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Abstract
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Herein, the Neodymium ion (Nd 3+ ) doped CoAl-LDH have been successfully prepared via co-precipitation
method and was used as a precursor of Nd-doped CoAl-mixed metal oxides (MMO). The photocatalytic
activity of doped LDH and MMO was investigated in the degradation of an azo dye, C.I. Acid Red 14, under
visible light irradiation. DRS and PL analysis demonstrated decreasing in the band gap energy and
recombination of photo-induced charge carriers of Nd-doped LDH and MMO compared with the pristine
CoAL-LDH. Due to significant difference in photocatalytic performance. A power law empirical kinetic
model was obtained for predicting the photocatalytic degradation efficiency.
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