One-step hydrothermal synthesis of hierarchical Ag/Bi2WO6 composites: In situ growth monitoring and photocatalytic activity studies

Visible-light-driven photocatalysis of heterostructure Ag/Bi2WO6 nanocomposites and their photocatalytic degradation of dye under visible light irradiation

“…The Ag nanoparticles were very dispersive due to the vibration of ultrasound during deposition. Thus the Ag nanoparticles of the current research were more distributive and homogenous than those of the previous reports [7,11]. They acted as electron traps to promote the electron-hole separation and to enhance the photocatalytic activity of the nanocomposites.…”

“…Moreover, TiO 2 catalyst can absorb only ultraviolet light, which occupies about 4 % of the sunlight [4][5][6] due to 3.20 eV energy gap of TiO 2 [5,6]. In order to cover the visible light composed of 43 % of the solar spectrum, highly active photocatalyst under visible-light irradiation has been widely developed [2,6,7].…”

Enhanced visible-light photocatalytic activities and mechanism insight of BiVO 4 /Bi 2 WO 6 composites with virus-like structures

“…However, the band gap of BWO is as wide as 2.8 eV, which makes it be excited only by a small part of the visible light ( < 450 nm). To overcome such a drawback, some efforts have been made recently, such as doping with metal or non-metal ions, co-doping with two or more ions, coupling with metals or other semiconductors [12][13][14][15]. Among them, coupling with another semiconductor has been investigated widely.…”

Photocatalytic degradation of fipronil in water by silver-modified lithium vanadium phosphate spheres under visible light irradiation

“…However, TiO 2 only exhibits photocatalytic activity under UV light irradiation (<387 nm) due to its broad band gap (3.2 eV) [3]. As substitutes for TiO 2 in practical applications, a great number of novel photocatalysts have been developed for visible light-sensitive photocatalysis using narrow-band-gap semiconductors such as C 3 N 4 [4], CdS [5], Cu 2 O [6], Bi 2 O 3 [7], BiVO 4 [8], and Bi 2 WO 6 [9] in recent years. The narrower band gap facilitates the excitation of electrons from the valence band (VB) to the conduction band (CB), which improves their photocatalytic performance.…”