Novel Ag₃PO₄/CeO₂composite with high efficiency and stability for photocatalytic applications

Synthesis, characterization and photocatalytic activity of visible-light-driven reduced graphene oxide–CeO2 nanocomposite

“…where v is the absolute electronegativity of the CeO 2 which is 5.57 eV [61], E C is the energy of free electrons on the hydrogen scale (4.5 eV) and E g is the band gap of CeO 2 . The calculated CB and VB potentials of CeO 2 vs normal hydrogen electrode (NHE) are E CB = -0.26 eV and E VB = ?…”

Enhancement of photocatalytic activity of combustion-synthesized CeO2/C3N4 nanoparticles

“…In the case of pure CeO 2 , the photoinduced electrons and holes may recombine in the bulk and the surface during the transfer process. However, in the case of CeO 2 / C 3 N 4 nanoparticles, the photoinduced charges can transfer and separate easily between CeO 2 and C 3 N 4 owing to their matching band positions [3,29]. The valence band maximum (VBM) and the conduction band minimum (CBM) of A a B b compound can be estimated from the absolute electronegativity of the atoms and the band gap of the semiconductors by the following equations [30]:…”

“…Owing to the increasingly serious energy crisis and environmental pollution, photocatalysis technology as a ''green'' technology for the development of renewable energy and the treatment of organic contaminants has attracted extensive attention in the past decades [1][2][3][4]. However, the most studied and typical photocatalyst TiO 2 suffers from the limited visible light response and the low photocatalytic quantum efficiencies.…”

Optical band structure and photogenerated carriers transfer dynamics in FTO/TiO 2 heterojunction photocatalysts

“…Generally, the wide gap semiconductor has been widely applied in photovoltaic fields due to its low cost, non-toxicity and good chemical stability, especially titanium dioxide (TiO 2 ) [1, [3][4][5][6]. However, the unsatisfactory recombination of photo-generated hole-electron pairs in semiconductor greatly inhibits photoelectric conversion efficiency and limits its industrial application [2,3,[7][8][9].…”

“…Recently, carbon structure, as a high-performance conductive material, has been widely investigated with above strategy [4,8,13]. Yao et al reported that carbon nanotube (CNTs)/TiO 2 composite material behaved faster charge separation ability, which showed nearly 2 times higher phenol degradation rate compared to the pure TiO 2 [14].…”