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Laser-induced thermal lens study of the role of morphology and hydroxyl group in the evolution of thermal diffusivity of copper oxide
Chinese Physics B ( IF 1.7 ) Pub Date : 2021-08-23 , DOI: 10.1088/1674-1056/abd9b5
Riya Sebastian , M S Swapna , Vimal Raj , S Sankararaman

The paper explores the evolution of thermal behavior of the material by studying the variations in thermal diffusivity using the single beam thermal lens (TL) technique. For this purpose, the decomposition of Cu(OH)2 into CuO is studied in a time range up to 120 h, by subjecting the sample to morphological, structural, and spectroscopic characterizations. The time evolution of thermal diffusivity can be divided into three regions for demonstrating the dynamics of the reaction. When the reaction is complete, the thermal diffusivity is also found to be saturated. In addition to the morphological modifications, from rods to flakes, the variations in the amount of hydroxyl group are attributed to be responsible for the enhancement of base fluid’s thermal diffusivity by 165%. Thus the study unveils the role of hydroxyl groups in the thermal behavior of CuO.



中文翻译:

形貌和羟基在氧化铜热扩散率演变中作用的激光诱导热透镜研究

本文通过使用单光束热透镜 (TL) 技术研究热扩散率的变化来探索材料热行为的演变。为此,Cu(OH) 2的分解通过对样品进行形态、结构和光谱表征,在长达 120 小时的时间范围内研究进入 CuO 的过程。热扩散率的时间演变可分为三个区域以展示反应动力学。当反应完成时,也发现热扩散率饱和。除了从棒状到片状的形态变化外,羟基数量的变化也是导致基液热扩散率提高 165% 的原因。因此,该研究揭示了羟基在 CuO 热行为中的作用。

更新日期:2021-08-23
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