欢迎访问《电化学(中英文)》期刊官方网站,今天是

电化学(中英文) ›› 2006, Vol. 12 ›› Issue (3): 239-242. 

• 研究论文 •    下一篇

在乙酰胺-尿素-NaBr-KBr熔体中电沉积纳米Zn-Sb合金

刘鹏;郭新爱;童叶翔;杨绮琴;   

  1. 中山大学化学与化学工程学院,中山大学化学与化学工程学院,中山大学化学与化学工程学院,中山大学化学与化学工程学院 广东广州510275,广东广州510275,广东广州510275,广东广州510275
  • 收稿日期:2006-08-28 修回日期:2006-08-28 出版日期:2006-08-28 发布日期:2006-08-28

Electrodeposition of Nano-Sb-Zn Alloy in Acetamide-urea-NaBr-KBr Melt

LIU Peng,GUO Xin-ai,TONG Ye-xiang~*,YANG Qi-qin   

  1. (School of Chemistry and Chemical Engineering,Sun Yat-Sen University,Guangzhou 510275,Guangdong,China
  • Received:2006-08-28 Revised:2006-08-28 Published:2006-08-28 Online:2006-08-28

摘要: 应用循环伏安法研究Zn(II)和Sb(III)在乙酰胺-尿素-NaB r-KB r熔体(343 K)中的电还原.实验表明,Zn(II)和Sb(III)各自还原为金属都是不可逆过程.Zn(II)+2 e→Zn和Sb(III)+3 e→Sb的传递系数分别为0.231和0.319,Zn(II)和Sb(III)在熔体中的扩散系数分别为1.70×10-6和3.21×10-6cm2.s-1.在乙酰胺-尿素-NaB r-KB r熔体中,调节沉积电位和ZnC l2∶SbC l3(摩尔浓度比),得到Zn含量从29.67%变化到97.34%(by at.ratio)的纳米Zn-Sb合金膜.扫描电镜观测Zn-Sb膜的形态,Zn-Sb沉积膜颗粒大小均匀,粒径在50 nm左右.

关键词: Zn-Sb合金, 纳米膜, 乙酰胺-尿素-NaBr-KBr熔体, 电还原, 电沉积

Abstract: The electroreduction of Zn(II) and Sb(III) in acetamide-urea-NaBr-KBr(343 K) were studied by cyclic volatmmetry.The reduction of Zn(II) or Sb(III) to the metals is an irreversible process.The transfer coefficient of Zn(II)+2e→Zn and Sb(III) +3e→Sb were calculated to be 0.231 and 0.319,the diffusion coefficient of Zn(II) and Sb(III) in the melt were determined as 1.70 10~(-6) and 3.21 10~(-6) cm~(2)· s~(-1) respectively.The Zn-Sb films with different Zn content from 29.67 at% to 97.34 at% were electrodeposited in acetamide-urea-NaBr-KBr melt at 343 K by controlling the deposition potential and the Zn(II)/Sb(III) molar ratio.The morphology of Zn-Sb film was observed by SEM.Zn-Sb film comprises of nanoparticles,the size is uniform and the typical dimension is about 50 nm.The favorable prospect of the acetamide-urea-NaBr-KBr melt used as the electrolytic medium depositing nano-semiconductor alloys can be expected.

Key words: Zn-Sb film, Nanoparticles, Acetamide-urea-NaBr-KBr melt, Electroreduction, Electrodeposition

中图分类号: