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Abstract Microporous SAPO-5 with an AFI topology has been synthesized by hydrothermal method; using this material, TiO2/SAPO-5 composite zeolites were prepared using sol-gel technique. The structures of SAPO-5 molecular sieves and TiO2/SAPO-5 composite zeolites were characterized by several analytical techniques. XRD patterns show the high crystallinity and purity of SAPO-5 molecular sieves. The small particle size (500-600 nm) and the large specific surface area have been analyzed by SEM and BET. The photocatalytic activity of TiO2/SAPO-5 composite zeolite was evaluated by photocatalytic degradation of phenol as model reaction. TiO2/SAPO-5 exhibits a higher activity for the degradation of phenol in comparison with pure TiO2.
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