Dual-plasmonic Au@Cu7S4 yolk@shell nanocrystals for photocatalytic hydrogen production across visible to near infrared spectral region

Chun-Wen Tsao, Sudhakar Narra, Jui-Cheng Kao, Yu-Chang Lin, Chun-Yi Chen, Yu-Cheng Chin, Ze-Jiung Huang, Wei-Hong Huang, Chih-Chia Huang, Chih-Wei Luo, Jyh-Pin Chou, Shigenobu Ogata, Masato Sone, Michael H. Huang, Tso-Fu Mark Chang (), Yu-Chieh Lo (), Yan-Gu Lin (), Eric Wei-Guang Diau () and Yung-Jung Hsu ()
Additional contact information
Chun-Wen Tsao: National Yang Ming Chiao Tung University
Sudhakar Narra: National Yang Ming Chiao Tung University
Jui-Cheng Kao: National Yang Ming Chiao Tung University
Yu-Chang Lin: National Synchrotron Radiation Research Center
Chun-Yi Chen: Tokyo Institute of Technology
Yu-Cheng Chin: National Cheng Kung University
Ze-Jiung Huang: National Cheng Kung University
Wei-Hong Huang: National Yang Ming Chiao Tung University
Chih-Chia Huang: National Cheng Kung University
Chih-Wei Luo: National Synchrotron Radiation Research Center
Jyh-Pin Chou: National Changhua University of Education
Shigenobu Ogata: Osaka University
Masato Sone: Tokyo Institute of Technology
Michael H. Huang: National Tsing Hua University
Tso-Fu Mark Chang: Tokyo Institute of Technology
Yu-Chieh Lo: National Yang Ming Chiao Tung University
Yan-Gu Lin: National Synchrotron Radiation Research Center
Eric Wei-Guang Diau: National Yang Ming Chiao Tung University
Yung-Jung Hsu: National Yang Ming Chiao Tung University

Nature Communications, 2024, vol. 15, issue 1, 1-13

Abstract: Abstract Near infrared energy remains untapped toward the maneuvering of entire solar spectrum harvesting for fulfilling the nuts and bolts of solar hydrogen production. We report the use of Au@Cu7S4 yolk@shell nanocrystals as dual-plasmonic photocatalysts to achieve remarkable hydrogen production under visible and near infrared illumination. Ultrafast spectroscopic data reveal the prevalence of long-lived charge separation states for Au@Cu7S4 under both visible and near infrared excitation. Combined with the advantageous features of yolk@shell nanostructures, Au@Cu7S4 achieves a peak quantum yield of 9.4% at 500 nm and a record-breaking quantum yield of 7.3% at 2200 nm for hydrogen production in the absence of additional co-catalysts. The design of a sustainable visible- and near infrared-responsive photocatalytic system is expected to inspire further widespread applications in solar fuel generation. In this work, the feasibility of exploiting the localized surface plasmon resonance property of self-doped, nonstoichiometric semiconductor nanocrystals for the realization of wide-spectrum-driven photocatalysis is highlighted.

Date: 2024
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DOI: 10.1038/s41467-023-44664-3

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