Abstract
Abstract Synthesis of TiO2 photocatalysts with better activity via facile methods is desired to facilitate their applications. Here, we report a facile method to synthesize layered titanate/rutile heterojunction photocatalysts showing activity higher (up to twice) than that of a benchmark P25 TiO2 under irradiation with a solar simulator. In this method, a layered titanate (K0.8Ti1.73Li0.27O4) is treated with dilute HCl and dried under ambient conditions, resulting in the formation of rutile nanoparticles deposited on the outer particle surface of the protonated form of the layered titanate. The activity is identical to that of the prototype heterojunction synthesized by a similar method requiring a considerably longer time.
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