Optical and photocatalytic properties of the Fe-doped TiO2 nanoparticles loaded on the activated carbon

Enhanced Photocatalytic Degradation of Rhodamine B Using C/Fe Co-Doped Titanium Dioxide Coated on Activated Carbon

“…e XRD patterns ( Figure 2) show that Fe-C-TiO 2 after being coated on activated carbon exhibits the typical peaks referring to the anatase form [6]. e phase composition of nanoscale particles is preserved compared with the original materials ( Figure 3).…”

“…erefore, modification of catalyst is crucial to enhance its photocatalytic activity. To present, catalytic efficiency of TiO 2 was significantly improved by being doped with metals such as V, Cr, W, and Fe or with metal oxides like ZnO, CuO, and so on for expanding the absorption edge to the visible region [3][4][5][6]. Among these metals, TiO 2 doped with Fe is in progress because Fe can replace the positions of Ti 4+ in the crystalline, reducing the band gap energy, which is conducive to the activation in the visible light [3,4,7].…”

Hydrothermal synthesis of novel 1-aminoperylene diimide/TiO2/MoS2 composite with enhanced photocatalytic activity

“…The absorption intensity of NH 2 -PDI/TiO 2 /MoS 2 in visible light region was obviously enhanced, which could be attributed to the visible light absorption characteristics of NH 2 -PDI and MoS 2 nanoflakes. The band gap energy of the samples can be estimated by the formula Eg (eV) = 1240/λ AE (nm) using the position of the absorption edge (λ AE ) 44 . The downward slopes of the absorption curves are extrapolated to cross the X-axis and the λ AE -values of TiO 2 , MoS 2 /TiO 2 , NH 2 -PDI/TiO 2 , and NH 2 -PDI/TiO 2 /MoS 2 samples were estimated to be at 389 nm, 423 nm, 459 nm, and 467 nm, respectively (Fig.…”

Novel Removal of Diazinon Pesticide by Adsorption and Photocatalytic Degradation of Visible Light-Driven Fe-TiO2/Bent-Fe Photocatalyst

“…However, there was only anatase phase in the XRD pattern of the synthesized Fe-TiO 2 photocatalyst. is could be due to the incorporation of Fe dopant into TiO 2 lattice prevented the formation of the rutile phase [33,34].…”

“…e band gap structure of the TiO 2 is comprised of a valence band, which is mainly constructed from an O 2p orbital, and a conduction band, which is mainly constructed from an empty Ti 3d orbital. In the Fe-TiO 2 , the 3d orbitals of Fe dopant not only affected to the top of the valence band and the bottom of the conduction band of the TiO 2 but also inserted into the TiO 2 lattice structure to create a Fe impurity band under the conduction band and upper the valence band of the TiO 2 , formed an optical band gap [33,36]. erefore, the photoexcited electrons in the TiO 2 valence band could migrate to the Fe impurity band, and then move from the impurity band to the conduction band via next photon absorption.…”