The dual role of Au nanoparticles in the surface plasmon resonance enhanced photocatalyst Au/g-C3N4

A review on plasmonic-based heterojunction photocatalysts for degradation of organic pollutants in wastewater

“…As plasmonic materials, the metal NPs improve the absorption of visible light and produce hot electrons by the LSPR. This creates a robust local electric field that supports photocatalyst reactions by greatly increasing the absorption of UV and visible light in broadband and narrowband photocatalysts, respectively [ 120 ]. In short, the Schottky barrier created by the metal NPs and semiconductors makes it easier for the separation and transfer of charge carriers.…”

Ni loaded SnS2 hexagonal nanosheets for photocatalytic hydrogen generation via water splitting

“…Many researchers have reported that noble metal NPs, such as Au, Pt, Ag, Rh, Ni-Pt, Pd, Cu-Pd, and Au-Pd have been reported resulting in enhanced overall photocatalytic activity by enhancing the electron-hole charge separation. [61][62][63][64][65][66][67][68][69][70][71] In this regard, SnS 2 nanostructures were synthesized by hydrothermal method and were in situ decorated with Ni as a cocatalyst having different concentrations of Ni i.e., 1 mol%, 2.5 mol%, 5 mol%, and 10 mol% through a simple thermal reduction method. The detailed physico-chemical characterisation and inuence of Ni loading on SnS 2 towards its photocatalytic performance were investigated.…”

“…Many researchers have reported that noble metal NPs, such as Au, Pt, Ag, Rh, Ni-Pt, Pd, Cu-Pd, and Au-Pd have been reported resulting in enhanced overall photocatalytic activity by enhancing the electron–hole charge separation. 61–71…”

Nanoengineered Au–carbon nitride interfaces enhance photocatalytic pure water splitting to hydrogen

“…20 Gold (Au) NPs are enticing candidates for plasmon-mediated carrier transfer research due to their strong plasmonic resonance under visible light or nearinfrared ranges, and their ability to form Schottky barriers with semiconductors like CNs and TiO 2 . 20,21 Various protocols such as photoreduction, impregnation and deposition-precipitation are employed to decorate Au NPs on semiconductor surfaces. 11 Furthermore, ligands play important roles in the rational design of these NPs, such as size, shape, and interparticle spacing, and also in determining the properties of the interface between the NPs and semiconductors.…”

“…20 The LSPR effect enhances the photocatalytic HER by the generation of hot electrons, resonant energy transfer, local electromagnetic field enhancement and direct electron transfer. 21 The LSPR frequency depends on the size, shape, composition and structure of the NPs, as well as the environment dielectric constant. 20 Gold (Au) NPs are enticing candidates for plasmon-mediated carrier transfer research due to their strong plasmonic resonance under visible light or near-infrared ranges, and their ability to form Schottky barriers with semiconductors like CNs and TiO 2 .…”