Controllable Crystal Growth and Improved Photocatalytic Activity of Porous BiO-BiS Composite Sheets.

Porous BiO-BiS composite sheets were constructed through a combinational methodology of chemical bath deposition and hydrothermal reaction. The NaS precursor concentration in the hydrothermal solution was varied to understand the correlation between the vulcanization degree and structure evolution of the porous BiO-BiS composite sheets. The control of the etching rate of the BiO sheet template and the regrowth rate of BiS crystallites via suitable sulfide precursor concentration during the hydrothermal reaction utilizes the formation of porous BiO-BiS sheets.

Crystal Design and Photoactivity of TiO Nanorod Template Decorated with Nanostructured BiS Visible Light Sensitizer.

In this study, TiO-BiS composites with various morphologies were synthesized through hydrothermal vulcanization with sputtering deposited BiO sacrificial layer method on the TiO nanorod templates. The morphologies of decorated BiS nanostructures on the TiO nanorod templates are controlled by the duration of hydrothermal vulcanization treatment. The BiS crystals in lumpy filament, nanowire, and nanorod feature were decorated on the TiO nanorod template after 1, 3, and 5 h hydrothermal vulcanization, respectively.