纳米多孔铜氧化物多尺度构建与力学性能耦合机理研究

项目名称： 纳米多孔铜氧化物多尺度构建与力学性能耦合机理研究

项目编号： No.51471132

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 一般工业技术

项目作者： 杨卿

作者单位： 西安理工大学

项目金额： 84万元

中文摘要： 具有高比表面积的铜氧化物（氧化亚铜和氧化铜）在催化、传感、锂电池电极材料等领域有着显著的性能优势。针对纳米多孔铜容易氧化和高气体吸附的特点，借助金属热氧化方法生长金属氧化物低维纳米结构的优势，本项目提出通过热氧化纳米多孔铜实现纳米多孔铜氧化物的多尺度构建。脱合金前驱体Cu-Zn合金制备三维双连续纳米多孔铜，调控前驱体制备工艺、脱合金过程和纳米多孔铜热氧化工艺，精确表征纳米多孔铜氧化物的相成分及表/界面形貌等微观结构。考察纳米多孔铜及其氧化物微观结构与力学性能的演变规律，分析纳米多孔铜的热氧化行为及低维纳米铜氧化物在纳米多孔尺度下的生长机制。研究影响纳米多孔铜氧化物多尺度结构和力学性能的关键材料及工艺，建立纳米多孔铜氧化物多尺度结构的构建方法，阐明多尺度纳米多孔铜氧化物微观结构与力学性能的耦合机理。旨在为纳米多孔铜氧化物的功能结构一体化研究奠定基础，也为其他金属氧化物的多尺度构建提供新思路。

中文关键词： 纳米多孔铜；脱合金；热氧化；多尺度铜氧化物；力学性能

英文摘要： Nanoporous copper oxides (Cu2O and CuO) with high specific surface show excellent performance in the fields of catalysts, sensors and Li-battery electrodes. In consideration of the easy oxidation and high gas absorption of nanoporous coppers, by taking advantage of thermal oxidation of metals to prepare metal oxides with low dimensional nanostrucutres, the multi-scale preparation of nanoporous copper oxides by thermal oxidaiton of nanoporous copper is proposed in this research project. The nanoporous coppers with three dimensional bicontinuous structures will be prepared by dealloying of Cu-Zn alloy precursors. The fabrication and dealloying processes of precursors and thermal oxidation process of nanoporous coppers will be adjusted. The phase compositions, surface and interface morphologies and microstructures of nanoporous copper oxides will be characterized accurately. The evolution behavior of microstructures and mechanical properties of nanoporous coppers and nanoporous copper oxides will be investigated. The thermal oxidation behavior of nanoporous coppers and the growth mechanism of nanoporous copper oxides with low dimensional nanostructures in nanoporous condition will be analyzed. The key materials and processes affecting the multi-scale structures and mechanical properties will be studied. The multi-scale preparation of nanoporous copper oxides will be established. The couping mechanism of microstructures and mechanical properties of multi-scale nanoporous copper oxides will be clarified. The research achievements will establish the basis for further research on the functional and structural integration of nanoporous copper oxides and suggest the possibility of multi-scale preparation of other metal oxides as well.

英文关键词： Nanoporous Copper;Dealloying;Thermal Oxidation;Multi-Scale Copper Oxide;Mechanical Property