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- W2783409471 abstract "Abstract Si nanopowder is fabricated using the simple beads milling method. Fabricated Si nanopowder reacts with water in the neutral pH region between 7 and 9 to generate hydrogen. The hydrogen generation rate greatly increases with pH, while pH does not change after the hydrogen generation reaction. In the case of the reactions of Si nanopowder with strong alkaline solutions ( eg pH13.9), 1600 mL hydrogen is generated from 1 g Si nanopowder in a short time ( eg 15 min). When Si nanopowder is etched with HF solutions and immersed in ethanol, green photoluminescence (PL) is observed, and it is attributed to band-to-band transition of Si nanopowder. The Si nanopowder without HF etching in hexane shows blue PL. The PL spectra possess peaked structure, and it is attributed to vibronic bands of 9,10-dimethylantracene (DMA) in hexane solutions. The PL intensity is increased by more than 3,000 times by adsorption of DMA on Si nanopowder." @default.
- W2783409471 created "2018-01-26" @default.
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- W2783409471 date "2017-12-01" @default.
- W2783409471 modified "2023-10-11" @default.
- W2783409471 title "Fabrication of Si nanopowder and application to hydrogen generation and photoluminescent material" @default.
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- W2783409471 doi "https://doi.org/10.1515/jee-2017-0050" @default.
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