Photoelectrolysis of TiO2 is highly localized and the selectivity is affected by the light

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F22%3A10249944" target="_blank" >RIV/61989100:27240/22:10249944 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S1385894722024895" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1385894722024895</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cej.2022.136995" target="_blank" >10.1016/j.cej.2022.136995</a>

Result language

angličtina

Original language name

Photoelectrolysis of TiO2 is highly localized and the selectivity is affected by the light

Original language description

On the way to sustainable prosperity for future generations, photoelectrochemistry is becoming a key area for energy conversion and the environmentally friendly generation of chemical resources because it combines the advantages of electrochemical and photochemical processes. Highly active catalyst materials with excellent selectivity towards the desired reaction are certainly required for efficient processes. Understanding the underlying processes, including detailed in situ information, facilitates the design and development of catalyst materials. In this work, we utilize the scanning photoelectrochemical microscopy for the spatially resolved in situ investigation of the electrochemical and photoelectrochemical evolution of hydrogen, oxygen, reactive oxygen species, and chlorine for energy conversion. Herein, we demonstrate that the activity and the selectivity of the TiO2 photoelectrocatalyst are highly localized despite their apparently uniform composition based on regular morphological characterization. Furthermore, the results suggest that the illumination dramatically changes the selectivity in electrolysis reactions, which is demonstrated on the competing oxygen- and chlorine- evolution reaction. Consequently, this leads to the critical implication that the activity and selectivity should not be considered uniform per se, especially under the illumination. This implies that light might be used for controlling the selectivity in electrolysis reactions. Such discovery shall dramatically impact the optimization of photoelectrocatalysts in general. (C) 2022 Elsevier B.V.

Czech name

—

Czech description

—

Type

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

CEP classification

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OECD FORD branch

10400 - Chemical sciences

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2022

Confidentiality

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

Name of the periodical

Chemical engineering journal

ISSN

1385-8947

e-ISSN

—

Volume of the periodical

446

Issue of the periodical within the volume

3

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

nestrankovano

UT code for WoS article

000810444800004

EID of the result in the Scopus database

2-s2.0-85131410839