Photoelectrochemistry in particulate systems. 11. Reduction of phenosafranin dye in colloidal titanium dioxide and cadmium sulfide suspensions
Photoelectrochemistry in particulate systems. 11. Reduction of phenosafranin dye in colloidal titanium dioxide and cadmium sulfide suspensions
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DOI：
10.1021/la00085a005
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发表时间：
1989
期刊：
影响因子：
3.9
通讯作者：
K. R. Gopidas;P. Kamat
中科院分区：
文献类型：
--
作者：
K. R. Gopidas;P. Kamat
结论建立了角分辨红外光谱电化学方法，并成功地应用于电极/电解质界面的原位深度剖析。这项工作的结果表明，电致变色氧化镍在氧化（有色）状态下具有羟基氧化物结构，在还原（漂白）状态下含有氢氧化镍的α和α相。在还原状态下，镍基薄膜内部为氢氧化镍，电解质界面附近的薄膜外部为氢氧化镍。预计这种技术也可以用于探测其他金属氧化物薄膜中的多层。感谢D博士。M.麦克阿瑟和。K.卡彭特有益的讨论，R。S. Conell用于制备散装标准样品，以及Dr. J. L.约翰逊进行散装标准品的XRD表征。
ConclusionsAngle-resolved infrared spectroelectrochemistry was developed and successfully used for in situ depth profiling at the electrode/electrolyte interface. The results of this work showed that the electrochromic nickel oxide in the oxidized (colored) state has an oxyhydroxide structure and in the reduced (bleached) state contains both ß and a phases of nickelhydroxides. A sandwich structure is ev-ident, particularly in the reduced state with a nickel hy-droxide in the inner part of the film near the nickel substrate and ß nickel hydroxide in the outer part of the film near the electrolyte interface. It is expected that this technique can also be used to probe multiple layers in other metal oxide films.Acknowledgment. We thank Drs. D. M. MacArthur and. K. Carpenter for helpful discussions, R. S. Conell for preparation of the bulk standard samples, and Dr. J. L. Johnson for XRD characterization of the bulk standards.