纳米氧化锌的标准摩尔生成焓  

Standard Molar Formation Enthalpy for Nano Zinc Oxide

作　　者：范高超[1] 陈洁[1] 黄在银[1,2] 姜俊颖[1] 李艳芬[1] 

机构地区：[1]广西民族大学化学与生态工程学院,南宁530006 [2]广西林产化学品开发与应用自治区重点实验室,南宁530006

出　　处：《无机化学学报》2011年第8期1513-1516,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.20963001);广西自然科学基金(No.0832078;No.0991085)资助项目

摘　　要：采用微乳液-水热辅助法合成了尺寸、形貌均匀的ZnO纳米棒,其长度约400 nm,直径约50 nm。基于将纳米ZnO与块体ZnO的标准摩尔生成焓相关联,依据热力学势函数法设计热化学循环,获得了纳米ZnO与块体ZnO标准摩尔生成焓的关系。结合微量热技术求算出了下所制备的ZnO纳米棒在298.15 K下的标准摩尔生成焓为(-331.70±0.42)kJ.mol-1。ZnO nanorods with uniform size and morphology were prepared by microemulsion-mediated hydrothermal route.The characterization results indicate that the rods are about 400 nm in length and 50 nm in diameter.In order to associate standard molar formation enthalpy of nano ZnO with 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 microcalorimetry,standard molar formation enthalpy of the as-prepared ZnO nanorods at 298.15 K was gained as（-331.70±0.42） kJ·mol-1.

关 键 词：标准摩尔生成焓 微量热技术 纳米ZNO 热力学势函数法 

分 类 号：O642.1[理学—物理化学] O642.3[理学—化学]