| 电化学方法测定纳米材料的热力学函数 |
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| 引用本文： | 王路得,黄在银,范高超,周泽广,谭学才.电化学方法测定纳米材料的热力学函数[J].中国科学:化学,2012(1):47-51. |
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| 作者姓名： | 王路得 黄在银 范高超 周泽广 谭学才 |
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| 作者单位： | [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广西壮族自治区重点实验室,南宁530006 |
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| 基金项目： | 致谢 本工作得到国家自然科学基金（20963001）,广西自然科学基金（0832078,0991085）资助,特此感谢. |
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| 摘 要： | 以纳米铜为例,首次采用电化学方法获取纳米材料的热力学函数.通过电化学沉积法制备了粒子尺寸约80nm的纳米铜电极,测定纳米铜与块体铜电极的电势差,以块体铜的热力学函数值为参考标准,根据纳米铜与块体铜的热力学关系式,求得纳米铜的标准摩尔生成焓、标准摩尔生成吉布斯自由能、标准摩尔熵分别为5.16kJmol-1、0.216kJmol-1、49.75JK-1mol-1,同时,求得纳米铜可逆电池反应的热效应为-4.95kJmol-1.
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| 关 键 词： | 电化学 纳米铜 标准摩尔熵 标准摩尔生成焓 标准摩尔生成吉布 斯自由能 |
Determination of thermodynamic functions for nano-materials via the electrochemical method |
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| WANG LuDe,HUANG ZaiYin,FAN GaoChao,ZHOU ZeGuang,TAN XueCai.Determination of thermodynamic functions for nano-materials via the electrochemical method[J].Scientia Sinica Chimica,2012(1):47-51. |
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| Authors: | WANG LuDe HUANG ZaiYin FAN GaoChao ZHOU ZeGuang TAN XueCai |
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| Institution: | 1 College of Chemistry ＆ Ecological Engineering,Guangxi University for Nationalities,Nanning 530006,China 2 Key Laboratory of Development and Application of Forestry Chemicals in Guangxi,Guangxi Zhuang Autonomous region,Nanning 530006,China |
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| Abstract: | Take nano-copper for an example,the electrochemical method is firstly used to obtain the thermodynamic functions of nano-materials.The nano-copper electrode,particle size of about 80 nm,is prepared by electrochemical deposition.Determine the potential difference between nano-copper and bulk-copper,and take the known value of thermodynamic functions of bulk-copper as reference standard,depending on the thermodynamic relations of nano and bulk-copper,it can simply get the standard molar enthalpy of formation,standard molar Gibbs free energy and standard molar entropy,which is 5.16 kJ mol-1？？0.216 kJ mol-1？？49.75 J K-1 mol-1 respectively,meanwhile,the heating effect of reversible cell for nano-copper is-4.95 kJ mol-1. |
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| Keywords: | electrochemistry nano-copper standard molar entropy of formation standard molar enthalpy of formation standard molar Gibbs free energy of formation |
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