Silicon Nanowires´ Based Photoanode for Efficient Hydrogen Evolution.

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Silicon Nanowires´ Based Photoanode for Efficient Hydrogen Evolution.

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Silicon Nanowires´ Based Photoanode for Efficient Hydrogen Evolution.

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

International Journal of Hydrogen Energy

ISSN

0360-3199

e-ISSN

—

Svazek periodika

43

Číslo periodika v rámci svazku

39

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

18136-18141

Kód UT WoS článku

000446949400008

EID výsledku v databázi Scopus

2-s2.0-85053545811