Ultrathin Ag nanoparticles anchored on urchin-like WO₃·0.33H₂O for enhanced photocatalytic performance

Abstract

Ultrathin Ag nanoparticles anchored on urchin-like WO3·0.33H2O can be successfully achieved by a novel and facile self-catalytic reduction approach, and presented a better solar-driven photocatalytic performance than that of the individual WO3·0.33H2O.

One-step controllable synthesis of three-dimensional WO3 hierarchical architectures with different morphologies decorated with silver nanoparticles: enhancing the photocatalytic activity

“…The behavior observed in Fig. 13 also suggests that the gradual increase in light absorption can be attributed to the localized surfaceplasmon resonance (LSPR) of Ag nanoparticles, as previously reported by Ding et al and Ren et al 30,53 In addition, the bandgap energies of the as-prepared samples were estimated by the well-known Tauc equation. 54 Based on the plot of (ahn) 1/2 versus hn, the band-gap energies of samples WO 3 -0.0Ag, WO 3 -0.01Ag, WO 3 -0.05Ag, and WO 3 -0.20Ag were estimated to be 2.81, 2.55, 2.53, and 2.48 eV, respectively (inset in Fig.…”

“…), is an effective and suitable way to control size, shape, crystalline structure and composition of the hierarchical crystals. [6][7][8][9][10] These hybrid hierarchical architecture materials offer a wide range of technological applications including development of smart materials or intelligent systems; development of materials for application in nanobiotechnology, optoelectronics, sensors, solar cells, and photocatalysis. [11][12][13][14] In addition, the presence of the noble metal nanoparticles can inuence the morphology and properties of materials.…”

“…Xiang and co-workers 31 have reported successful growth of Au nanoparticles anchored on the monoclinic surface of WO 3 nanorods aer annealing at 500 C for 2 h. Xiaoyu et al 32 have reported three-dimensional Ag 2 O/WO 3 $0.33H 2 O hierarchical structures fabricated by chemical precipitation method for improving photocatlytic activity. Ren and co-workers 8 have reported the synthesis of Ag nanoparticles anchored on urchin-like WO 3 $0.33H 2 O hierarchical structure. The as-prepared hybrid hierarchical structure showed better photodegradation of Rhodamine B dye in comparison single WO 3 $0.33H 2 O.…”

Boosting photoresposive ability of WO3–Bi2O3 nanocomposite rods via annealing-induced intrinsic precipitation of nanosized Bi particles

“…The WO 3 -Ag-ZnO composite has been demonstrated to be a favorable example of this design concept and has high photocatalytic activity [21]. However, most noble metal particles are decorated on semiconductor nanostructures by using external methods [22,23], most of which are not reliable and steady methods of controlling the amount of metal particles adhered and the particle size; moreover, the reaction solution is usually expensive. According to the literature, metallic Bi exhibits similar behavior to the aforementioned noble metal and is beneficial for accelerating the electron-hole separation of Bi-modified TiO 2 photocatalysts [24] and Bi-Bi 2 WO 6 nanocomposites [25].…”