Shape-controllable synthesis of GdVO4 photocatalysts and their tunable properties in photocatalytic hydrogen generation

Paweł Mazierski , Jakub Sowik , Magdalena Miodyńska , Grzegorz Trykowski , Alicja Mikołajczyk , Tomasz Klimczuk , Wojciech Lisowski , Joanna Nadolna , Adriana Zaleska-Medynska


Novel visible light responsive materials for water splitting are essential for the efficient conversion of solar energy into hydrogen bond energy. Among other semiconductors, gadolinium orthovanadate has appropriate conduction and valence band edges positioned to split water molecules and a narrow band gap that allows the use of visible light for hydrogen generation. Thus, we present here that hydrogen evolution under visible light (λ > 420 nm) could be accomplished using hierarchical 3D GdVO4 particles, obtained by a simple, one pot hydrothermal synthesis. We found that applying various reaction components, such as EDTA-Na2 and EDTA, and adjusting the pH of the solution allow one to tune the shape of GdVO4 (such as short nanowires, long nanowires, short nanorods, long nanorods, nanoparticles and spheres – all having a tetragonal crystal structure) as well as optical and photocatalytic properties. The highest ability to photocatalytically split methanol solution into hydrogen under UV-Vis irradiation was detected for the long nanowire sample (42 μmol h−1), having almost 11 times higher efficiency in comparison with the weakest sample – short nanowires. In addition, GdVO4 spheres generated H2 more than 2 times (5.75 μmol h−1) in comparison with the short nanorod sample (2.5 μmol h−1) under visible light excitation. Photostable in three-hour work cycles, long nanowires and spheres were even able to generate hydrogen from pure water, reaching values of 17 and 3 μmol under UV-Vis and Vis light, respectively.
Author Paweł Mazierski (FCh / DET / LPh)
Paweł Mazierski ,,
- Laboratory of Photocatalysis
, Jakub Sowik (FCh / DET / LPh)
Jakub Sowik,,
- Laboratory of Photocatalysis
, Magdalena Miodyńska (FCh / DET / LPh)
Magdalena Miodyńska,,
- Laboratory of Photocatalysis
, Grzegorz Trykowski
Grzegorz Trykowski,,
, Alicja Mikołajczyk (FCh / DET / LPh)
Alicja Mikołajczyk,,
- Laboratory of Photocatalysis
, Tomasz Klimczuk
Tomasz Klimczuk,,
, Wojciech Lisowski
Wojciech Lisowski,,
, Joanna Nadolna (FCh / DET / LPh)
Joanna Nadolna,,
- Laboratory of Photocatalysis
, Adriana Zaleska-Medynska (FCh / DET / LPh)
Adriana Zaleska-Medynska,,
- Laboratory of Photocatalysis
Journal seriesDalton Transactions: the international journal for inorganic, organometallic and bioinorganic chemistry , ISSN 1477-9226, (A 40 pkt)
Issue year2019
Publication size in sheets0.5
Languageen angielski
Score (nominal)40
ScoreMinisterial score = 40.0, 28-02-2019, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 28-02-2019, ArticleFromJournal
Publication indicators WoS Impact Factor: 2017 = 4.099 (2) - 2017=3.872 (5)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.