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首页> 外文期刊>Nanotechnology >A novel fabrication methodology for sulfur-doped ZnO nanorods as an active photoanode for improved water oxidation in visible-light regime
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A novel fabrication methodology for sulfur-doped ZnO nanorods as an active photoanode for improved water oxidation in visible-light regime

机译：硫掺杂ZnO纳米棒作为有源光电沸秒的新型制造方法，用于改善可见光制造中的水氧化

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Incorporation of foreign moiety in the lattice of semiconductors significantly alters their optoelectronic behavior and opens a plethora of new applications. In this paper, we report the synthesis of sulfur-doped zinc oxide (S-doped ZnO) nanorods by reacting ZnO nanorods with diammonium sulfide in vapor phase. Microscopic investigation revealed that the morphological features, such as, the length (2-4 mu m) and width (100-250 nm) of the original hexagonal ZnO nanorods remained intact post-sulfidation. X-ray photoelectron spectroscopy analysis of the sulfide sample confirmed the incorporation of sulfur into ZnO lattice. The optical measurements suggested the extension of absorption threshold into visible region upon sulfidation. Photoelectrochemical (PEC) activities of pure and S-doped ZnO nanorods were compared for water oxidation in visible light ( lambda> 420 nm), which showed several-fold increment in the performance of S-doped ZnO sample; the observed amelioration in the PEC activity was rationalized in terms of preferred visible light absorption and low resistance of sulfide sample, as evidenced by optical and electrochemical impedance spectroscopy.
机译：在半导体晶格中掺入外部部分显着改变了它们的光电行为，并打开了血清含量的新应用。在本文中，我们通过使ZnO纳米棒与气相中的硫化物反应来报告硫掺杂氧化锌（S掺杂ZnO）纳米棒的合成。显微镜调查显示，原始六边形ZnO纳米棒的长度（2-4μm）和宽度（100-250nm）的形态学特征保持完整后硫化。硫化物样品的X射线光电子能谱分析证实硫磺进入ZnO格子。光学测量表明硫化时将吸收阈值的吸收阈值延伸到可见区域中。比较光电化学（PEC）纯和S掺杂的ZnO纳米棒的活性，用于可见光（Lambda> 420nm）中的水氧化，在S掺杂ZnO样品的性能下显示出几倍的增量;通过光学和电化学阻抗光谱证明，在PEC活性中观察到的PEC活性的改善是合理化的，如硫化物样品的优选的光吸收和低电阻。

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