Fabrication of highly efficient visible light driven Ag/CeO2 photocatalyst for degradation of organic pollutants

Soot Oxidation over CeO2 or Ag/CeO2: Influences of Bulk Oxygen Vacancies and Surface Oxygen Vacancies on Activity and Stability of the Catalyst

“…The tiny characteristic diffraction peaks of Ag/CeO 2 ‐30, Ag/CeO 2 ‐50, and Ag/CeO 2 ‐70 (Figure d, Figure e, and Figure f) at 2 θ = 38.2°, 44.4°, and 64.6° belong to Ag 0 . AgO x was not found from the XRD results, which is consistent with the results studied by Muthuraj et al, Duan et al, and Zhenping et al…”

“…The average crystalline sizes of CeO 2 ‐30, CeO 2 ‐50, and CeO 2 ‐70 obtained by Scherrer's formula are 10.9 nm, 14.6 nm, and 15.2 nm, respectively. Structural changes of CeO 2 depicted in Figure d, Figure e, and Figure f were not observed after Ag impregnation, indicating a high dispersion of the silver species on the surface of the oxides . The tiny characteristic diffraction peaks of Ag/CeO 2 ‐30, Ag/CeO 2 ‐50, and Ag/CeO 2 ‐70 (Figure d, Figure e, and Figure f) at 2 θ = 38.2°, 44.4°, and 64.6° belong to Ag 0 .…”

Facile Synthesis of Magnetic Photocatalyst Ag/BiVO4/Mn1−xZnxFe2O4 and Its Highly Visible-Light-Driven Photocatalytic Activity

“…Further comparing the fully scanning XPS spectra, it can be seen that the characteristic profile of Ag3d was obvious in Ag/BiVO 4 /Mn 1−x Zn x Fe 2 O 4 while Ag peak in BiVO 4 /Mn 1−x Zn x Fe 2 O 4 was not observed. Thus, it was deduced that the doping Ag in BiVO 4 /Mn 1−x Zn x Fe 2 O 4 was successful [25]. The peaks at the binding energy of 373.9 eV and 367.9 eV in Figure 3b was severally ascribed to Ag 3d 3/2 and 3d 5/2 [19], revealing the existence of Ag + .…”

“…The transformation or conversion of the charged particles in the interface was strengthened. In other words, the presence of Ag particles boosted the quantum efficiency for BiVO 4 /Mn 1−x Zn x Fe 2 O 4 ; (3) Owing to the nanostructure of Ag particles, Ag/BiVO 4 /Mn 1−x Zn x Fe 2 O 4 possessed a relatively large specific surface area, which increased the efficient sites and further yielded a high photocatalytic activity [19,25]. Thus, nanostructure Ag particles ensured high photocatalytic property of Ag/BiVO 4 /Mn 1−x Zn x Fe 2 O 4 .…”

Veteran cupric oxide with new morphology and modified bandgap for superior photocatalytic activity against different kinds of organic contaminants (acidic, azo and triphenylmethane dyes)

“…The major merit of the photocatalysis is that it utilizes the solar energy inexhaustibly which is an environmentally friendly renewable energy resource and reduces the cost of the process considerably. Heterogeneous semiconductor photocatalysis is a catalytic process that occurs on the surface of semiconductor materials under the illumination of external photons [6][7][8][9][10]. For the degradation of pollutants in water and air the ideal photocatalyst should be a stable, inexpensive, non-toxic, and, most importantly, highly photo-catalytically active material [11,12].…”