journal article·2019-12-23Open access

Magnéli Phases Doped with Pt for Photocatalytic Hydrogen Evolution

Ewa Wierzbicka, Maximilian Domaschke, Nikita Denisov, Dominik Fehn, Imgon Hwang, Marlena Kaufmann, Babette Kunstmann, Jochen Schmidt, Karsten Meyer, Wolfgang Peukert, Patrik Schmuki

ACS Applied Energy Materials· Volume 2· Issue 12

Abstract

Defined TiO x suboxides (Magnéli phases) have rarely been investigated in photocatalysis. In the current work we describe a one-step synthesis of Magnéli-containing mixed phase nanoparticles that carry directly integrated minute amounts with a few hundred ppm of Pt. Nanoparticles can act as highly effective photocatalysts, e.g., mixed phase particles of 32% anatase, 11% rutile, and 57% Magnéli phases loaded with 290 ppm of Pt which provide a 50–100 times higher H 2 evolution than plain anatase loaded with a similar amount of Pt. This high photocatalytic efficiency is ascribed to a multijunction of various Magnéli titania species and Pt.
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Research context

OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Electrophoretic Deposition in Materials Science

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science WW-4 LKO, University of Erlangen-Nuremberg Martensstrasse 7, 91058 Erlangen, Germany

Institute of Particle Technology, University of Erlangen-Nuremberg, Cauerstrasse 4, 91058 Erlangen, Germany

Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058 Erlangen, Germany

Department of Chemistry, King Abdulaziz University, Jeddah, 21589, Saudi Arabia

Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University, Slechtitelu 11, 783 71 Olomouc, Czech Republic

Funding

European Regional Development Fund · Ministerstvo ?kolstv?, Ml?de?e a Telov?chovy · Deutsche Forschungsgemeinschaft · H2020 European Research Council

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