PANI/NaTaO3 composite photocatalyst for enhanced hydrogen generation under UV light irradiation

Zielińska, Beata; Schmidt, Beata; Mijowska, Ewa; Kaleńczuk, Ryszard

doi:10.1515/pjct-2017-0057

Abstract

A PANI/NaTaO₃ composite was successfully synthesized by an oxidative polymerization of aniline monomer in hydrochloric acid solution containing sodium tantalate. NaTaO₃ at a monoclinic structure was produced via hydrothermal method. The photocatalytic activities of the unmodified NaTaO₃ and PANI/NaTaO₃ were evaluated for hydrogen generation from an aqueous HCOOH solution and under UV light irradiation. The results showed that the evolution rate of H₂ increased significantly when NaTaO₃ was modified with PANI. The enhancement of the photocatalytic activity of PANI/NaTaO₃ composite was ascribed to the effective charge transfer and separation between NaTaO₃ and PANI, which reduced their recombination. This indicates that PANI modification of tantalate photocatalysts may open up a new way to prepare highly efficient catalytic materials for H₂ generation.

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PANI/NaTaO3 composite photocatalyst for enhanced hydrogen generation under UV light irradiation

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