Isotopic Substitution to Unravel the Mechanisms of Photocatalytic Hydrogen Production

authored by

Mariano Curti, Yamen Alsalka, Osama Al-Madanat, Detlef W. Bahnemann

Abstract

Understanding the mechanisms that underlie photocatalytic hydrogen evolution requires the combination of different approaches. In this chapter, we delve into isotopic substitution and labeling as one of such approaches. It allows to pinpoint the route of individual atoms (e.g. O in TiO 2 and their incorporation into CO 2 ), to evaluate rate-determining steps in reaction mechanisms (and identify bottlenecks), and to apply techniques that would otherwise be unusable (e.g. 17 O electron spin resonance). We present a set of interesting literature examples in which the labeling was performed either in the material itself, in the solvent, or in the substrate molecules. It is our hope that this chapter will inspire researchers to find new applications of isotopic substitution and that it will bring this powerful tool to more widespread use.

Organisation(s)

Institute of Technical Chemistry

External Organisation(s)

ICIQ - Institute of Chemical Research of Catalonia
Institute for Nanophotonics Göttingen e.V. (IFNANO)
University of Mutah
Saint Petersburg State University

Type

Contribution to book/anthology

Pages

35-61

No. of pages

27

Publication date

30.05.2023

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Chemistry(all), Chemical Engineering(all)

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1002/9783527835423.ch3 (Access: Closed)