Hydrogen Adsorption Studies Using Surface Acoustic Waves on Nanoparticles.

Phillips, A. B. ; Myneni, G. ; Shivaram, B. S.

Technical Information Center Oak Ridge Tennessee

关键词: Hydrogen adsorption;    Quartz crystal;    Acoustics;    Deposition;    Lasers;   

RP-ID  :  DE2006876016

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Vanadium nanoparticles, on the order of 20 nm, were deposited on a quartz crystal surface acoustic wave resonator (SAW) using a Nd:YAG pulsed laser deposition system. Due to the high Q and resonant frequency of the SAW, mass changes on the order of 0.1 nanogram can be quantitatively measured. Roughly 60 nanogram of V was deposited on the SAW for these experiments. The SAW was then moved into a hydrogen high pressure cell.At room temperature and 1 atmosphere of hydrogen pressure, 1 wt% H, or H/V (approx) 0.5 (atomic ratio) absorption was measured.