank" >10.1016/j.ijhydene.2018.04.244</a>

Result language
angličtina
Original language name
Silicon Nanowires´ Based Photoanode for Efficient Hydrogen Evolution.
Original language description
The solar driven photo-electrolysis of water for hydrogen and nanoparticles formation from electrolyte with corresponding metal salts was investigated. The photoanode consisted of a thin layer of silicon nanowires deposited on molybdenum and a platinum wire as the cathode was used. The prepared photo-anodes were stable up to 0.3 V against the saturated Ag/AgCl electrode without any signs of gaseous oxygen evolution. This photo-electrochemical system enhanced the nanoparticle formation during the illumination phase accompanied with lowering the external potential needed. The present results show that the hydrogen in statu nascendii is formed during the illumination of photoanode, which causes the formation of nanoparticles by reduction of metal salts. During the photo drive electrolysis is the hydrogen stored in/on forming nanoparticles. The size of nanoparticles can be determined by time and an external bias value inserted between the working and platinum electrode in a classical three electrode system. It was confirmed that the formation of nanoparticles was limited by diffusional processes of hydrogen in statu nascendii in electrolyte, which is in agreement with literature.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20402 - Chemical process engineering

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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