Raja Mogan, T., Zhang, J., Ng, L. S., Boong, S. K., Chong, C., Lee, J., Li, H., & Lee, H. K. (2024). Harmonizing Plasmonic and Photonic Effects to Boost Photocatalytic H2 Production over 550 mmol ⋅ h−1 ⋅ gcat−1. Angewandte Chemie International Edition, 63(16). Portico. https://doi.org/10.1002/anie.202401277
Abstract:
AbstractIntegrating plasmonic nanoparticles with photonic crystals holds immense potential to enhance green hydrogen photosynthesis by amplifying localized electromagnetic field through generating surface plasmons and slow photons. Current plasmonic photonic designs primarily employ semiconductor‐based structural backbone deposited with plasmonic nanoparticles. However, the competition between various optical phenomena in these ensembles hinders effective field enhancement rather than facilitating it. This limitation creates a formidable performance bottleneck that retards hydrogen evolution. Herein, we enhance plasmonic catalysis for efficient hydrogen evolution by effectively harmonizing plasmonic and photonic effects. This is achieved by using inert SiO2 opal as a non‐photoabsorbing photonic framework. By aligning the excitation wavelengths of surface plasmons and slow photons, our optimized plasmonic photonic crystals demonstrates a remarkable H2 evolution rate of 560 mmol h−1 gAg−1, surpassing bare plasmonic Ag nanoparticles by >106‐fold and other high‐performance photocatalytic designs by 280‐fold. Mechanistic studies highlight the pivotal role of the non‐photoabsorbing photonic backbone in facilitating effective light confinement through the photonic effect. This in turn boosts the plasmonic field for enhanced photocatalytic H2 evolution, even without needing additional co‐catalysts. Our work offers valuable insights for future design of electromagnetically hot plasmonic catalysts to achieve efficient light‐to‐chemical transformations in diverse energy, chemical, and environmental applications.
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Funding Info:
This research / project is supported by the Agency of Science, Technology and Research, Singapore - AME YIRG
Grant Reference no. : A2084c0158
This research / project is supported by the Ministry of Education, Singapore - AcRF Tier 1
Grant Reference no. : RS13/20
This research / project is supported by the Ministry of Education, Singapore - AcRF Tier 1
Grant Reference no. : RG4/21
This research / project is supported by the National University of Singapore - Center of Hydrogen Innovation
Grant Reference no. : CHI-P2022-05
This research / project is supported by the Nanyang Technological University - Start-Up Grant
Grant Reference no. : N.A
Description:
This is the peer reviewed version of the following article: Raja Mogan, T., Zhang, J., Ng, L. S., Boong, S. K., Chong, C., Lee, J., Li, H., & Lee, H. K. (2024). Harmonizing Plasmonic and Photonic Effects to Boost Photocatalytic H2 Production over 550 mmol ⋅ h−1 ⋅ gcat−1. Angewandte Chemie International Edition, 63(16). Portico. https://doi.org/10.1002/anie.202401277, which has been published in final form at doi.org/10.1002/anie.202401277. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.