Abstract
In the present paper, uniformly large-scale wurtzite-structured ZnO nanorod arrays (ZNAs) were deposited onto a wood surface through a one-step solvothermal method. The as-prepared samples were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetry (TG), and differential thermal analysis (DTA). ZNAs with a diameter of approximately 85 nm and a length of approximately 1.5 μm were chemically bonded onto the wood surface through hydrogen bonds. The superamphiphobic performance and ultraviolet resistance were measured and evaluated by water or oil contact angles (WCA or OCA) and roll-off angles, sand abrasion tests and an artificially accelerated ageing test. The results show that the ZNA-treated wood demonstrates a robust superamphiphobic performance under mechanical impact, corrosive liquids, intermittent and transpositional temperatures, and water spray. Additionally, the as-prepared wood sample shows superior ultraviolet resistance.
Highlights
In the present paper, uniformly large-scale wurtzite-structured ZnO nanorod arrays (ZNAs) were deposited onto a wood surface through a one-step solvothermal method
The fine features of the ZNAs were further investigated by the transmission electron microscopy (TEM) technique
The results show that the hydrophilic surface of the pristine wood has been successfully transformed into a superamphiphobic surface after the solvothermal treatment
Summary
Uniformly large-scale wurtzite-structured ZnO nanorod arrays (ZNAs) were deposited onto a wood surface through a one-step solvothermal method. The as-prepared wood sample shows superior ultraviolet resistance. Many different methods for synthesizing ZnO nanorod arrays deposited on wood surfaces have been published, such as hydrothermal synthesis[10], wet chemical approach[9], chemical vapour deposition[11] and liquid-phase deposition[12]. The present work describes the deposition of ZnO nanorod arrays on a wood surface through a simple, one-step solvothermal method. The possible mechanisms of both formation of ZnO nanorod arrays and their deposition on the wood surface through the one-step solvothermal method are discussed. The prepared ZNA-treated wood shows a robust superamphiphobic performance and superior ultraviolet resistance, according to measurements from sand abrasion tests and artificially accelerated ageing tests
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