Electrochemical synthesis and characterization of tantalum alkozides
Tantalum(Ⅴ) propoxide (Ta(Oprn)5),isopropoxide (Ta(Opri)5) and butoxide(Ta(Obun)5) were synthesized by electro-chemical reactions of corresponding alcohol at sacrificial tantalum anode in the presence of tetraethylammonium chloride as a conductive additive.The pure products were isolated by reduced pressure distillation under 5 kPa.The crystal of Ta(Opri)5 was obtained by recrystallization from hexane at-10 ℃.These samples were characterized by Fourier transform infrared spectra (FT-IR),Raman spectra,nuclear magnetic resonance spectra (NMR),TG/DTA and ICP-MS.The results show that direct electrochemical synthesis of metal alkoxides has a high current efficiency and electrolysis yield.These alkoxides have a high purity of 99.97% and can be directly used as the precursor of Ta2O5 films.
electrochemical synthesis tantalum alkozides spectral characterization thermal analysis
YANG Sheng-hai CAI Ya-nan YANG Hai-ping JIN Sheng-ming
School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China
国际会议
2009 Frontier Symposium of China Postductors on Materrials Science(2009年中国博士后材料科学前言论坛)
长沙
英文
1504-1508
2009-11-22（万方平台首次上网日期，不代表论文的发表时间）