Characterization of dispersed titania nanosheet under aqueous conditions and its complex formation behavior with cationic porphyrin

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Abstract Cation exchange capacity (CEC) of titania nanosheet (TNS) and the complex formation behavior with the cationic porphyrin were investigated. It is turned out that the CEC value of TNS is 1.5 × 10 −3 eq g −1 according to a thermogravimetric analysis. The maximum adsorption ratio of the cationic porphyrin onto dispersed TNS surface was almost 100% versus CEC in aqueous conditions under the optimized concentration of the exfoliating reagent. This result indicates that cationic porphyrins adsorb densely without molecular aggregation.

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