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Demonstrates enhanced photocatalytic activity in nanoflakes, suggesting effective degradation of pollutants.
A simple route was developed to synthesize Nd (Sm) doped Ca aluminate nanoflakes with polycrystalline structures. Different techniques were applied for analyzing the structure, morphology, optical, and photocatalytic properties of the Nd (Sm) doped Ca aluminate nanoflakes. Nd and Sm in the doped Ca aluminate nanoflakes exist in the form of hexagonal NdAl 11 O 18 and tetragonal SmCaAl 3 O 7 structures. Nd (Sm) dopants inhibit the growth of the Ca aluminate nanoflakes and induce the formation of the irregular nanoscale particles. Nd (Sm) doping obviously enhances the light absorption of the Ca aluminate nanoflakes and decreases the band gap. The band gap of 8 wt.% Nd (Sm) doped Ca aluminate nanoflakes decreases to 3.35 eV (Nd doping) and 3.34 eV (Sm doping), respectively. Photoluminescence spectra show that the Nd (Sm) doping inhibits the recombination of the photo‐induced electron‐hole pairs. Nd (Sm) doped Ca aluminate nanoflakes show enhanced catalytic activity towards crystal violet due to the enhanced ultraviolet light absorption ability, reduced band gap and recombination efficiency of the photo‐induced electron‐hole pairs.
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Chang et al. (2026) studied this question.
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