A Multi-Layer Device for Light-Triggered Hydrogen Production from Alkaline Methanol

Yiou Wang; En Ping Yao; Linzhong Wu; Jochen Feldmann; Jacek K. Stolarczyk

doi:10.1002/anie.202109979

A Multi-Layer Device for Light-Triggered Hydrogen Production from Alkaline Methanol

Yiou Wang^*, En Ping Yao, Linzhong Wu, Jochen Feldmann^*, Jacek K. Stolarczyk^*

^*Corresponding author for this work

Ludwig Maximilian University of Munich

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

9 Citations (Scopus)

Abstract

It usually requires high temperature and high pressure to reform methanol with water to hydrogen with high turnover frequency (TOF). Here we show that hydrogen can be produced from alkaline methanol on a light-triggered multi-layer system with a very high hydrogen evolution rate up to ca. 1 μmol s⁻¹ under the illumination of a standard Pt-decorated carbon nitride. The system can achieve a remarkable TOF up to 1.8×10⁶ moles of hydrogen per mole of Pt per hour under mild conditions. The total turnover number (TTN) of 470 000 measured over 38 hours is among the highest reported. The system does not lead to any CO_x emissions, hence it could feed clean hydrogen to fuel cells. In contrast to a slurry system, the proposed multi-layer system avoids particle aggregation and effectively uses light and Pt active sites. The performance is also attributed to the light-triggered reforming of alkaline methanol. This notable performance is a promising step toward practical light-driven hydrogen generation.

Original language	English
Pages (from-to)	26694-26701
Number of pages	8
Journal	Angewandte Chemie - International Edition
Volume	60
Issue number	51
DOIs	https://doi.org/10.1002/anie.202109979
Publication status	Published - 13 Dec 2021
Externally published	Yes

Keywords

TOF
alkaline
methanol reforming
multi-layer structure
photocatalytic hydrogen production

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/anie.202109979

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title = "A Multi-Layer Device for Light-Triggered Hydrogen Production from Alkaline Methanol",

abstract = "It usually requires high temperature and high pressure to reform methanol with water to hydrogen with high turnover frequency (TOF). Here we show that hydrogen can be produced from alkaline methanol on a light-triggered multi-layer system with a very high hydrogen evolution rate up to ca. 1 μmol s−1 under the illumination of a standard Pt-decorated carbon nitride. The system can achieve a remarkable TOF up to 1.8×106 moles of hydrogen per mole of Pt per hour under mild conditions. The total turnover number (TTN) of 470 000 measured over 38 hours is among the highest reported. The system does not lead to any COx emissions, hence it could feed clean hydrogen to fuel cells. In contrast to a slurry system, the proposed multi-layer system avoids particle aggregation and effectively uses light and Pt active sites. The performance is also attributed to the light-triggered reforming of alkaline methanol. This notable performance is a promising step toward practical light-driven hydrogen generation.",

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note = "Publisher Copyright: {\textcopyright} 2021 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH",

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AU - Wang, Yiou

AU - Yao, En Ping

AU - Wu, Linzhong

AU - Feldmann, Jochen

AU - Stolarczyk, Jacek K.

PY - 2021/12/13

Y1 - 2021/12/13

N2 - It usually requires high temperature and high pressure to reform methanol with water to hydrogen with high turnover frequency (TOF). Here we show that hydrogen can be produced from alkaline methanol on a light-triggered multi-layer system with a very high hydrogen evolution rate up to ca. 1 μmol s−1 under the illumination of a standard Pt-decorated carbon nitride. The system can achieve a remarkable TOF up to 1.8×106 moles of hydrogen per mole of Pt per hour under mild conditions. The total turnover number (TTN) of 470 000 measured over 38 hours is among the highest reported. The system does not lead to any COx emissions, hence it could feed clean hydrogen to fuel cells. In contrast to a slurry system, the proposed multi-layer system avoids particle aggregation and effectively uses light and Pt active sites. The performance is also attributed to the light-triggered reforming of alkaline methanol. This notable performance is a promising step toward practical light-driven hydrogen generation.

AB - It usually requires high temperature and high pressure to reform methanol with water to hydrogen with high turnover frequency (TOF). Here we show that hydrogen can be produced from alkaline methanol on a light-triggered multi-layer system with a very high hydrogen evolution rate up to ca. 1 μmol s−1 under the illumination of a standard Pt-decorated carbon nitride. The system can achieve a remarkable TOF up to 1.8×106 moles of hydrogen per mole of Pt per hour under mild conditions. The total turnover number (TTN) of 470 000 measured over 38 hours is among the highest reported. The system does not lead to any COx emissions, hence it could feed clean hydrogen to fuel cells. In contrast to a slurry system, the proposed multi-layer system avoids particle aggregation and effectively uses light and Pt active sites. The performance is also attributed to the light-triggered reforming of alkaline methanol. This notable performance is a promising step toward practical light-driven hydrogen generation.

KW - TOF

KW - alkaline

KW - methanol reforming

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KW - photocatalytic hydrogen production

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A Multi-Layer Device for Light-Triggered Hydrogen Production from Alkaline Methanol

Abstract

Keywords

UN SDGs

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