Dye-sensitization of boron-doped diamond foam: champion photoelectrochemical performance of diamond electrodes under solar light illumination

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F15%3A00447843" target="_blank" >RIV/61388955:_____/15:00447843 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1039/C5RA12413A" target="_blank" >http://dx.doi.org/10.1039/C5RA12413A</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/C5RA12413A" target="_blank" >10.1039/C5RA12413A</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dye-sensitization of boron-doped diamond foam: champion photoelectrochemical performance of diamond electrodes under solar light illumination

Popis výsledku v původním jazyce

Diamond foams composed of hollow spheres of polycrystalline boron-doped diamond are chemically modified with two donor?acceptor type molecular dyes, BT-Rho and CPDT-Fur, and tested as electrode materials for p-type dye-sensitized solar cells with an aqueous electrolyte solution containing methyl viologen as a redox mediator. Reference experiments with flat polycrystalline diamond electrodes evidence full blocking of the methyl viologen redox reaction by these dyes, whereas only partial blocking is observed for the diamond foams. This is ascribed to sp2-carbon impurities in the foam, viz. trans-polyacetylene and graphite-like carbon. Cathodic photocurrents under solar light illumination are about 3 times larger on foam electrodes compared to flat diamond. Long-term (1?2 days) illumination of the sensitized foam electrodes with chopped light at 1 sun intensity causes an increase of the cathodic photocurrent density to ca. 15?22 ?A cm2. These photocurrent densities represent the largest v

Název v anglickém jazyce

Dye-sensitization of boron-doped diamond foam: champion photoelectrochemical performance of diamond electrodes under solar light illumination

Popis výsledku anglicky

Diamond foams composed of hollow spheres of polycrystalline boron-doped diamond are chemically modified with two donor?acceptor type molecular dyes, BT-Rho and CPDT-Fur, and tested as electrode materials for p-type dye-sensitized solar cells with an aqueous electrolyte solution containing methyl viologen as a redox mediator. Reference experiments with flat polycrystalline diamond electrodes evidence full blocking of the methyl viologen redox reaction by these dyes, whereas only partial blocking is observed for the diamond foams. This is ascribed to sp2-carbon impurities in the foam, viz. trans-polyacetylene and graphite-like carbon. Cathodic photocurrents under solar light illumination are about 3 times larger on foam electrodes compared to flat diamond. Long-term (1?2 days) illumination of the sensitized foam electrodes with chopped light at 1 sun intensity causes an increase of the cathodic photocurrent density to ca. 15?22 ?A cm2. These photocurrent densities represent the largest v

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CG - Elektrochemie

OECD FORD obor

—

Projekt

<a href="/cs/project/GA13-31783S" target="_blank" >GA13-31783S: Studium procesu mezifázového přenosu náboje na borem a fosforem dopovaném diamantu v kontaktu s roztokem elektrolytu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

RSC Advances

ISSN

2046-2069

e-ISSN

—

Svazek periodika

5

Číslo periodika v rámci svazku

99

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

81069-81077

Kód UT WoS článku

000362436800024

EID výsledku v databázi Scopus

2-s2.0-84942548963