Preparation and electrochemical behavior of methylene blue intercalated into layered niobate K4Nb6O17
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K4Nb6O17 nano-layered compound was obtained by solid-phase synthesis and then methylene blue (MB) was intercalated into layered niobate K4Nb6O17 interlayer I by a two-step guest-guest exchange method using the intercalation compound, methyl viologen (MV2+)–K4Nb6O17, as precursor. The optically transparent MB+–K4Nb6O17 nanocomposite thin film has been characterized by XRD, IR, TGA, elemental analysis, UV, and electrochemical measurements. It was estimated that the intercalated MB+ ions are mainly aggregated. The cyclic voltammogram of the MB+–K4Nb6O17 nanocomposite thin film exhibited a fine diffusion-controlled cathodic process, which hints the possibility of being utilized as an electrode modifying material.
KeywordsMethylene Blue Methylviologen Thermal Gravimetric Analysis Hybrid Film Intercalation Compound
This work was supported by a Grant-in-aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) and the CREST program of the Japan Science and Technology Agency (JST). We are grateful to young and middle aged academic leaders of Jiangsu Province universities’ “blue and green blue project.” This work is also be supported by National Natural Science Foundation of China (Grant No. 50873042).
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