CuO/Mg/fluorocarbon sandwich-structure superhydrophobic nanoenergetic composite with anti-humidity property
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
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Pages (from-to) | 163-170 |
Journal / Publication | Chemical Engineering Journal |
Volume | 266 |
Online published | 29 Dec 2014 |
Publication status | Published - 15 Apr 2015 |
Link(s)
Abstract
Sandwich-structure superhydrophobic CuO/Mg/fluorocarbon nanoenergetic composite is prepared on the silicon substrate. An adhesion layer of Cu2O is sputtered on the clean silicon substrate. Cu thin film is then deposited on it by E-beam evaporation. Nanostructured CuO is formed by thermal oxidation of Cu thin film. Mg and fluorocarbon layers are then deposited sequentially by thermal evaporation and sputtering, respectively. The nanostructured energetic composite is characterized by scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Accelerated aging test is performed in a temperature and humidity chamber (35°C, 95% relative humidity) and the heat-release characteristics are studied in detail by differential scanning calorimetry. It is found that Mg layer obtains the nano-texture from CuO and engenders superhydrophobicity after being coated with a fluorocarbon layer. Both the fluorocarbon coating and the CuO layer react with Mg intermediate layer but in different temperature ranges. Thus, the respective heat release can be adjusted almost independently. Because of the superhydrophobicity, CuO/Mg/fluorocarbon maintains about 82% chemical energy after 240h exposure. The nanoenergetic composite holds more than 50% of the original energy after 6h underwater storage. Superhydrophobic MoO3/Mg/fluorocarbon and MoO3/Al/fluorocarbon are also successfully prepared to prove the generality of this new design concept.
Research Area(s)
- Anti-humidity property, CuO/Mg/fluorocarbon, Nanostructured energetic composite, Superhydrophobic surface, Thermal analysis
Citation Format(s)
CuO/Mg/fluorocarbon sandwich-structure superhydrophobic nanoenergetic composite with anti-humidity property. / Zhou, Xiang; Xu, Daguo; Lu, Jian et al.
In: Chemical Engineering Journal, Vol. 266, 15.04.2015, p. 163-170.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review