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Boosting Photoelectrochemical Water Oxidation of Hematite by Surface States Modification

61 Pages Posted: 5 Feb 2019 Sneak Peek Status: Review Complete

See all articles by Peng-Yi Tang

Peng-Yi Tang

Autonomous University of Barcelona - Catalan Institute of Nanoscience and Nanotechnology (ICN2); Catalonia Institute for Energy Research (IREC)

Li-Juan Han

Barcelona Institute of Science and Technology (BIST) - Institute of Chemical Research of Catalonia (ICIQ)

Franziska Simone Hegner

Barcelona Institute of Science and Technology (BIST) - Institute of Chemical Research of Catalonia (ICIQ)

Paul Paciok

Forschungszentrum Jülich GmbH - Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons; Forschungszentrum Jülich GmbH - Peter Grünberg Institute

Martí Biset-Peiró

Catalonia Institute for Energy Research (IREC)

Hong-Chu Du

Forschungszentrum Jülich GmbH - Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons; Forschungszentrum Jülich GmbH - Peter Grünberg Institute

Xian-Kui Wei

Forschungszentrum Jülich GmbH - Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons; Forschungszentrum Jülich GmbH - Peter Grünberg Institute

Lei Jin

Forschungszentrum Jülich GmbH - Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons; Forschungszentrum Jülich GmbH - Peter Grünberg Institute

Hai-Bing Xie

Autonomous University of Barcelona - Catalan Institute of Nanoscience and Nanotechnology (ICN2)

Qin Shi

Catalonia Institute for Energy Research (IREC)

Teresa Andreu

Catalonia Institute for Energy Research (IREC)

Mónica Lira-Cantú

Autonomous University of Barcelona - Catalan Institute of Nanoscience and Nanotechnology (ICN2)

Marc Heggen

Forschungszentrum Jülich GmbH - Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons; Forschungszentrum Jülich GmbH - Peter Grünberg Institute

Rafal E. Dunin-Borkowski

Forschungszentrum Jülich GmbH - Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons; Forschungszentrum Jülich GmbH - Peter Grünberg Institute

Núria López

Barcelona Institute of Science and Technology (BIST) - Institute of Chemical Research of Catalonia (ICIQ)

José Ramón Galán-Mascarós

Barcelona Institute of Science and Technology (BIST) - Institute of Chemical Research of Catalonia (ICIQ)

Joan Ramon Morante

Catalonia Institute for Energy Research (IREC)

Jordi Arbiol

Autonomous University of Barcelona - Catalan Institute of Nanoscience and Nanotechnology (ICN2)

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Abstract

State-of-the-art water-oxidation catalysts in acidic electrolyte usually contain expensive noble metals such as ruthenium and iridium. However, they are exceedingly expensive to be implemented broadly in semiconductor photoanodes for affordable photoelectrochemical (PEC) water splitting devices. Here, an Earth-abundant CoFe Prussian blue analogue (CoFe-PBA) is incorporated with core-shell Fe2O3Fe2TiO5 type II heterojunction nanowires as composite photoanodes for PEC water splitting. Those deliver a stable photocurrent of 1.25 mA cm-2 at 1.23 V vs. reversible reference electrode in acidic electrolyte (pH=1). The enhancement arises from the synergic behavior between the successive decoration of the hematite surface with nanolayers of Fe2TiO5 and then, CoFe-PBA. The underlying physical mechanism of performance enhancement through formation of the Fe2O3Fe2TiO5 CoFe-PBA heterostructure reveals that the surface states electronic levels of hematite were modified such that an interfacial charge transfer becomes kinetically favorable. These findings open new pathways for the future design of cheap and efficient hematite-based photoanodes.

Keywords: Photoelectrochemical (PEC) water splitting, hematite, surface states, Fe2TiO5, CoFe Prussian blue analogue, photoanodes, water oxidation, nanowires, acidic electrolyte

Suggested Citation

Tang, Peng-Yi and Han, Li-Juan and Hegner, Franziska Simone and Paciok, Paul and Biset-Peiró, Martí and Du, Hong-Chu and Wei, Xian-Kui and Jin, Lei and Xie, Hai-Bing and Shi, Qin and Andreu, Teresa and Lira-Cantú, Mónica and Heggen, Marc and Dunin-Borkowski, Rafal E. and López, Núria and Galán-Mascarós, José Ramón and Morante, Joan Ramon and Arbiol, Jordi, Boosting Photoelectrochemical Water Oxidation of Hematite by Surface States Modification (February 1, 2019). Available at SSRN: https://ssrn.com/abstract=3327226 or http://dx.doi.org/10.2139/ssrn.3327226
This is a paper under consideration at Cell Press and has not been peer-reviewed.

