[1] Wang Yihong, Song Wei, Gao Lijing, et al. Analysis of electrochemical impedance and XRD spectroscopyfor complex self-assembled film on silver [J]. Journal of Southeast University (English Edition), 2006, 22 (1): 121-124. [doi:10.3969/j.issn.1003-7985.2006.01.026]
Copy
Analysis of electrochemical impedance and XRD spectroscopyfor complex self-assembled film on silver(
)
银表面复合自组装膜的电化学阻抗和X射线衍射分析
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 22
- Issue:
- 2006 1
- Page:
- 121-124
- Research Field:
- Mathematics, Physics, Mechanics
- Publishing date:
- 2006-03-20
Info
- Title:
- Analysis of electrochemical impedance and XRD spectroscopyfor complex self-assembled film on silver
- 银表面复合自组装膜的电化学阻抗和X射线衍射分析
- Author(s):
- Wang Yihong1; 2; Song Wei2; Gao Lijing2; Ge Jie2; Gu Ning1
-
1State Key Laboratory of Bioelectronics, Nanjing 210096, China
2Department of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, China
- PACS:
- O484.4
- DOI:
- 10.3969/j.issn.1003-7985.2006.01.026
- Abstract:
- Self-assembled monolayers(SAMs)of(3-mercaptopropy)trimethoxysilane(3-MPT)chemisorbed on silver surfaces were chemically modified by 1-octadecanethiol to form self-assembled mixed-monolayers(SAMM)and the co-polymer of N-vinylcarbazole and methyl methacrylate ester(to form complex self-assembled film(CSAF)).The oxidation resistance of these barriers on silver surfaces and some influential factors concerned processes were analyzed by electrochemical impedance spectroscopy(EIS)in a 10% NaOH aqueous solution at oxidation potential.X-ray diffraction(XRD)spectroscopy shows that the oxidation occurring on the silver surface may be restrained effectively due to the coating barrier, and CSAF(Ⅱ)is the best one.Studies also reveal that oxide processes of bare silver and a series of modified silver electrodes in a 10% NaOH aqueous solution are of more than two relaxation time constants.
- 银表面组装有一系列自组装膜:3-巯基-三甲氧基硅烷(3-MPT SAMs)、3-巯基-三甲氧基硅烷与十八硫醇混合自组装膜(SAMM)以及两者之上分别自组装有乙烯基咔唑与甲基丙烯酸乙脂共聚物的复合自组装多层膜(CSAF(Ⅰ)和CSAF(Ⅱ)).这些惰性膜可作为金属表面的隔绝层.使用电化学阻抗(EIS)技术和X射线衍射(XRD)技术分析了表面修饰有这些自组装膜的银在10%氢氧化钠水溶液中的氧化阻力及其影响因素, 发现自组装膜的存在不同程度地抑制了银表面的氧化反应, 氧化过程存在2个以上时间常数.
References:
[1] Sagiv J.Organized monolayers by adsorption.1.Formation and structure of oleophobic mixed monolayers on solid surfaces [J].J Am Chem Soc, 1980, 102(1):92-98.
[2] Wang Yihong, Yu Qing, Zhang Yuan, et al.Self-assembled monolayers of(3-mercaptopropy)trimethoxysilane and its mixed-monolayers with alkanethiol on silver studied by electrochemistry and X-ray photoelectron spectroscopy [J].Applied Surface Science, 2004, 229(1-4):377-386.
[3] Wang Yihong, Song Wei, Zhou Jie, et al.Preparation and study of complex self-assembled film as a super-thin barrier on silver [J].Applied Surface Science, accepted to appear.
[4] Teijelo M L, Vilche J R, Arvia A J.Comparative voltammetric behaviour of the silver/silver oxide electrode prepared on vitreous carbon and silver substrates [J].J Applied Electrochemistry, 1988, 18(5):691-698.
[5] Fujishima Akira.Measuring methods in electrochemistry [M].Translated by Chen Z, Yao J N. Beijing:Beijing University Press, 1995: 216-237.(in Chinese)
[6] Liu Y H.Electrochemical measurement technique [M].Beijing:National Defense Press, 1987: 160-170.(in Chinese)
[7] Refaey S A M, Schwitzgebel G.Electrochemical impedance spectroscopic investigation of dissolution, passivation and pitting corrosion of Tin in Na2CO3 solution and the effect of Cl-and I-ions[J].Applied Surface Science, 1998, 135(1-4):243-245.
[8] Cao C, Zhang J.Electrochemical impedance spectroscopy[M].Beijing:Science Press, 2002: 56-188.(in Chinese)
[9] Dong S J, Che G L, Xie Y W.Chemically modified electrodes[M].Beijing:Science Press, 1995: 296-325.(in Chinese)
[10] Zheng X, Zhu L, Yan A, et al.Controlling synthesis of silver nanowires and dendrites in mixed surfactant solutions[J].J Colloid Interface Sci, 2003, 268(2):357-361.
[11] Waterhouse G I N, Bowmaker G A, Metson J B.Oxidation of a polycrystalline silver foil by reaction with ozone [J].Applied Surface Science, 2001, 183(3/4):191-204.
Memo
- Memo:
- Biography: Wang Yihong(1962—), female, associate professor, yihongwang@seu.edu.cn.