Carbon Nitride Loaded with an Ultrafine, Monodisperse, Metallic Platinum-Cluster Cocatalyst for the Photocatalytic Hydrogen-Evolution Reaction

Daichi Yazaki; Tokuhisa Kawawaki; Daisuke Hirayama; Masanobu Kawachi; Kosaku Kato; Sota Oguchi; Yuichi Yamaguchi; Soichi Kikkawa; Yoshiya Ueki; Sakiat Hossain; D. J. Osborn; Fumihiko Ozaki; Shunsuke Tanaka; Jun Yoshinobu; Gregory F. Metha; Seiji Yamazoe; Akihiko Kudo; Akira Yamakata; Yuichi Negishi

doi:10.1002/smll.202208287

Carbon Nitride Loaded with an Ultrafine, Monodisperse, Metallic Platinum-Cluster Cocatalyst for the Photocatalytic Hydrogen-Evolution Reaction

Daichi Yazaki, Tokuhisa Kawawaki, Daisuke Hirayama, Masanobu Kawachi, Kosaku Kato, Sota Oguchi, Yuichi Yamaguchi, Soichi Kikkawa, Yoshiya Ueki, Sakiat Hossain, D. J. Osborn, Fumihiko Ozaki, Shunsuke Tanaka, Jun Yoshinobu, Gregory F. Metha, Seiji Yamazoe, Akihiko Kudo, Akira Yamakata, Yuichi Negishi

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

For the realization of a next-generation energy society, further improvement in the activity of water-splitting photocatalysts is essential. Platinum (Pt) is predicted to be the most effective cocatalyst for hydrogen evolution from water. However, when the number of active sites is increased by decreasing the particle size, the Pt cocatalyst is easily oxidized and thereby loses its activity. In this study, a method to load ultrafine, monodisperse, metallic Pt nanoclusters (NCs) on graphitic carbon nitride is developed, which is a promising visible-light-driven photocatalyst. In this photocatalyst, a part of the surface of the Pt NCs is protected by sulfur atoms, preventing oxidation. Consequently, the hydrogen-evolution activity per loading weight of Pt cocatalyst is significantly improved, 53 times, compared with that of a Pt-cocatalyst loaded photocatalyst by the conventional method. The developed method is also effective to enhance the overall water-splitting activity of other advanced photocatalysts such as SrTiO₃ and BaLa₄Ti₄O₁₅.

Original language	English
Article number	2208287
Journal	Small
Volume	19
Issue number	34
DOIs	https://doi.org/10.1002/smll.202208287
Publication status	Published - 23 Aug 2023

Keywords

cocatalysts
hydrogen evolution
metal clusters
photocatalysis
platinum

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Yazaki, D., Kawawaki, T., Hirayama, D., Kawachi, M., Kato, K., Oguchi, S., Yamaguchi, Y., Kikkawa, S., Ueki, Y., Hossain, S., Osborn, D. J., Ozaki, F., Tanaka, S., Yoshinobu, J., Metha, G. F., Yamazoe, S., Kudo, A., Yamakata, A., & Negishi, Y. (2023). Carbon Nitride Loaded with an Ultrafine, Monodisperse, Metallic Platinum-Cluster Cocatalyst for the Photocatalytic Hydrogen-Evolution Reaction. Small, 19(34), Article 2208287. https://doi.org/10.1002/smll.202208287

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title = "Carbon Nitride Loaded with an Ultrafine, Monodisperse, Metallic Platinum-Cluster Cocatalyst for the Photocatalytic Hydrogen-Evolution Reaction",

abstract = "For the realization of a next-generation energy society, further improvement in the activity of water-splitting photocatalysts is essential. Platinum (Pt) is predicted to be the most effective cocatalyst for hydrogen evolution from water. However, when the number of active sites is increased by decreasing the particle size, the Pt cocatalyst is easily oxidized and thereby loses its activity. In this study, a method to load ultrafine, monodisperse, metallic Pt nanoclusters (NCs) on graphitic carbon nitride is developed, which is a promising visible-light-driven photocatalyst. In this photocatalyst, a part of the surface of the Pt NCs is protected by sulfur atoms, preventing oxidation. Consequently, the hydrogen-evolution activity per loading weight of Pt cocatalyst is significantly improved, 53 times, compared with that of a Pt-cocatalyst loaded photocatalyst by the conventional method. The developed method is also effective to enhance the overall water-splitting activity of other advanced photocatalysts such as SrTiO3 and BaLa4Ti4O15.",

keywords = "cocatalysts, hydrogen evolution, metal clusters, photocatalysis, platinum",

