Preparation, characterization and visible-light-driven photocatalytic activity of a novel Fe(III) porphyrin-sensitized TiO 2 nanotube photocatalyst

The effect of heat treatment on the anatase–rutile phase transformation and photocatalytic activity of Sn-doped TiO2 nanomaterials

“…Since photoluminescence (PL) emission is derived from the recombination of photogenerated electrons and holes, it can therefore provide accurate data of the recombination and separation of photogenerated pairs. 29,41 The photoluminescence spectra of pure TiO 2 and Sn–TiO 2 annealed at 500 °C are shown in Fig. 7 .…”

“…The anatase/rutile phase transition temperature is strongly affected by ion doping. The doping of several ions, such as Nd, 27 La, 28 Fe, 29 et al , raises the temperature. Meanwhile, doping with Sn reduces the temperature and promotes the transition from anatase to rutile.…”

Evaluation and Characterization of Ultrathin Poly(3-hydroxybutyrate) Fibers Loaded with Tetraphenylporphyrin and Its Complexes with Fe(III) and Sn(IV)

“…Of particular interest is the incorporation of porphyrin metal complexes as the special dopants into the PHB polymer. It is well known from the numerous literature papers that the complexes of metals with TPPs have unique photocatalytic and antimicrobial properties [ 18 , 19 ]. Metalloporphyrin complexes could promote the formation of the reactive oxygen species, such as superoxide radical anion, peroxide and hydroxyl radicals, and hydrogen peroxide, the cytostatic activity of these substances is well known.…”

Three-dimensional fast elemental mapping by soft X-ray dual-energy focal stacks imaging

“…Traditionally, nanoscale investigation of the internal structure within nanofibers has been possible using various techniques including soft X-ray and electron microscopies, which are limited to investigations of thin samples (Shenhar & Rotello, 2003;. For example, in transmission electron microscopy, sample preparation and mechanical slicing procedures are essential for thick samples, and scanning electron microscopy only enables surface or cross-section microstructures to be observed (McIntosh et al, 2005;Wei et al, 2017). Typically, nanotomography is the commonly used technique for the three-dimensional (3D) imaging-based scanning transmission soft X-ray microscope (STXM), which is still a challenge for thick, large size samples due to high absorption for rotation at large angles (Johansson et al, 2006;Schmid et al, 2014).…”