Microwave assisted synthesis of silver nanoparticles and its application in sustainable photocatalytic hydrogen evolution

Silver-Based Surface Plasmon Sensors: Fabrication and Applications

“…Anjana et al [ 100 ] reported a rapid and green microwave-assisted synthesis method using Cinnamomum cinereum (C. cinereum) as a reducing and capping agent to prepare silver NPs in a crystalline and spherical shape with an average size of 19.25 nm. Strapasson et al [ 101 ] used glycerol as a solvent and reducing agent and food-grade corn starch as a stabilizer to prepare silver nanoparticles by microwave radiation and the reaction principle is shown in Figure 6 a. The synthesis method was reproducible and the silver NPs synthesized after 320 days were highly stable as shown in Figure 6 b. Revnic et al [ 102 ] reported a very simple, rapid, and reproducible microwave-assisted preparation of anisotropic silver nanostars (AgNS), which consist of a central nanoparticle interconnected with several highly one-dimensional single arms having a star shape as shown in Figure 6 c,d.…”

“…Reprinted with permission from Ref. [ 101 ]. Copyright 2021, International Journal of Hydrogen Energy.…”

Hydrogen Production by Water Splitting with Support of Metal and Carbon-Based Photocatalysts

“…102 These findings emphasized the need for determining the optimal proportion of Ag concentration in a novel composite photocatalyst. Strapasson et al 103 produced Ag nanoparticles through the use of a byproduct of biodiesel generation, microwave irradiation, glycerol, as a reducing agent and solvent, along with food grade corn starch acting as a stabilizer, and then added them onto TiO 2 nanoparticles to photogenerate H 2 . The composite nanoparticles, as expected, had a substantially more stable rate of the evolution of H 2 .…”

Phototransformations of TiO2/Ag2O composites and their influence on photocatalytic water splitting accompanied by methanol photoreforming

“…For example, Strapasson et al demonstrated the significant enhancement of hydrogen evolution from photoreforming of methanol (from 1 μmol g −1 h −1 for bare TiO 2 up to 7 μmol g −1 h −1 ) with the increase of silver nanoparticle loading (1–5%). 27 Temerov et al showed that TiO 2 in an inverse opal structure exhibits no activity in H 2 evolution in gas-phase water-splitting under visible light irradiation, but after modification with silver nanoparticles, it exhibits H 2 production up to 0.86 ppm min −1 . 28 Moreover, Gogoi et al reported outstanding results in H 2 production from water splitting, achieving a rate of 23.5 μmol g −1 h −1 (with an apparent quantum yield of 19%), using TiO 2 decorated with silver nanoparticles with 1.5% nominal concentration.…”