Synthesis of surface plasmon resonance (SPR) triggered Ag/TiO2 photocatalyst for degradation of endocrine disturbing compounds

Synthesis of spherical Ag/ZnO heterostructural composites with excellent photocatalytic activity under visible light and UV irradiation

“…When Ag/ZnO composites is irradiated by visible light, electron-hole pairs are photoinduced in the metallic Ag-NPs due to the strong SPR effect [41][42][43] . Moreover, Schottky barrier formed at the interface of Ag/ZnO can hinder the transfer of electron from the Ag to ZnO.…”

A review on plasmonic metal⿿TiO2 composite for generation, trapping, storing and dynamic vectorial transfer of photogenerated electrons across the Schottky junction in a photocatalytic system

“…TiO 2 nanoparticles synthesized via in situ sol-gel method followed by Ag deposition via reduction method with dextrose as reductant and sodium dodecyl sulfate as stabilizer exhibited excellent reduction of 4-nitrophenol to 4-aminophenol at room temperature suggesting the commercial exploitation of heterogeneous catalyst for the reduction of nitrocompounds [152]. Ag/TiO 2 with Ag > 0.5 wt% exhibited significant efficiency for the degradation of amoxicillin and 2,4-dichlorophenol (endocrine disturbing compounds) under artificial solar light when compared to TiO 2 [153]. This notable improvement was attributed by the unique characteristics of Ag SPR effect which enabled Ag to absorb light in the visible spectrum.…”

Reduced graphene oxide and Ag wrapped TiO2 photocatalyst for enhanced visible light photocatalysis

“…11,41,42 Further enhancement in the visible light region at ∼460 nm can be seen after the incorporation of Ag NPs into the composite (RGO-Ag/TiO 2 ). 16,25,43 The existence of Ag NPs on the surface of TiO 2 significantly oscillated the dielectric constant surrounding the matrix leading to the visible light absorption.…”

“…10,11 Many researchers had attempted to overcome these limitations through doping with metals and non-metals, hetero-structures, noble metal, etc. [12][13][14][15][16] Considering noble metal as a potential impurity turned out to be an alternative approach for reconstructing the weaknesses of TiO 2 . 17,18 Further to improve the optical absorption and enhancing the charge carrier transport, reduced graphene oxide (RGO) was used in the hybrids thus narrows the bandgap and minimize the electron-hole recombination rate.…”

“…29 The synthesis of TiO 2 and Ag/TiO 2 was obtained from our previous studies. 16,30 The RGO was achieved by dissolving 0.2 g of synthesized GO in Milli-Q water under ultrasonic condition for an hour. The wrapping was succeeded by adding 1 g of the prepared Ag/TiO 2 into the yellow-brown solution (GO solution) and stirred for 1 h until a homogeneous phase appeared.…”