The effect of the molecular structure of a cationic azo dye on the photoinduced intercalation of phenol in a montmorillonite |
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| Authors: | Tomohiko Okada Hideki Sakai Makoto Ogawa |
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| Affiliation: | aDepartment of Earth Sciences, Waseda University, Nishiwaseda 1–6–1, Shinjuku-ku, Tokyo 169–8050, Japan;bFaculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda 278–8510, Japan |
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| Abstract: | The effect of the molecular structure of a cationic azo dye on the photoinduced intercalation of phenol into the azo dye-montmorillonites was reported. Two types of cationic azo dyes were used; one has (2-hydroxyethyl)dimethylammonium group (AZ(OH)+), and the other has trimethylammonium group (AZ(CH3)+). Phenol was intercalated into both cation exchanged azo dye-montmorillonites (Kunipia F) by mechanical mixing without solvent. By the UV irradiation, the basal spacings increased further, and subsequent visible light irradiation led to decrease the basal spacings, indicating the intercalation and the deintercalation of phenol by the UV and visible light, respectively. The amounts of the phenol intercalated both chemically and photochemically varied depending on the azobenzene cations, showing the interactions between the cationic head group and phenol. |
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| Keywords: | Montmorillonite Photoinduced intercalation Cationic azo dye Phenol |
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