Fast photocatalytic degradation of bisphenol A by Ag 3 PO 4 /TiO 2 composites under solar radiation

Synthesis of TiO2–Ag3PO4 photocatalyst material with high adsorption capacity and photocatalytic activity: application in the removal of dyes and pesticides

“…The shape of the DRS spectra of the composite is a combination of that of Ag 3 PO 4 and TiO 2 further proving the absence of any chemical interaction between TiO 2 and Ag 3 PO 4 . This agrees with observation made by Taheri et al 33 The composite Ag 3 PO 4 –TiO 2 showed strong absorption in the visible light region due to the excellent visible light absorption by Ag 3 PO 4 . The composite Ag 3 PO 4 –TiO 2 can therefore harvest more visible light and result in an improved photocatalytic activity.…”

“…The synergy was highest at 25 wt% TiO 2 . A similar observation was reported by Taheri et al 33 This observation can be attributed to the formation of a heterojunction between the TiO 2 and the Ag 3 PO 4 . 33 In addition, the photocatalytic activity is also affected by the extend of surface coverage.…”

“…A similar observation was reported by Taheri et al 33 This observation can be attributed to the formation of a heterojunction between the TiO 2 and the Ag 3 PO 4 . 33 In addition, the photocatalytic activity is also affected by the extend of surface coverage. To obtain maximum photocatalytic activity, the extend at which the Ag 3 PO 4 surface is covered by TiO 2 should be minimized.…”

“…Under UV-visible light irradiation, the electrons in the valence band of Ag 3 PO 4 are excited into the conduction band resulting in the generation of holes in the valence band of Ag 3 PO 4 . Since the valence band maxima position of TiO 2 (+2.7 eV vs. NHE) is relatively higher than that of Ag 3 PO 4 (+2.9 eV vs. NHE), 33,37 the holes in the valence band of Ag 3 PO 4 will then be transferred into the valence band of TiO 2 while the photogenerated electrons will move in the conduction band of the Ag 3 PO 4 . This charge transfer is possible if and only if a heterojunction is created between the TiO 2 and the Ag 3 PO 4 .…”

Electrocatalytic Performance of V2O5/Ti Composite Membrane for High-Efficiency Treatment of Ammonia Nitrogen Wastewater

“…Current techniques for ammonia nitrogen effluent treatment mainly include biological method, 1-3 chemical precipitation method, 4,5 membrane method, [6][7][8] and photocatalytic oxidation method. [9][10][11][12][13] The membrane method has gained popularity in ammonia nitrogen effluent treatment due to its excellent separation performance and affordable investment costs. Adam et al 14 developed a zeolite-based ceramic hollow fiber membrane material that exhibited a desirable asymmetric structure, sufficient mechanical strength, and excellent pure water permeability, achieving 90% ammonia removal rate in artificial wastewater.…”