摘要:近年来,纳米材料作为一种新型的材料,引起了国内外研究者极大的关注。纳米材料出现独特的光学,磁性,电气和其他性质,在电子,医药等领域有潜在的巨大冲击。为了进一步提高Ag-Cu纳米合金的稳定性、合成的简易性,本论文以聚乙烯吡咯烷酮(PVP),乙酸铜(II)水合物(98%),乙二醇,硝酸银(> 99%)为原料,在175℃的加热条件下以多元醇方法成功合成出Ag-Cu合金。通过紫外光谱、拉曼光谱对所合成的纳米合金进行表征。采用紫外光谱法测定了不同Ag,Cu比例浓度下的吸光度,结果表明不同Ag,Cu比例浓度下其吸光度不同,Ag的比例越高,其吸光度越高。反应时间越长,其反应越充分。这将大大提高了Ag-Cu纳米合金在固态物理学中的应用价值。因此,本论文进一步为Ag-Cu纳米合金在材料科学领域的研究分析提供了新的研究思路。
毕业论文关键词: 聚乙烯吡咯烷酮(PVP);乙酸铜(II)水合物(98%);硝酸银(> 99%);Ag-Cu纳米合金;紫外可见吸收光谱;拉曼光谱71235
Synthesis and Characterization of Ag-Cu Alloy
In recent years, nano-materials as a new type of material, has aroused great concern at home and abroad researchers. Nano-materials appear unique optical, magnetic, electrical and other properties. It have a huge potential impact in the electronics, pharmaceutical and other fields. In order to further improve the stability of Ag-Cu nanocomposites, the simplicity of synthesis ,in this paper, polyvinylpyrrolidone (PVP), copper (II) acetate hydrate (98%), ethylene glycol and silver nitrate (> 99%) were synthesized Ag-Cu alloy by polyol method under heating at 175 ℃. The synthesized nanocomposites were characterized by UV and Raman spectroscopy. The results show that the absorbance of Ag and Cu is different. The higher the proportion of Ag, the higher the absorbance. The longer the reaction time, the more fully the reaction. It will greatly improve the Ag-Cu nano-alloy in solid-state physics in the application value. Therefore, this paper further provides a new research idea for the research and analysis of Ag-Cu nanocomposites in the field of materials science.
Keywords: Polyvinylpyrrolidone (PVP); Copper (II) acetate hydrate (98%); Silver nitrate (> 99%); Ag-Cu nanocomposites; UV-Vis absorption spectra; Raman spectra
目录
1前言 1
1.1 Ag-Cu合金的介绍 1
1.1.1 Ag的基本介绍 1
1.1.2 Cu的基本介绍 1
1.1.3 合金的基本介绍 2
1.2 纳米材料的介绍 3
1.2.1 纳米材料的基本介绍 3
1.2.2天然纳米材料 4
1.2.3纳米材料的表征方法 5
1.3拉曼光谱法介绍 5
1.3.1拉曼光谱法的基本介绍 5
1.3.2拉曼光谱仪介绍 6
1.3.3拉曼光谱法的现代应用 7
1.4紫外光谱法介绍 8
1.4.1紫外光谱法的基本介绍 8
1.4.2紫外可见吸收光谱仪介绍 9
1.4.3紫外光谱法的现代应用 10
1.5课题的目的和意义 11
2实验部分