A facile non‐hydrogenated method for fabrication of black TiO _{2‐ x} /bacterial cellulose composites with improved photocatalytic performance

Abstract Black titanium dioxide (TiO _{2‐ x} ) has attracted extensive attention owing to its visible light absorption and superior photodegradation activity. Here, black TiO _{2‐ x} nanocomposites are fabricated via a two‐step method followed by a heat treatment process under an argon atmosphere, and then the black TiO _{2‐ x} is loaded onto the bacterial cellulose surface by surface grafting. The presence of Ti ³⁺ species and oxygen vacancies is proved by XPS characterisation. Furthermore, the black TiO _{2‐ x} exhibits excellent photocatalytic activity for pollutants degradation.