稀土镧在腈纶纤维化学镀银中的应用及其电化学性能  

Application of Lanthanum in Polyanaline Fiber′s Electroless Plating and Its Electrochemical Properties

作　　者：徐棚棚[1] 杨杰[1] 俞丹[1] 王炜[1] 

机构地区：[1]东华大学化学化工与生物工程学院,生态纺织教育部重点实验室,上海201620

出　　处：《应用化学》2013年第5期590-595,共6页Chinese Journal of Applied Chemistry

摘　　要：采用化学镀法(镀液中加入适量的稀土镧)在硅烷偶联剂改性后的腈纶纤维表面沉积金属银,由粒径分析、X射线衍射、扫描电子显微镜、阴极极化曲线以及循环伏安曲线等方法对其进行表征,研究了硝酸镧对化学镀银沉积速度、镀层质量和电化学性能的影响。结果表明,镀银液中加入适宜的硝酸镧,银的沉积速率和腈纶纤维表面银镀层的表面质量均有不同程度的提高。电化学测试表明,镀银液中增大硝酸镧的浓度(0～0.01 g/L),阴极极化曲线极化度增大,氧化还原峰的电流上升,电沉积的速度加快。Modified by silane coupling agents, polyacrylonitrile （PAN） fiber was deposited with silver by electroless plating with solution containing rare earth lanthanum. The grain size of the silver particle, the crystal structure and surface morphology of the silver-coated fiber film, and the electrochemical property of the plating solution were characterized by nano particle sizer （Nano-ZS）, X-ray diffraction （XRD）, scanning electron microscopy （ SEM）, cathodic polarization curves, and cyclic voltammetry （ CV）, respectively. The effects of lanthanum nitrate on the speed of plating, quality of the silver film and electrochemical property of the plating solution were analyzed. The results showed that the speed of metallic ion depositing and the quality of the silver-coated fiber film were improved with the addition of appropriate amount of lanthanum nitrate in the plating solution. With the concentration of lanthanum nitrate increase from 0 g/L to 0. 01 g/L in the plating solution, the polarization degree was increased, and the redox current peak and the speed of metallic ion deposition were also increased.

关 键 词：腈纶纤维 化学镀银 硝酸镧 电化学性能 

分 类 号：O616[理学—无机化学]