Hierarchically Z-scheme photocatalyst of Ag@AgCl decorated on BiVO4 (0 4 0) with enhancing photoelectrochemical and photocatalytic performance

Intercorrelated Superhybrid of AgBr Supported on Graphitic‐C3N4‐Decorated Nitrogen‐Doped Graphene: High Engineering Photocatalytic Activities for Water Purification and CO2 Reduction

“…Previous studies have authenticated that effi cient charge transfer at the semiconductor/electrolyte interface could suppresses the charge recombination and enhance the effi ciency of photocatalytic process. [ 20 ] Since the fi tted R ct value of ACNNG-50 nanocomposite is much smaller than those of CN and CNNG, ACNNG-50 superhybrid shows a preferable effi ciency of charge transfer. To examine the repeatability and photoresponse speed of the detectors of photoactive samples, the time-resolved photocurrent behaviors were measured (Figure 3 e).…”

Regulations of silver halide nanostructure and composites on photocatalysis

“…Such as in TiO 2 coupling system, the spectral absorption range tuning of TiO 2 is the key factor for its visible light photocatalytic performance modification [287][288][289][290][291][292]. The introduction of narrow bandgap AgBr plays a major role in spectral absorption range extension of AgBr/TiO 2 system [293], and especially with plasmonic Ag 0 generation, further intensive visible light utilization can be obtained [294][295][296]. In charge transfer mechanism for photoconversion efficiency enhancement, the photogenerated electrons generated in photo-excited AgBr were all transferred into TiO 2 nanoparticles as the CB of AgBr is more negative than TiO 2 , which promised the effective separation of charge carriers [297,298].…”

A Novel, Simple and Green Way to Fabricate BiVO4 with Excellent Photocatalytic Activity and Its Methylene Blue Decomposition Mechanism

“…In recent years, bismuth vanadate (BiVO 4 ) has attracted increasing attention as a promising photocatalyst owing to its non-toxicity, high stability, and excellent photocatalytic activity in organic dye degradation and water splitting [1][2][3][4][5][6][7][8]. It has three crystalline phases [9][10][11][12][13], monoclinic-scheelite, tetragonal-zircon, and tetragonal-scheelite, and exhibits phase transition under certain conditions.…”

“…Among all of theses methods, the aqueous method provides a milder environment for the synthesis of monoclinic BiVO 4 and allows the reaction parameters as well as the properties of the products to be easily tuned. Akihiko et al [30] reported an aqueous process for preparation of highly crystalline monoclinic and tetragonal BiVO 4 by reaction of the layered potassium vanadates KV 3 O 8 and K 3 V 5 O 14 with Bi(NO 3 ) 3 at 20˝C for 3 d. Kohtani et al [31] prepared BiVO 4 by stirring a equimolar mixture of aqueous Bi(NO 3 ) 3¨5 H 2 O and NH 4 VO 3 solutions (0.4 mol/L) containing HNO 3 (1.84 mol/L) with 7.5 g urea at 90˝C for 8 h. Tokunaga et al [10] fabricated the BiVO 4 by an aqueous process at room temperature by hydrolyzing a nitric acid solution of Bi(NO 3 ) 3 and Na 3 VO 4 using bases (Na 2 CO 3 and NaHCO 3 ) to adjust the pH. They found that BiVO 4 (s-m) and BiVO 4 (s-t) could be selectively prepared by adjusting the preparation time, and that BiVO 4 (s-m) obtained using 7.0 g of Na 2 CO 3 showed the highest photocatalytic O 2 evolution, while the activity of BiVO 4 (s-t) was negligible.…”