Formation of nano-sized layer composite by intercalation to aluminium tri-hydrogen bis (orthophosphate) monohydrate

• Published in: Nanostructured materials Vol. 12; no. 1; pp. 491 - 494
• Main Authors: Sakamoto, K., Tsunawaki, Y., Nakahira, A., Kitahama, K., Ichihara, J., Yamaguchi, S.
• Format: Journal Article
• Language: English
• Published: Elsevier Science 1999
• ISSN: 0965-9773; 1872-9150
• DOI: 10.1016/S0965-9773(99)00166-X

Aluminium tri-hydrogen bis (orthophosphate) monohydrate [AlH
3(PO
4)
2·H
2O] is known as a material with a layered structure. We have synthesized the pure single phase of AlH
3(PO
4)
2·H
2O by solvothermal reaction, with high efficiency. It was formed by the reaction of Al(OH)
3 with H
3O
4 at 75 wt% : The optimum molar ratio of H
3PO
4 to Al(OH)
3 is 7.5. The mixture of H
3PO
4 and Al(OH)
3 in 1-propanol was refluxed at 94 °C for 24 hours under stirring. Furthermore, we intercalated phenylphosphonic acid into AlH
3(PO
4)
2 · H
2O at room temperature and obtained a material with nano-sized layers (d = 1.52 nm). Measurements of XRD and DTA-TG, and observations of SEM and TEM were made on products.