TY - JOUR
T1 - Improvement of Visible-Light H2 Evolution Activity of Pb2Ti2O5.4F1.2 Photocatalyst by Coloading of Rh and Pd Cocatalysts
AU - Aihara, Kenta
AU - Kato, Kosaku
AU - Uchiyama, Tomoki
AU - Yasuda, Shuhei
AU - Yokoi, Toshiyuki
AU - Yamakata, Akira
AU - Uchimoto, Yoshiharu
AU - Maeda, Kazuhiko
N1 - Funding Information:
This work was supported by Grants‐in‐Aid for Scientific Research on the Innovative Area “Mixed Anions” (Project JP16H06441, JP17H05491, and JP19H04708) and “Dynamic Exciton” (Project JP20H05838) by the Japan Society for the Promotion of Science (JSPS). K.M. wishes to acknowledge support from a Bilateral Collaboration (JP120213208) (JSPS).
Publisher Copyright:
© 2022 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH.
PY - 2022/8/1
Y1 - 2022/8/1
N2 - Pb2Ti2O5.4F1.2 modified with various metal cocatalysts was studied as a photocatalyst for visible-light H2 evolution. Although unmodified Pb2Ti2O5.4F1.2 showed negligible activity, modification of its surface with Rh led to the best observed promotional effect among the Pb2Ti2O5.4F1.2 samples modified with a single metal cocatalyst. The H2 evolution activity was further enhanced by coloading with Pd; the Rh−Pd/Pb2Ti2O5.4F1.2 photocatalyst showed 3.2 times greater activity than the previously reported Pt/Pb2Ti2O5.4F1.2. X-ray absorption fine-structure spectroscopy, photoelectrochemical, and transient absorption spectroscopy measurements indicated that the coloaded Rh and Pd species, which were partially alloyed on the Pb2Ti2O5.4F1.2 surface, improved the electron-capturing ability, thereby explaining the high activity of the coloaded Rh−Pd/Pb2Ti2O5.4F1.2 catalyst toward H2 evolution.
AB - Pb2Ti2O5.4F1.2 modified with various metal cocatalysts was studied as a photocatalyst for visible-light H2 evolution. Although unmodified Pb2Ti2O5.4F1.2 showed negligible activity, modification of its surface with Rh led to the best observed promotional effect among the Pb2Ti2O5.4F1.2 samples modified with a single metal cocatalyst. The H2 evolution activity was further enhanced by coloading with Pd; the Rh−Pd/Pb2Ti2O5.4F1.2 photocatalyst showed 3.2 times greater activity than the previously reported Pt/Pb2Ti2O5.4F1.2. X-ray absorption fine-structure spectroscopy, photoelectrochemical, and transient absorption spectroscopy measurements indicated that the coloaded Rh and Pd species, which were partially alloyed on the Pb2Ti2O5.4F1.2 surface, improved the electron-capturing ability, thereby explaining the high activity of the coloaded Rh−Pd/Pb2Ti2O5.4F1.2 catalyst toward H2 evolution.
KW - artificial photosynthesis
KW - heterogeneous photocatalysis
KW - oxyfluoride
KW - solar fuels
KW - water splitting
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U2 - 10.1002/chem.202200875
DO - 10.1002/chem.202200875
M3 - Article
C2 - 35622449
AN - SCOPUS:85131937678
SN - 0947-6539
VL - 28
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 43
M1 - e202200875
ER -
