[25p-12C-1~9] 1.4 Energy conversion, storage, resources and environment

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation AwardEnglish Presentation

[25p-12C-5] Superior efficiency of solar-driven hydrogen evolution by a synergetic hybrid of 1D-Si nanowires/0D-Au nanoparticles/2D-MoS₂ nanofilms

〇(D)ChunYen Chen^1,2, Takuo Tanaka², TaJen Yen¹ (1.National Tsing Hua University, 2.Innovative Photon Manipulation Research Team, RIKEN)

Keywords:

localized surface plasmon resonance,molybdenum disulfide,hydrogen evolution reaction,photocatalytic

The use of semiconductor photocatalysts to harness solar energy is a key research focus. Among these, 2D MoS₂ shows promise for hydrogen evolution reactions. To boost its light absorption, we combined 2D MoS₂ with plasmonic materials and nanowires. Our designed heterostructure—SiNW/AuNP/MoS₂—optimally utilizes visible light frequencies, enhancing solar energy utilization. By creating a reproducible MoS₂ nanofilm containing both 1T and 2H phases via simple pyrolysis, we increased efficiency. The SiNW substrate, trapping light effectively, achieved 95% visible light absorption and facilitated charge separation with MoS₂. This synergy in the 1D-SiNW/0D-AuNP/2D-MoS₂ nanofilms showcased an outstanding hydrogen generation rate of 246 mmol g⁻¹ h⁻¹, marking a significant advancement in solar-driven hydrogen production.