Correlation investigation on the visible-light-driven photocatalytic activity and coordination structure of rutile Sn-Fe-TiO2 nanocrystallites for methylene blue degradation

Composition, valence and oxygen reduction reaction activity of Mn-based layered double hydroxides

“…Figure 3 shows the X-ray absorption spectra of the LDHs for purposes of qualitative discussion concerning the valences of transition metals. We discuss the valence of transition metals by using references; the absorption edges in these references are similar to their positions in past references [24][25][26][27][28][29]. Based on a comparison of the absorption spectra of Ni-Mn-Fe LDH and the standard samples, the average valence of Ni was estimated to be approximately 2 and that of Mn to be approximately 3.…”

Influences of Doping on Photocatalytic Properties of TiO2 Photocatalyst

“…Consequently, codoping can effectively enhance the photocatalytic activity. Based on the research of doping effects, two or more elements are introduced into TiO 2 lattice to check the changes of electronic structure and bandgap energy, including nonmetal and nonmetal atoms [248][249][250], nonmetal and metal atoms [251][252][253], and metal and metal atoms [254][255][256].…”

Structural and Magnetic Properties of 57Fe‐Doped TiO2 and 57Fe/Sn‐Codoped TiO2 Prepared by a Soft‐Chemical Process

“…Hence, the increase in susceptibility with increasing degree of Fe doping in 57 Fe‐TiO 2 can be explained by the increase in concentration of oxygen vacancies. Furthermore, our previous work revealed that the introduction of Sn into the TiO 2 lattice leads to an increase in the concentration of oxygen vacancies 24. Thus, it is reasonable to deduce that the introduction of Sn could result in an increase in susceptibility, particularly for low degrees of Fe doping.…”

“…Isopropyl titanate, an appropriate amount of iron(III) acetylacetonate, and tin(II) oxalate react with aqueous H 2 O 2 solution to form peroxometal complex precursors. After drying and calcination, they decomposed to TiO 2 including different amounts of 57 Fe or 57 Fe and Sn dopants 24…”