Click here to view fulltext PDF

Permanent link:
https://www.ias.ac.in/article/fulltext/jcsc/122/05/0771-0785

Aluminophosphates; doping; photocatalysis; dye degradation.

The metal ions (Ti⁺⁴, Mg⁺², Zn⁺² and Co⁺²) have been substituted in place of Al$^{+3}$ in aluminophosphates (AlPOs). These compounds were used for the first time as possible photocatalysts for the degradation of organic dyes. Among the doped AlPOs, ZnAlPO-5, CoAlPO-5, MgAlPO-11, 18 and 36 did not show any photocatalytic activity. MgAlPO-5 showed photocatalytic activity and different loading of Mg (4, 8, 12 atom % of Mg) were investigated. The activity can be enhanced by the increasing of concentration of the doped metal ions. TiAlPO-5 (4, 8, 12 atom % of Ti) showed the highest photocatalytic activity among all the compounds and its activity was compared to that of Degussa P25 (TiO₂). The activity of photocatalysts was correlated with the diffuse reflectance and photoluminescence spectra.

Avijit Kumar Paul¹ Manikanda Prabu¹ Giridhar Madras¹ Srinivasan Natarajan¹

1. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012

Published

September 2010

• SI_pages 771-785.pdf