Two‐Dimensional Hollow TiO₂ Nanoplates with Enhanced Photocatalytic Activity

Abstract

Abstract Two‐dimensional anatase TiO 2 hollow nanoplates were firstly synthesized through a facile synthesis route by using α‐Fe 2 O 3 nanoplates as removable templates. Two‐dimensional hollow TiO 2 nanoplates with different ratios of anatase and rutile phases were obtained by adjusting the calcining temperature. The average diameters were around 600 nm, and the shell thickness was approximately 30 nm. The photocatalytic performance of TiO 2 was investigated by decomposing rhodamine B under simulated sunlight. Among the TiO 2 samples, the anatase TiO 2 hollow nanoplates manifested a significant enhancement in the photocatalytic performances. The excellent catalytic performance can be attributed to the unique structure of the two‐dimensional anatase TiO 2 hollow nanoplates, including a large surface area and increased dye–photocatalyst contact areas as well as more active sites for photodegradation.