配位沉淀制备高比表面积氢氧化铜纳米线/纳米棒

徐爽 曲景奎 魏广叶 齐涛

doi:10.12034/j.issn.1009-606X.217426

过程工程学报 >

2018 , Vol. 18 >Issue 5: 1052 - 1060

DOI: https://doi.org/10.12034/j.issn.1009-606X.217426

材料工程

配位沉淀制备高比表面积氢氧化铜纳米线/纳米棒

徐爽曲景奎魏广叶齐涛

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1. 中国科学院过程工程研究所绿色与工程重点实验室，湿法冶金清洁技术国家工程实验室，北京 100190 2. 中国科学院大学化学与化工学院，北京 100049

收稿日期: 2017-12-15

修回日期: 2018-07-13

网络出版日期: 2018-10-12

基金资助

中国科学院前沿科学重点研究项目;河南省科技开放合作项目;中国科学院科技服务网络计划(STS计划)项目

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Preparation of high specific surface area Cu(OH)₂ nanowires/nanorods by coordinated precipitation

Shuang XU Jingkui QU Guangye WEI Tao QI

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1. National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
2. School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Received date: 2017-12-15

Revised date: 2018-07-13

Online published: 2018-10-12

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摘要

以CuSO4?5H2O、氨水和NaOH为原料，采用配位沉淀法制备了不同形貌的Cu(OH)2纳米粉末，考察了NaOH用量、氨水用量和CuSO4初始浓度对颗粒形貌、粒度和比表面积的影响. 结果表明，在CuSO4初始浓度0.1 mol/L、摩尔比NH3:CuSO4=7和NaOH:CuSO4=2~4的条件下，Cu(OH)2由纳米线组装成花簇状，随NaOH用量增加，单头簇状结构减少，双头花簇状结构增多；在CuSO4初始浓度0.1 mol/L、摩尔比NaOH:CuSO4=2和NH3:CuSO4=7的条件下，得到由长径比为20~60的纳米线组成的直径为0.3~1 μm、长1~3 μm的花形簇状Cu(OH)2颗粒，其粒度分布均一，比表面积达83.3 m2/g，表面存在吸附水；在摩尔比NH3:CuSO4=3，NaOH:CuSO4=2的条件下，随CuSO4初始浓度降低，Cu(OH)2纳米线倾向组装成花形簇状结构.

关键词： 关键词：氢氧化铜; 前驱体法; 纳米线; 粒度分布; 比表面积

本文引用格式

徐爽曲景奎魏广叶齐涛 . 配位沉淀制备高比表面积氢氧化铜纳米线/纳米棒[J]. 过程工程学报, 2018 , 18(5) : 1052 -1060 . DOI: 10.12034/j.issn.1009-606X.217426

Abstract

Nano-copper hydroxide powder with different morphologies was synthesized by coordinated precipitation using CuSO4?5H2O, ammonia and NaOH as materials. The effects of amounts of NaOH and ammonia, and CuSO4 concentration on the morphology, particle size and specific surface area were investigated. The results showed that for different amounts of NaOH, when CuSO4 initial concentration was 0.1 mol/L, molar ratio of NH3:CuSO4=7 and molar ratio of NaOH:CuSO4=2~4, the prepared Cu (OH)2 was assembled into flower clusters by nanowires, and the numbers of flower-like structure of single head decreased and the double head flowers increased with amounts of NaOH increasing. For different amounts of ammonia, when CuSO4 initial concentration was 0.1 mol/L, molar ratio of NH3:NaOH=2 and molar ratio of NH3:CuSO4=7, the flower-like copper hydroxide of which the diameter was 0.3?1 μm and the length was 1?3 μm composed of nanowires the aspect ratio of which was 20?60 was obtained, and the Cu(OH)2 particles the surface on which had adsorbed water had uniform particle size distribution and the specific surface area of the powder was as large as 83.3 m2/g. For CuSO4 concentration, when molar ratio of NH3:CuSO4=3, and molar ratio of NaOH:CuSO4=2, the Cu(OH)2 nanowires tended to assemble into flower-like cluster structures with CuSO4 initial concentration decreasing.

Key words： Key words: copper hydroxide; precursor method; nanowire; particle size distribution; specific surface area.

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