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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Controllable Preferential-Etching Synthesis and Photocatalytic Activity of Porous ZnO Nanotubes
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Controllable Preferential-Etching Synthesis and Photocatalytic Activity of Porous ZnO Nanotubes

机译：多孔ZnO纳米管的可控优选腐蚀合成及光催化活性

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摘要

Porous ZnO nanotubes have been synthesized via a facile hydrotherrnal method based on a preferential etching strategy. The nanotubes have a nearly homogeneous size with about 250 run diameter, 40 nm wall thickness, and 500 nm length. Nanoholes with diameters ranging from tens to hundreds of nanometers were created on the side wall of the tubular structure. Formation of the porous ZnO nanotubes resulted from preferential etching along the c axis and relatively slow etching along the radial directions due to the polar feature of the ZnO crystal. Superior photocatalytic activity of the porous ZnO nanotubes in the degradation of methyl orange compared to the other samples has been demonstrated, and the origin is mainly ascribed to the scattered nanoholes on the wall of the porous nanotubes. The influence factors and formation mechanism of the porous ZnO nanotubes were analyzed and discussed.
机译：多孔的ZnO纳米管已经通过基于优先刻蚀策略的简便水热法合成。纳米管具有近似均匀的尺寸，具有约250的游程直径，40nm的壁厚和500nm的长度。在管状结构的侧壁上形成直径范围从几十到几百纳米的纳米孔。由于ZnO晶体的极性特征，多孔ZnO纳米管的形成是由于沿c轴的优先蚀刻和沿径向的相对缓慢的蚀刻。与其他样品相比，已经证明了多孔ZnO纳米管在甲基橙降解方面具有优异的光催化活性，其起源主要归因于多孔纳米管壁上的分散纳米孔。分析并讨论了多孔ZnO纳米管的影响因素和形成机理。

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