Long-term investigation of the photocatalytic hydrogen production on platinized TiO₂

An isotopic study

authored by

T.A. Kandiel, I. Ivanova, D.W. Bahnemann

Abstract

Long-term investigations of the photocatalytic hydrogen production on platinized TiO

₂ photocatalysts have been carried out employing different solutions of (deuterated) water and (deuterated) methanol. The results indicate that methanol acts as a sacrificial reagent, i.e., as an "electron donor" and that the amount of evolved molecular hydrogen is equivalent to the amount of H

₂ expected from the complete reforming of methanol or even less depending on the used photocatalyst. No evidence for photocatalytic water splitting is observed even in the presence of very low methanol concentrations, i.e., no molecular oxygen has been detected. Based upon the isotopic labelling studies it was confirmed that H

₂ is mainly produced by the reduction of protons originating from water. This journal is

Organisation(s)

Institute of Technical Chemistry

Type

Article

Journal

Energy and Environmental Science

Volume

7

Pages

1420-1425

No. of pages

6

ISSN

1754-5692

Publication date

04.2014

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Environmental Chemistry, Renewable Energy, Sustainability and the Environment, Nuclear Energy and Engineering, Pollution

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1039/c3ee41511b (Access: Unknown)