DataVXACS Applied Materials & InterfacesPaper
journal article·2021-11-17Open access

Covalent Grafting of Ruthenium Complexes on Iron Oxide Nanoparticles: Hybrid Materials for Photocatalytic Water Oxidation

Quyen T. Nguyen, Elodie Rousset, Van T. H. Nguyen, Vincent Colliere, Pierre Lecante, Wantana Klysubun, Karine Philippot, Jérôme Esvan, Marc Respaud, Gilles Lemercier, Phong D. Tran, Catherine Amiens

ACS Applied Materials & Interfaces· Volume 13· Issue 45
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Source abstract

Abstract

The present environmental crisis prompts the search for renewable energy sources such as solar-driven production of hydrogen from water. Herein, we report an efficient hybrid photocatalyst for water oxidation, consisting of a ruthenium polypyridyl complex covalently grafted on core/shell Fe@FeOx nanoparticles via a phosphonic acid group. The photoelectrochemical measurements were performed under 1 sun illumination in 1 M KOH. The photocurrent density of this hybrid photoanode reached 20 μA/cm2 (applied potential of +1.0 V vs reversible hydrogen electrode), corresponding to a turnover frequency of 0.02 s–1. This performance represents a 9-fold enhancement of that achieved with a mixture of Fe@FeOx nanoparticles and a linker-free ruthenium polypyridyl photosensitizer. This increase in performance could be attributed to a more efficient electron transfer between the ruthenium photosensitizer and the Fe@FeOx catalyst as a consequence of the covalent link between these two species through the phosphonate pendant group.
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Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Advanced Photocatalysis Techniques · Electrocatalysts for Energy Conversion · TiO2 Photocatalysis and Solar Cells

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

Affiliations

CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France

Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France

University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, 100000 Hanoi, Vietnam

University of Reims Champagne-Ardenne, ICMR, UMR CNRS, 7312 Moulin de la House, BP 1039, F-51687 Reims Cedex 2, France

CEMES-CNRS, Université de Toulouse, 29 rue J. Marvig, F-31055 Toulouse, France

Synchrotron Light Research Institute, 111 University Avenue, Muang, 30000 Nakhon Ratchasima, Thailand

CIRIMAT, Université de Toulouse, CNRS-INPT-UPS, 4 Allée Emile Monso, BP 44362, 31030 Toulouse, France

LPCNO, INSA, 135 Avenue de Rangueil, 31077 Toulouse Cedex 4, France

Funding

Centre National de la Recherche Scientifique · Universit?? Toulouse III - Paul Sabatier · Vietnam Academy of Science and Technology

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