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化学学报
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化学学报 ›› 2004, Vol. 62 ›› Issue (16): 1524-1528. 上一篇    下一篇

研究论文

纳米金属微粒M-Al2O3介孔复合薄膜的光谱特性

梁燕萍1,2, 史启祯1, 吴振森2, 卢敏2   

  1. 1. 西北大学化学系, 陕西省物理无机化学重点实验室, 西安, 710069;
    2. 西安电子科技大学理学院, 西安, 710071
  • 投稿日期:2003-11-05 修回日期:2004-04-20 发布日期:2014-02-17
  • 通讯作者: hwws@nwu.edu.cn
  • 作者简介:史启祯;E-mail:hwws@nwu.edu.cn
  • 基金资助:
    国家部委预研基金(No.D20.2.5.3)和陕西省自然科学基金(No.2003B06)资助项目.

Absorption Spectra of Metal Nanometer Particle M-Al2O3 Meso-porous Composite Film

LIANG Yan-Ping1,2, SHI Qi-Zhen1, WU Zhen-Sen2, LU Min2   

  1. 1. Department of Chemistry, Northwest University, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Xi'an 710069;
    2. School of Science, Xidian University, Xi'an 710071
  • Received:2003-11-05 Revised:2004-04-20 Published:2014-02-17

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用电化学方法合成了纳米金属微粒M(M=Au,Ag,Cu,Co,Ni,CuAg)-Al2O3介孔复合薄膜,并研究了其在近紫外至可见光波范围的光谱特性.研究结果表明,复合薄膜的光吸收峰位置与纳米金属微粒和Al2O3介孔薄膜的介电常数有关,且随着膜层中纳米金属微粒复合量的增加,大幅度向红外波段移动;通过共沉积的方法形成的合金微粒复合膜也能使吸收边发生移动.同时还发现Ag-Al2O3,Au-Al2O3介孔复合薄膜分别在波长为360,500nm处存在等离子体共振吸收峰.

关键词: 纳米金属微粒, Al2O3介孔复合薄膜, 光特性

The ultraviolet-visible absorption spectrum of metal nanometer particle M-Al2O3 (M=Au, Ag, Cu, Co, Ni, CuAg) composite film synthesized by electrochemistry method was measured.The experimental results show that the peak of optical absorption spectra of nanometer particle composite film is dependent on the dielectric constant of metal nanometer particle and Al2O3 film, and with the increasing of deposition amount of nanoparticle in composite film, the absorption band-edge is red-shifted.It was also found that the properties of optical absorption can also be controlled by adulterating kinds of electrodeposited metal and its alloys.Meanwhile there is a clear absorption peak of surface plasmas resonance of Ag-Al2O3 and Au-Al2O3 composite film at 360 and 550 nm wavelength respectively.

Key words: metal nanometer particle, Al2O3 meso-porous composite film, optical property