Fabrication of Si nanopowder and application to hydrogen generation and photoluminescent material

• DOI: 10.1515/jee-2017-0050
• Publication Date: 2018-01-06T22:16:20Z
• Authors: Yuki Kobayashi; Kentaro Imamura; Taketoshi Matsumoto; Hikaru Kobayashi
• Keywords: Hexane

Abstract Si nanopowder is fabricated using the simple beads milling method. Fabricated reacts with water in neutral pH region between 7 and 9 to generate hydrogen. The hydrogen generation rate greatly increases pH, while does not change after reaction. In case of reactions strong alkaline solutions ( eg pH13.9), 1600 mL generated from 1 g a short time 15 min). When etched HF immersed ethanol, green photoluminescence (PL) observed, it attributed band-to-band transition nanopowder. without etching hexane shows blue PL. PL spectra possess peaked structure, vibronic bands 9,10-dimethylantracene (DMA) solutions. intensity increased by more than 3,000 times adsorption DMA on