Peng-Yi Tang

Autonomous University of Barcelona - Catalan Institute of Nanoscience and Nanotechnology (ICN2)

Plaça Cívica
Cerdañola del Valles
Barcelona, Barcelona 08193
Spain

Catalonia Institute for Energy Research (IREC)

Jardins de les Dones de Negre 1
Sant Adrià del Besòs
Barcelona 08930
Spain

Li-Juan Han

Barcelona Institute of Science and Technology (BIST) - Institute of Chemical Research of Catalonia (ICIQ)

Avda. Països Catalans 16
Tarragona, 43007
Spain

Franziska Simone Hegner

Barcelona Institute of Science and Technology (BIST) - Institute of Chemical Research of Catalonia (ICIQ)

Avda. Països Catalans 16
Tarragona, 43007
Spain

Paul Paciok

Forschungszentrum Jülich GmbH - Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons

Jülich, 52428
Germany

Forschungszentrum Jülich GmbH - Peter Grünberg Institute

Jülich, 52428
Germany

Martí Biset-Peiró

Catalonia Institute for Energy Research (IREC)

Jardins de les Dones de Negre 1
Sant Adrià del Besòs
Barcelona 08930
Spain

Hong-Chu Du

Forschungszentrum Jülich GmbH - Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons

Jülich, 52428
Germany

Forschungszentrum Jülich GmbH - Peter Grünberg Institute

Jülich, 52428
Germany

Xian-Kui Wei

Forschungszentrum Jülich GmbH - Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons

Jülich, 52428
Germany

Forschungszentrum Jülich GmbH - Peter Grünberg Institute

Jülich, 52428
Germany

Lei Jin

Forschungszentrum Jülich GmbH - Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons

Jülich, 52428
Germany

Forschungszentrum Jülich GmbH - Peter Grünberg Institute

Jülich, 52428
Germany

Hai-Bing Xie

Autonomous University of Barcelona - Catalan Institute of Nanoscience and Nanotechnology (ICN2)

Plaça Cívica
Cerdañola del Valles
Barcelona, Barcelona 08193
Spain

Qin Shi

Catalonia Institute for Energy Research (IREC)

Jardins de les Dones de Negre 1
Sant Adrià del Besòs
Barcelona 08930
Spain

Teresa Andreu

Catalonia Institute for Energy Research (IREC)

Jardins de les Dones de Negre 1
Sant Adrià del Besòs
Barcelona 08930
Spain

Mónica Lira-Cantú

Autonomous University of Barcelona - Catalan Institute of Nanoscience and Nanotechnology (ICN2)

Plaça Cívica
Cerdañola del Valles
Barcelona, Barcelona 08193
Spain

Marc Heggen

Forschungszentrum Jülich GmbH - Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons

Jülich, 52428
Germany

Forschungszentrum Jülich GmbH - Peter Grünberg Institute

Jülich, 52428
Germany

Rafal E. Dunin-Borkowski

Forschungszentrum Jülich GmbH - Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons

Jülich, 52428
Germany

Forschungszentrum Jülich GmbH - Peter Grünberg Institute

Jülich, 52428
Germany

Núria López

Barcelona Institute of Science and Technology (BIST) - Institute of Chemical Research of Catalonia (ICIQ)

Avda. Països Catalans 16
Tarragona, 43007
Spain

José Ramón Galán-Mascarós

Barcelona Institute of Science and Technology (BIST) - Institute of Chemical Research of Catalonia (ICIQ)

Avda. Països Catalans 16
Tarragona, 43007
Spain

Joan Ramon Morante

Catalonia Institute for Energy Research (IREC)

Jardins de les Dones de Negre 1
Sant Adrià del Besòs
Barcelona 08930
Spain

Jordi Arbiol (Contact Author)

Autonomous University of Barcelona - Catalan Institute of Nanoscience and Nanotechnology (ICN2) ( email )

Plaça Cívica
Cerdañola del Valles
Barcelona, Barcelona 08193
Spain

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