TiO2 nanosheets with exposed {001} facets for photocatalytic applications

TiO 2 nanosheets with highly reactive {001} facets ({001}-TiO 2 ) have attracted great attention in the fields of science and technology because of their unique properties. In recent years, many efforts have been made to synthesize {001}-TiO 2 and to explore their applications in photocatalysis. In this review, we summarize the recent progress in preparing {001}-TiO 2 using different techniques such as hydrothermal, solvothermal, alcohothermal, chemical vapor deposition (CVD), and sol gel-based techniques. Furthermore, the enhanced efficiency of {001}-TiO 2 by modification of carbon materials, surface deposition of transition metals, and non-metal doping is reviewed. Then, the applications of {001}-TiO 2 -based photocatalysts in the degradation of organic dyes, hydrogen evolution, carbon dioxide (CO 2 ) reduction, bacterial disinfection, and dye-sensitized solar cells are summarized. We believe this entire review on TiO 2 nanosheets with {001} facets can further inspire researchers in associated fields.