A rational guide to improve the activity of a hydrogen-evolving polymeric carbon nitride photocatalyst

Kazuhiko Maeda; Tomoharu Maeda; Chomponoot Suppaso; Shunta Nishioka; Yoshinobu Kamakura; Shuhei Yasuda; Toshiyuki Yokoi

doi:10.1039/D3SE00996C

A rational guide to improve the activity of a hydrogen-evolving polymeric carbon nitride photocatalyst†

Kazuhiko Maeda,

*^ab Tomoharu Maeda,‡^a Chomponoot Suppaso,

‡^a Shunta Nishioka,

^a Yoshinobu Kamakura,^a Shuhei Yasuda §^c and Toshiyuki Yokoi^c

Author affiliations

* Corresponding authors

^a Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
E-mail: maedak@chem.titech.ac.jp

^b Living Systems Materialogy (LiSM) Research Group, International Research Frontiers Initiative (IRFI), Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8502, Japan

^c Nanospace Catalysis Unit, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan

Abstract

Photocatalytic H₂ evolution using Pt-loaded mesoporous polymeric carbon nitride (meso-PCN) was studied with respect to light intensity and the hydrogen–deuterium isotope effect, in combination with photoelectrochemical measurements. Although the photocatalytic activity was mainly limited by charge recombination in the meso-PCN, improving the oxidation reaction by photogenerated holes was critical for enhancing the H₂-evolution activity. The finding of this work will be a useful guide to achieve non-sacrificial overall water splitting by PCN photocatalysts.

This article is part of the themed collections: Recent Open Access Articles and Solar Fuels and Chemicals: Photocatalytic Water Splitting and CO2 Reduction

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DOI: https://doi.org/10.1039/D3SE00996C
Article type: Paper
Submitted: 02 ago 2023
Accepted: 20 nov 2023
First published: 21 nov 2023
This article is Open Access

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Sustainable Energy Fuels, 2024,8, 36-42

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A rational guide to improve the activity of a hydrogen-evolving polymeric carbon nitride photocatalyst

K. Maeda, T. Maeda, C. Suppaso, S. Nishioka, Y. Kamakura, S. Yasuda and T. Yokoi, Sustainable Energy Fuels, 2024, 8, 36 DOI: 10.1039/D3SE00996C

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Sustainable Energy & Fuels

A rational guide to improve the activity of a hydrogen-evolving polymeric carbon nitride photocatalyst†

Abstract

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A rational guide to improve the activity of a hydrogen-evolving polymeric carbon nitride photocatalyst

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