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首页> 外文期刊>RSC Advances >Photoresponsive and wetting performances of sheet-like nanostructures of tungsten trioxide thin films grown on wood surfaces
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Photoresponsive and wetting performances of sheet-like nanostructures of tungsten trioxide thin films grown on wood surfaces

机译：在木材表面生长的三氧化钨薄膜的片状纳米结构的光响应性和润湿性能

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Tungsten trioxide films with sheet-like nanostructures were grown on wood surfaces through a simple low-temperature hydrothermal method using ethanol as an inducer. The morphologies, phase structures, compositions, optical properties and wetting behaviors of the WO3-treated wood surfaces were characterized. The ethanol content in the precursor solution played an important role in the morphologies and phase structures. It was observed that the WO3 film based on the wood substrate was composed of 2D nanosheets with an edge length of 580-957 nm and a thickness of about 80 nm and was highly crystallized with a phase-pureness. The UV-vis analysis shows that the sample prepared with the 20% ethanol content responded to ultraviolet radiation of wavelength 270-350 nm very intensively. When the sample was irradiated under UV light (365 nm), there appeared an obvious color difference value (DC). The water contact angle (WCA) measurements demonstrated that the WO3-treated wood surfaces possessed superhydrophilic behavior and then converted to the superhydrophobic property through the octadecyltrichlorosilane (OTS) treatment. The AFM analysis indicated that a change in surface roughness of the film was responsible for photochromic and hydrophobic performances. The obtained wood surfaces exhibited photoresponsive and self-cleaning functions, which have potential applications such as information storage, smart sensors, and anti-fake materials.
机译：通过简单的低温水热法，使用乙醇作为诱导剂，在木材表面上生长具有片状纳米结构的三氧化钨膜。 WO3处理的木材表面的形貌，相结构，组成，光学性能和润湿行为进行了表征。前体溶液中的乙醇含量对形态和相结构起着重要作用。可以观察到，基于木质基材的WO3薄膜由2D纳米片组成，其边缘长度为580-957 nm，厚度约为80 nm，并且高度结晶，具有相纯性。紫外可见分析表明，乙醇含量为20％的样品对波长为270-350 nm的紫外线的响应非常强烈。当样品在365 nm的紫外线下照射时，出现明显的色差值（DC）。水接触角（WCA）测量表明，经WO3处理的木材表面具有超亲水性能，然后通过十八烷基三氯硅烷（OTS）处理转变为超疏水性能。 AFM分析表明，薄膜表面粗糙度的变化是造成光致变色和疏水性能的原因。所获得的木质表面具有光响应性和自清洁功能，具有潜在的应用前景，例如信息存储，智能传感器和防伪材料。

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