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Ultrathin tungsten oxide nanowires: oleylamine assisted nonhydrolytic growth, oxygen vacancies and good photocatalytic properties

机译:超薄氧化钨纳米线:油胺辅助的非水解生长,氧空位和良好的光催化性能

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摘要

Ultrathin tungsten oxide nanowires with diameter of around 1.1 nm have been fabricated through a simple oleylamine (OA) assisted nonhydrolytic process. In the process, the amount of OA, reaction temperature and time impacted on controlling the formation of tungsten oxide ultrathin nanowires. At high W/OA molar ratios (>1:1), oriented attachment of OA molecules resulted in the preferential growth of nanowires along the [001] direction. At low W/OA molar ratios, small nanoparticles self-assembled into ultrathin nanowires. The ultrathin tungsten oxide nanowires exhibited a high photocatalytic activity for the degradation of Rhodamine B under visible light, likely due to their enhanced visible-light absorption and the presence of oxygen vacancies.
机译:通过简单的油胺(OA)辅助的非水解过程,已经制造了直径约为1.1 nm的超细氧化钨纳米线。在此过程中,OA的量,反应温度和时间影响着控制氧化钨超薄纳米线的形成。在高W / OA摩尔比(> 1:1)下,OA分子的定向附着导致纳米线沿[001]方向优先生长。在低的W / OA摩尔比下,小的纳米颗粒会自组装成超薄纳米线。超细氧化钨纳米线对可见光下若丹明B的降解具有很高的光催化活性,这可能是由于它们增强了可见光吸收和氧空位的存在。

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