Fabrication of photocatalytically active vanadium oxide nanostructures via plasma route
Fabrication of photocatalytically active vanadium oxide nanostructures via plasma route
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DOI：
10.1088/1361-6463/aabe44
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发表时间：
2018-04
期刊：
影响因子：
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通讯作者：
S. Kajita;Tomoko Yoshida;N. Ohno;Y. Ichino;N. Yoshida
中科院分区：
文献类型：
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作者：
S. Kajita;Tomoko Yoshida;N. Ohno;Y. Ichino;N. Yoshida
等离子体辐照用于制造具有潜在商业和工业应用的纳米结构氧化钒。伴随着氦纳米气泡的生长，在纳米和微米尺度上引发了形态变化。表面生长出微米尺寸的柱体、立方体纳米结构和模糊的纤维状纳米结构；揭示了这些形态变化的入射离子能量和表面温度的必要条件。利用甲醇水溶液的光催化反应对制备的样品进行制氢实验。经等离子体辐照的纳米结构样品在空气气氛中被氧化，证实了氢气产量的增加。光催化惰性氧化钒在通过氦等离子体辐照表面纳米结构化后表现出高光催化活性。
Plasma irradiation was used to create nanostructured vanadium oxide with potential commercial and industrial applications. Morphology changes were induced at the nano- and micro-meter scale, accompanied by the growth of helium nanobubbles. Micrometer-sized pillars, cube-shaped nanostructures, and fuzzy fiberform nanostructures were grown on the surface; the necessary conditions in terms of the incident ion energy and the surface temperature for those morphology changes were revealed. Hydrogen production experiments using a photocatalytic reaction with aqueous methanol solution were conducted on the fabricated samples. Enhanced H2 production was confirmed with the plasma irradiated nanostructured sample that had been oxidized in air atmosphere. Photocatalytically inactive vanadium oxide exhibited a high photocatalytic activity after nanostructurization of the surface by helium plasma irradiation.