Photocatalytic performance of magnetically separable Fe, N co-doped TiO2-cobalt ferrite nanocomposite

Advances in Magnetically Separable Photocatalysts: Smart, Recyclable Materials for Water Pollution Mitigation

“…In all the CoFe 2 O 4 -incorporating nanocomposites, the enhancement in activity could be ascribed to the formation of a heterojunction between CoFe 2 O 4 and the other semiconductor, which allowed efficient charge separation and formation of the reactive species responsible for pollutant degradation. In addition, the presence of CoFe 2 O 4 endowed the nanocomposite photocatalysts with sufficient magnetic sensitivity for easy separation using an external magnetic field [193][194][195][196] [197], Fe,N-TiO 2 /CoFe 2 O 4 [198], and BiOBr/CoFe 2 O 4 [65].…”

Hydrogen Production through Glycerol Photoreforming on TiO2/Mesoporous Carbon: Influence of the Synthetic Method

“…Several approaches have been developed to overcome these challenges, such as (i) doping with metals [13], which can result in a shift of the light absorption to visible light, due to the electrons found in the d orbitals of metals, which would cause a "new band" below the conduction band, lowering the band gap (Eg) [14]. Metals could also serve as electron traps due to their redox potentials [15]; (ii) non-metal doping [16]; (iii) co-doping [17,18]; or (iv) coupling with other semiconductors [19,20], to cite just some examples. Another solution for dealing with these problems could be the combination of TiO 2 with a carbonaceous support [21].…”

Effects of Ag0-modification and Fe3+-doping on the structural, optical and photocatalytic properties of TiO2

“…In the last few years, titanium dioxide (TiO 2 ) has been widely used in the degradation of organic pollutants due to its strong photocatalytic ability, low cost, non-toxicity and chemical stability. [1][2][3][4] However, two main drawbacks limit its practical application. Firstly, with a wide energy gap of 3.2 eV, TiO 2 only absorbs ultraviolet light with a wavelength of less than 387 nm, therefore, the utilization rate of sunlight is limited.…”

“…Cu-doped TiO 2 lms were prepared by sol-gel dip-coating method, and their photodegradation rates are lower than that of pure TiO 2 lm, which has been reported by Bensouici et al 23 Compared with single element modication, multi-elements may produce a synergistic effect and further improve the photocatalytic activity of TiO 2 . 1,4,7,22,28 Zhang et al 28 synthesized Ln 3+ /Ag 0 -TiO 2 , Ln 3+ -TiO 2 , Ag 0 -TiO 2 and pure TiO 2, and photocatalytic tests show that Ln 3+ /Ag 0 -TiO 2 exhibits the best photocatalytic activity. Ln 3+ /Ag 0 -TiO 2 presents the lowest PL intensity because the synergistic effect of Ln 3+ doping and Ag 0 deposition provides more trap centers, which promotes the transfer of photoinduced electrons, suppressing the charge recombination effectively.…”