络合溶胶-凝胶法制备CuAlO2微晶及其光学性能研究

doi:10.3724/SP.J.1077.2011.00275

无机材料学报 ›› 2011, Vol. 26 ›› Issue (3): 275-280.DOI: 10.3724/SP.J.1077.2011.00275

络合溶胶-凝胶法制备CuAlO₂微晶及其光学性能研究

李抗,黄剑锋, 曹丽云,王博,施浙勇李抗,黄剑锋,曹丽云,王博,施浙勇

教育部轻化工助剂化学与技术重点实验室, 陕西科技大学, 西安 710021

收稿日期:2010-05-31 修回日期:2010-07-12 出版日期:2011-03-20 网络出版日期:2011-02-18
作者简介:李抗(1986-), 女, 硕士研究生.
基金资助:
国家自然科学基金(50942047); 教育部博士点基金(20070708001); 教育部新世纪优秀人才支持计划基金(NCET-06- 0893); 陕西省自然科学基金(2010JM6001); 陕西科技大学研究生创新基金

Preparationand Optical Properties of CuAlO₂ Microcrystallites by Complexing Sol-Gel

LI Kang, HUANG Jian-Feng,CAO Li-Yun, WANG Bo, SHI Zhe-Yong

Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology,Xi’an 710021, China

Received:2010-05-31 Revised:2010-07-12 Published:2011-03-20 Online:2011-02-18
Supported by:
National Natural Science Foundation of China (50942047); Doctorate Foundation of Ministry of Education in China (20070708001), Foundation of New Century Excellent Talent inUniversity of China (NCET-06-0893); Natural Science Foundation of Shaanxi Province (2010JM6001); The Postgraduate Innovation Foundation of SUST

摘要/Abstract

摘要： 以柠檬酸为络合剂, 采用络合溶胶-凝胶法合成CuAlO₂微晶. 通过TG-DTA、XRD、TEM等手段对凝胶的热分解机制、CuAlO₂微晶的形成过程、微晶的物相结构、微观形貌、粒度大小等进行了研究. 结果表明: 以硝酸铜、异丙醇铝和乙二醇为反应原料, 加入柠檬酸作为络合剂, 可以与金属离子形成络合物, 从而降低了合成CuAlO₂微晶的温度, 在1050℃煅烧即可得到颗粒细小、组分均匀、铜铁矿型CuAlO₂微晶, 晶体粒径为150nm左右. 利用紫外-可见光谱分析, CuAlO₂微晶的光学带隙约为3.75~4.05eV.络合溶胶-凝胶法制备 CuAlO₂ 微晶及其光学性能研究

关键词: 络合溶胶-凝胶法, CuAlO₂微晶, 光学带隙

Abstract: The microcrystalline CuAlO₂ was synthesized by complexing Sol-Gel method using citric acid as chelate.Thermal decomposition mechanism of the Gel, formation process of CuAlO₂ microcrystallites, phase structure, microstructure, grain size, etc, were investigated by TG-DTA, XRD,TEM. Results show that using copper nitrate, aluminum isopropoxide and ethyleneglycol as raw materials, citric acid as a complexing agent complexed with metalions can reduce the synthetic temperature of microcrystalline CuAlO₂.The microcrystalline delafossite-structured CuAlO₂ with smallparticles, uniform composition can be obtained at 1050 ℃. Its crystal particlesize is about 150nm in diameter. UV-Visible spectral analysis shows that the optical band gap of CuAlO₂ microcrystallite is about 3.75-4.05eV.

Key words: complexing Sol-Gel method, CuAlO₂ microcrystallites, optical band gap

中图分类号:

TB34

李抗, 黄剑锋, 曹丽云, 王博, 施浙勇,李抗, 黄剑锋, 曹丽云, 王博, 施浙勇. 络合溶胶-凝胶法制备CuAlO₂微晶及其光学性能研究[J]. 无机材料学报, 2011, 26(3): 275-280.

LI Kang, HUANG Jian-Feng,CAO Li-Yun, WANG Bo, SHI Zhe-Yong. Preparationand Optical Properties of CuAlO₂ Microcrystallites by Complexing Sol-Gel[J]. Journal of Inorganic Materials, 2011, 26(3): 275-280.

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络合溶胶-凝胶法制备CuAlO₂微晶及其光学性能研究

Preparationand Optical Properties of CuAlO₂ Microcrystallites by Complexing Sol-Gel

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