author = "Daichi Yazaki and Tokuhisa Kawawaki and Daisuke Hirayama and Masanobu Kawachi and Kosaku Kato and Sota Oguchi and Yuichi Yamaguchi and Soichi Kikkawa and Yoshiya Ueki and Sakiat Hossain and Osborn, {D. J.} and Fumihiko Ozaki and Shunsuke Tanaka and Jun Yoshinobu and Metha, {Gregory F.} and Seiji Yamazoe and Akihiko Kudo and Akira Yamakata and Yuichi Negishi",

note = "Publisher Copyright: {\textcopyright} 2023 The Authors. Small published by Wiley-VCH GmbH.",

year = "2023",

month = aug,

day = "23",

doi = "10.1002/smll.202208287",

language = "English",

volume = "19",

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issn = "1613-6810",

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Yazaki, D, Kawawaki, T, Hirayama, D, Kawachi, M, Kato, K, Oguchi, S, Yamaguchi, Y, Kikkawa, S, Ueki, Y, Hossain, S, Osborn, DJ, Ozaki, F, Tanaka, S, Yoshinobu, J, Metha, GF, Yamazoe, S, Kudo, A, Yamakata, A & Negishi, Y 2023, 'Carbon Nitride Loaded with an Ultrafine, Monodisperse, Metallic Platinum-Cluster Cocatalyst for the Photocatalytic Hydrogen-Evolution Reaction', Small, vol. 19, no. 34, 2208287. https://doi.org/10.1002/smll.202208287

TY - JOUR

T1 - Carbon Nitride Loaded with an Ultrafine, Monodisperse, Metallic Platinum-Cluster Cocatalyst for the Photocatalytic Hydrogen-Evolution Reaction

AU - Yazaki, Daichi

AU - Kawawaki, Tokuhisa

AU - Hirayama, Daisuke

AU - Kawachi, Masanobu

AU - Kato, Kosaku

AU - Oguchi, Sota

AU - Yamaguchi, Yuichi

AU - Kikkawa, Soichi

AU - Ueki, Yoshiya

AU - Hossain, Sakiat

AU - Osborn, D. J.

AU - Ozaki, Fumihiko

AU - Tanaka, Shunsuke

AU - Yoshinobu, Jun

AU - Metha, Gregory F.

AU - Yamazoe, Seiji

AU - Kudo, Akihiko

AU - Yamakata, Akira

AU - Negishi, Yuichi

PY - 2023/8/23

Y1 - 2023/8/23

N2 - For the realization of a next-generation energy society, further improvement in the activity of water-splitting photocatalysts is essential. Platinum (Pt) is predicted to be the most effective cocatalyst for hydrogen evolution from water. However, when the number of active sites is increased by decreasing the particle size, the Pt cocatalyst is easily oxidized and thereby loses its activity. In this study, a method to load ultrafine, monodisperse, metallic Pt nanoclusters (NCs) on graphitic carbon nitride is developed, which is a promising visible-light-driven photocatalyst. In this photocatalyst, a part of the surface of the Pt NCs is protected by sulfur atoms, preventing oxidation. Consequently, the hydrogen-evolution activity per loading weight of Pt cocatalyst is significantly improved, 53 times, compared with that of a Pt-cocatalyst loaded photocatalyst by the conventional method. The developed method is also effective to enhance the overall water-splitting activity of other advanced photocatalysts such as SrTiO3 and BaLa4Ti4O15.

AB - For the realization of a next-generation energy society, further improvement in the activity of water-splitting photocatalysts is essential. Platinum (Pt) is predicted to be the most effective cocatalyst for hydrogen evolution from water. However, when the number of active sites is increased by decreasing the particle size, the Pt cocatalyst is easily oxidized and thereby loses its activity. In this study, a method to load ultrafine, monodisperse, metallic Pt nanoclusters (NCs) on graphitic carbon nitride is developed, which is a promising visible-light-driven photocatalyst. In this photocatalyst, a part of the surface of the Pt NCs is protected by sulfur atoms, preventing oxidation. Consequently, the hydrogen-evolution activity per loading weight of Pt cocatalyst is significantly improved, 53 times, compared with that of a Pt-cocatalyst loaded photocatalyst by the conventional method. The developed method is also effective to enhance the overall water-splitting activity of other advanced photocatalysts such as SrTiO3 and BaLa4Ti4O15.

KW - cocatalysts

KW - hydrogen evolution

KW - metal clusters

KW - photocatalysis

KW - platinum

UR - http://www.scopus.com/inward/record.url?scp=85164361169&partnerID=8YFLogxK

U2 - 10.1002/smll.202208287

DO - 10.1002/smll.202208287

M3 - Article

C2 - 37093189

AN - SCOPUS:85164361169

SN - 1613-6810

VL - 19

JO - Small

JF - Small

IS - 34

M1 - 2208287

ER -

Carbon Nitride Loaded with an Ultrafine, Monodisperse, Metallic Platinum-Cluster Cocatalyst for the Photocatalytic Hydrogen-Evolution Reaction

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Keywords

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