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Hydrogen storage of ZnO and Mg doped ZnO nanowires

机译：ZnO和Mg掺杂的ZnO纳米线的储氢

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ZnO nanowires without or with Mg doping were produced by thermally oxidizing pure Zn or (Zn + Mg) powders. X-ray diffraction (XRD) patterns indicated that ZnO nanowires with and without Mg doping were crystalline with wurzite structure. The highest hydrogen uptake capability was 2.79 wt percent at room temperature and 860 psi for Mg-doped ZnO nanowires. 70.1 percent of the stored hydrogen can be released at ambient pressure. 2.57 wt percent uptake and 68.3 percent release were measured for ZnO nanowires. Fourier transform infrared spectroscopy (FTIR) showed the formation of O-H bonds, while temperature programmed desorption (TPD) suggested that chemisorbed hydrogen could be released only at 100-250 deg C. The H_2 absorption mechanism on ZnO is discussed.
机译：通过热氧化纯的Zn或（Zn + Mg）粉末，可以制得不掺杂或掺杂镁的ZnO纳米线。 X射线衍射（XRD）图谱表明，掺杂和不掺杂Mg的ZnO纳米线均为具有纤锌矿结构的晶体。掺Mg的ZnO纳米线在室温和860 psi下的最高氢吸收能力为2.79 wt％。在环境压力下可以释放70.1％的氢气。 ZnO纳米线的吸收率为2.57 wt％，释放率为68.3％。傅立叶变换红外光谱（FTIR）显示O-H键的形成，而程序升温脱附（TPD）表明化学吸附的氢只能在100-250℃释放。讨论了ZnO的H_2吸收机理。

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