Preparation of copper oxide nanoparticles and its application in nanofluid
Preparation of copper oxide nanoparticles and its application in nanofluid
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DOI：
10.1016/j.powtec.2010.11.022
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发表时间：
2011-02-15
影响因子：
5.2
通讯作者：
Tai, Clifford Y.
中科院分区：
文献类型：
--
作者：
Chang, Ming-Hui;Liu, Hwai-Shen;Tai, Clifford Y.
本研究的目的是合成氧化铜纳米颗粒，然后利用旋转盘反应器（SDR）制备氧化铜-水纳米流体。以五水硫酸铜（II）和碳酸钠为原料，采用液-液连续反应法制备了氧化铜前驱体。然后，将前驱体煅烧至500℃，得到氧化铜纳米颗粒。考察了圆盘转速、反应物浓度和液体流速等操作变量对氧化铜纳米颗粒粒径的影响。在较低的反应物浓度和较高的圆盘转速下，得到的氧化铜颗粒较小。在扫描电子显微镜下观察到的氧化铜初级颗粒的尺寸范围在20 ~ 30 nm之间，而由粒度分析仪测定的平均尺寸为40 ~ 50 nm。最后，利用不同的CuO含量和表面活性剂浓度制备了CuO-水纳米流体，以提高其导热性。(C) 2010 Elsevier B.V.版权所有
The aim of this research was to synthesize copper oxide nanoparticles, which were then applied to prepare CuO-water nanofluid, using a spinning disk reactor (SDR). The precursors of copper oxide were first prepared in a continuous mode through a liquid-liquid reaction using copper (II) sulfate pentahydrate and sodium carbonate as reactants. Then, the precursors were calcined up to 500 degrees C to obtain copper oxide nanoparticles. The effects of operating variables, including disk rotation speed, reactant concentration, and liquid flow rate, on the size of the copper oxide nanoparticles were investigated. Smaller copper oxide particles were obtained under lower reactant concentrations and higher disk rotation speeds. The size of the obtained primary particles of copper oxide ranged between 20 and 30 nm observed under a scanning electron microscope as compared to the number mean size of 40-50 nm determined by a particle size analyzer. Finally, a CuO-water nanofluid was prepared for enhancing the thermal conductivity using various CuO contents and surfactant concentrations. (C) 2010 Elsevier B.V. All rights reserved.