Abstract
Titania pillared zirconium phosphate and titanium phosphate samples were prepared by intercalating titanium(IV) isopropoxide sol inside the phosphate layer. The sol-intercalated samples were calcined at various temperatures and characterised by different techniques. Basal spacing and surface area revealed that highest amount of pillaring in interlayer has taken place with 2 and 4 wt.% TiO 2 loading for ZrP and TiP, respectively. These pillared samples are stable up to 500 °C and exhibit highest surface area in the range of 70–172 m 2 g −1, basal spacing in the range of 15.5–25.9 Å, which is greater than that of neat ZrP and TiP. These materials also showed greater activity towards photo-oxidation of 4-nitrophenol under solar radiation. The low crystallite size, low pH pzc, high surface area, higher acid sites and larger basal spacing might be responsible for highest activity shown by 2 and 4 wt.% pillared ZrP and TiP, respectively.
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Schedule a callMore From: Journal of Photochemistry & Photobiology, A: Chemistry
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