Effective nitrogen doping into TiO2 (N-TiO2) for visible light response photocatalysis

High-performance ultraviolet-visible driven ZnO morphologies photocatalyst obtained by microwave-assisted hydrothermal method

“…8B), the samples also exhibited a different behavior. It is expected that, with lower band gap value of the sample, the visible photocatalytic activity increase (Table 4) [47,48]. However, this does not always occur.…”

Influence of electronic structure on visible light photocatalytic activity of nitrogen-doped TiO2

“…The interstitial nitrogen (N i ) and substitutional nitrogen (N s ) are supposed to have different inuences on the electronic states as well as vis light activities. Some authors have reported that N s contributes the generation of N-derived states and facilitates vis light photocatalysis, 3,5,[7][8][9] whereas others have claimed that photoactive nitrogen is not N s but just N i . [10][11][12][13] Very recently, DFT (density functional theory) calculation has shown that N prefers to replace Ti (Ti-vacancy-site: N Ti ) rather than O to form NO x .…”

Photo-activity and low resistivity in N/Nb Co-doped TiO2 thin films by combinatorial AACVD

“…10 Nitrogen was found to reside as both an interstitial (~396 eV) and substitutional (~399 eV) dopant from the surface all the way through to the bulk. [31][32][33][34] The surface concentration of nitrogen can be found in Figure 5. The concentration of nitrogen is found to vary by an order of magnitude between the surface and within the bulk were niobium is found.…”