化工进展2019，Vol.38Issue(3)：1487-1493,7.DOI:10.16085/j.issn.1000-6613.2018-0690
绿茶水热还原制备微纳米金属铜
Hydrothermal synthesis of micro/nano metallic copper using green tea water as both solvent and reductant
叶榆 1张凯伦 2霍地1
作者信息
- 1. 东北大学材料各向异性与织构教育部重点实验室, 辽宁 沈阳 110819
- 2. 东北大学材料科学与工程学院, 陶瓷与粉末冶金研究所, 辽宁 沈阳 110819
- 折叠
摘要
Abstract
Micro/nano metallic Cu powders with different morphologies were prepared by hydrothermal method using green tea water as both solvent and reductant. The effects of pH, green tea concentration, hydrothermal temperature and TiOSO4 additive on the phase purity and particle morphology of the micro/nano Cu were also investigated. The results show that pure Cu powders with nearly spherical shape could be obtained under the conditions of pH=3-12, the mass ratio of tea to water as 1∶100 and temperature of 200℃. When the ratio of tea to water or the reaction temperature was decreased, two phases of Cu and Cu2O would form, and the relative content of Cu2O in the product gradually increased. Additionally, using the pure Cu2O powders which were obtained by performing the first hydrothermal process as the starting material, one-dimensional metallic Cu rods with a length of 10-40μm and a diameter of 0.4-0.9μm were obtained after a second hydrothermal processing at 200℃ for 24 h with additive of 0.1 g TiOSO4.关键词
微尺度/微纳米金属Cu/绿茶茶水/水热/晶体形貌/绿色合成/还原Key words
micro scale/micro/nano metallic copper/green tea water/hydrothermal/crystal morphology/green synthesis/reduction分类
矿业与冶金引用本文复制引用
叶榆,张凯伦,霍地..绿茶水热还原制备微纳米金属铜[J].化工进展,2019,38(3):1487-1493,7.
