Extended construction strategies of Ag3PO4-based heterojunction photocatalysts for robust environmental applications

Solvent Effect on the Structural, Optical, Morphology, and Antimicrobial Activity of Silver Phosphate Microcrystals by Conventional Hydrothermal Method

“…Therefore, it is confirmed that the decreasing order of contribution of oxidative species to the processes involved in the degradation of RhB dye molecules is O 2 •– > h + > HO • > e – . These results are in excellent agreement with the studies reported in the literature consulted. , …”

“…Therefore, it is noted that the SP-IA and SP-AH samples resulted in similar values, with the latter being the lowest value of E gap , while the lowest value was obtained for the SP-AC sample. The results confirmed the strong absorption in the visible spectrum of light region, which allows electronic transitions between the BV and BC bands, by absorbing radiation with a wavelength close to 6,31,46 using different synthesis methods. These differences are associated with structural defects, oxygen vacancies, and particle size, agreeing with the information presented in the XRD and Raman spectroscopy characterization.…”

“…These structures are commonly reported for silver phosphate when the hydrothermal method is adopted, using silver nitrate and mono-or dibasic sodium or potassium phosphate. 6,29,31,32,68 The synthesis conducted by the mixture between the solvents distilled water and isopropyl alcohol (SP-IA), as shown in parts of Figure 5(k−o), reveals that the predominant morphology for the microcrystals formed is the tetragonal and elongated rods. Hsieh et al 26 presented the synthesis, characterization and photocatalytic application of silver phosphate microcrystals with cubic morphology, dodecahedrons, and tetrahedrals and reveal in their literature review that the addition of ethyl alcohol to the reaction medium leads to the formation of tetragonal structures.…”

“…These results are in excellent agreement with the studies reported in the literature consulted. 6,25 The stability of the catalyst Ag 3 PO 4 (SP-AC), given the oxidative processes involved in the photodegradation of the RhB dye, was investigated through reuse in three consecutive cycles, as seen in Figure 7b. This study used 100 mg of the SP-AC sample in 100 mL of RhB dye solution at a concentration of 5 mg L −1 , after 20 min exposure to visible LED radiation.…”

Enhancing the Visible Light Photocatalytic Activity of TiO2-Based Coatings by the Addition of Exfoliated g-C3N4

“…Specifically, for the air depollution from NOx (NO and NO 2 ) gases, novel photocatalysts are searched for in order to tackle the main disadvantages of the TiO 2 , i.e., UV sensitization and substantial release of toxic NO 2 product. Other metal oxides [22,23], inorganic substances like Ag 3 PO 4 [24], and organic polymers like g-C 3 N 4 [25,26] alone or in the form of composites have been reported as very efficient photocatalytic materials owing to their visible light sensitization and/or low emission of NO 2 .…”