Details

Autor(en) / Beteiligte

• Yang, Jing-Liang
• He, Yong-Lin
• Ren, He
• Zhong, Han-Liang
• Lin, Jia-Sheng
• Yang, Wei-Min
• Li, Ming-De
• Yang, Zhi-Lin
• Zhang, Hua
• Tian, Zhong-Qun
• Li, Jian-Feng

Titel

Boosting Photocatalytic Hydrogen Evolution Reaction Using Dual Plasmonic Antennas

Ist Teil von

• ACS catalysis, 2021-05, Vol.11 (9), p.5047-5053

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2021

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Plasmon-mediated photocatalytic water splitting has attracted extensive attention due to its bright future in using visible light, but the enhancement mechanism is still unclear, and the efficiency remains low. Herein, a dual-plasmonic-antenna strategy that allows efficient generation of energetic hot electrons and strong electromagnetic fields simultaneously has been developed to boost the photocatalytic hydrogen evolution reaction (HER). Au@CdS core–shell nanoparticles are assembled on Ag@SiO2 shell-isolated nanoparticles, forming dual-plasmonic-antenna nanocomposites. Transient absorption spectroscopic experiments and electromagnetic field simulations demonstrate that both hot-electron transfer and plasmon-induced resonance energy transfer exist in this system. The Au@CdS antenna can generate energetic hot electrons to trigger the HER, while the Ag@SiO2 antenna produces strong electromagnetic fields to promote the generation and separation of hot carriers, thus significantly improving the HER performance under visible light irradiation. Such a dual-plasmonic-antenna concept overcomes the intrinsic limitation of traditional plasmonic photocatalytic materials and offers unique opportunities to develop efficient photocatalysts.