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中文摘要：
随着纳米科技的快速发展,半导体纳米材料受到了人们的广泛关注.ZnO是一种重要的禁带宽度达3.37 eV的功能性半导体材料,被广泛应用于光电子器件和传感等方面.纳米ZnO的制备和性能研究已有很多报道.众所周知,材料的性能与其自身形貌和尺寸密切相关,因此在合成ZnO纳米材料时,控制其形貌、尺寸就显得十分重要.热力学性质是纳米材料的固有属性.然而,迄今为止,纳米材料热力学在很多方面的研究还相当不完善,尤其是对纳米材料的熵、焓和吉布斯自由能等热力学函数值的研究报道较少.
英文摘要：
Weed-like ZnO nanostructures with uniformity in size were prepared by inverse microemulsion.The characterization results revealed that each weed consisted of several nanowires which were about 1 μm in length,40 nm in diameter.On the basis of the known standard molar formation enthalpy of the bulk ZnO,the relationship of standard molar formation enthalpy between nano ZnO and bulk ZnO was obtained by designing a thermochemical cycle according to thermodynamic potential function method.Combined with the microcalori-metry,the standard molar formation enthalpy of the as-achieved weed-like ZnO nanostructures at 298.15 K was calculated as（-315.15±4.99） kJ/mol.
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