Screening of Heterogeneous Photocatalysts for Water Splitting

Abstract

In this contribution, a simple method for the screening of photocatalytic activity of catalyst materials is presented. The method is based on two steps: the immobilization of the photocatalyst and the subsequent testing of their photocatalytic activity, using the gas evolution at the solid-liquid interface. Up to four catalysts can be tested under the same conditions. The observed gas evolution for selected photocatalysts is consistent with trends reported in the literature from conventional photocatalytic reactors.

Photocatalytic degradation of methylene blue by anatase TiO 2 coating

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Photocatalytic coatings have the potential to contribute to the purification of water via an advanced oxidation process (AOP) [1]. A commonly used method for analyzing the mechanism of the photocatalytic performance of a given reactor type is to document the degradation behavior in a solution containing methylene blue.

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