Preparation and Characterization of Ag‐Loaded SmVO₄ for Photocatalysis Application

Abstract

Ag/SmVO4 composite photocatalysts were synthesized and characterized by BET, XRD, Raman, SEM, TEM, XPS and DRS techniques. Their photocatalytic activities were determined by oxidative decomposition of RhB in aqueous solution under visible light irradiation. The charge separation efficiency was evaluated by the photocurrent-time and ֹOH-trapping experiments. The results revealed that the loaded Ag species greatly improved the efficiency in charge separation, and thus led to enhanced photocatalytic activities compared with that of the pure SmVO4. The sample contained 0.5 wt% Ag and heated at 500°C presents the highest photoactivity.

New Application of Z-Scheme Ag3PO4/g-C3N4Composite in Converting CO2to Fuel

“…The DRS result indicates that the addition of Ag 3 PO 4 increases the photoabsorption performance of g-C 3 N 4 ; however, this cannot explain its significantly high photoactivity. Meanwhile, the PL, EIS, and PC experiments show that the introduction of Ag 3 PO 4 to g-C 3 N 4 greatly promotes the separation efficiency of electron–hole pairs, which is the basis of the high photoactivity of Ag 3 PO 4 /g-C 3 N 4 , as previously reported. − Because Ag nanoparticles are also formed in the composite, the metal Ag should show its contribution in separation of electron–hole pairs. − Nevertheless, the coupling effect of Ag 3 PO 4 and g-C 3 N 4 is believed to play a more important role based on the result of photocatalytic testing. However, an issue regarding the transfer route of the photoexcited charges in the system still persists.…”

PrVO4 under High Pressure: Effects on Structural, Optical, and Electrical Properties

“…Due primarily to their technological and theoretical relevance, REVO4 rare-earth orthovanadates (with RE=trivalent rare-earth atom) are currently receiving a great deal of attention. In fact, as a consequence of their optical and luminescent properties, many of these materials are suitable for real-world applications, such as photocatalysts for the elimination of some organic pollutants and dyes, [1][2][3] as host materials for laser applications, luminescent emitters, thermophosphors and non-linear optics. [4][5][6][7][8][9][10] These compounds are also challenging from the point of view theory and basic research, especially in the field of High-Pressure Physics.…”

Phase Behavior of TmVO4 under Hydrostatic Compression: An Experimental and Theoretical Study

“…The importance of these compounds in real-world applications and in fundamental research cannot be overstated. From a technological point of view, the interest in RE orthovanadates is mainly sparked by their optical and luminescent properties, which make them suitable candidates for use as phosphors, thermophosphors, laser host materials, and nonlinear optical elements. − These compounds are also promising candidates in applications related to the photodegradation of organic pollutants and dyes. − With regard to basic research, RE orthovanadates are an outstanding playground for the experimental and theoretical study of phase transitions under high pressure (HP) and the effect played by experimental conditions. Among rare-earth orthovanadates, TmVO 4 has been mainly the object of studies dealing with the Jahn–Teller phase transition which appears in this compound at a temperature below 2.15 K. − At the moment, though, there is a complete lack of information on the behavior of TmVO 4 under high-pressure conditions.…”