Effect of Multiply Twinned Ag Nanoparticles on Photocatalytic Properties of TiO Nanosheets and TiO Nanostructured Thin Films.

Ag-decorated TiO nanostructured materials are promising photocatalysts. We used non-standard cryo-lyophilization and ArF laser ablation methods to produce TiO nanosheets and TiO nanostructured thin films decorated with Ag nanoparticles. Both methods have a common advantage in that they provide a single multiply twinned Ag characterized by {111} twin boundaries.

Removal of Ampicillin by Heterogeneous Photocatalysis: Combined Experimental and DFT Study.

A long-term exposition of antibiotics represents a serious problem for the environment, especially for human health. Heterogeneous photocatalysis opens a green way for their removal. Here, we correlated the structural-textural properties of TiO photocatalysts with their photocatalytic performance in ampicillin abatement.

The relationship between microstructure and photocatalytic behavior in lanthanum-modified 2D TiO nanosheets upon annealing of a freeze-cast precursor.

Titanium dioxide modified with 3 wt% La was prepared a green freeze-casting method, and its photocatalytic activity was tested in terms of its ability to degrade 4-chlorophenol (4-CP) and remove total organic carbon (TOC). Under annealing conditions, the freeze-cast precursor was transformed into an La-modified anatase with a well-defined 2D TiO nanosheet morphology. Rietveld refinement of the X-ray diffraction patterns confirmed the substitutional nature of the La cation that induced local structural variations and involved subtle ion displacement in the TiO lattice due to the ionic size effect.