Facet-Control versus Co-Catalyst-Control in Photocatalytic H-2 Evolution from Anatase TiO2 Nanocrystals

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F22%3A73618660" target="_blank" >RIV/61989592:15640/22:73618660 - isvavai.cz</a>

Result on the web

<a href="https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/open.202200010" target="_blank" >https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/open.202200010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/open.202200010" target="_blank" >10.1002/open.202200010</a>

Result language

angličtina

Original language name

Facet-Control versus Co-Catalyst-Control in Photocatalytic H-2 Evolution from Anatase TiO2 Nanocrystals

Original language description

Titanium dioxide (TiO2) and, in particular, its anatase polymorph, is widely studied for photocatalytic H-2 production. In the present work, we examine the importance of reactive facets of anatase crystallites on the photocatalytic H-2 evolution from aqueous methanol solutions. For this, we synthesized anatase TiO2 nanocrystals with a large amount of either {001} facets, that is, nanosheets, or {101} facets, that is, octahedral nanocubes, and examined their photocatalytic H-2 evolution and then repeated this procedure with samples where Pt co-catalyst is present on all facets. Octahedral nanocubes with abundant {101} facets produce &gt;4 times more H-2 than nanosheets enriched in {001} facets if the reaction is carried out under co-catalyst-free conditions. For samples that carry Pt co-catalyst on both {001} and {101} facets, faceting loses entirely its significance. This demonstrates that the beneficial role of faceting, namely the introduction of {101} facets that act as electron transfer mediator is relevant only for co-catalyst-free TiO2 surfaces.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

21001 - Nano-materials (production and properties)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

ChemistryOpen

ISSN

2191-1363

e-ISSN

2191-1363

Volume of the periodical

11

Issue of the periodical within the volume

3

Country of publishing house

DE - GERMANY

Number of pages

6

Pages from-to

"nečíslováno"

UT code for WoS article

000750392800001

EID of the result in the Scopus database

2-s2.0-85124083601