Facile Synthesis of Ag Nanowire/TiO2 and Ag Nanowire/TiO2/GO Nanocomposites for Photocatalytic Degradation of Rhodamine B

Abstract

This paper investigates the photocatalytic characteristics of Ag nanowire (AgNW)/TiO2 and AgNW/TiO2/graphene oxide (GO) nanocomposites. Samples were synthesized by the direct coating of TiO2 particles on the surface of silver nanowires. As-prepared AgNW/TiO2 and AgNW/TiO2/GO nanocomposites were characterized by electron microscopy, X-ray diffraction, UV/visible absorption spectroscopy, and infrared spectroscopy. Transmission electron microscope (TEM) images confirmed the successful deposition of TiO2 nanoparticles on the surface of AgNWs. The photocatalytic activity of synthesized nanocomposites was evaluated using Rhodamine B (RhB) in an aqueous solution as the model organic dye. Results showed that synthesized AgNW/TiO2/GO nanocomposite has superior photocatalytic activities when it comes to the decomposition of RhB.

Fabrication and Application of Photocatalytic Composites and Water Treatment Facility Based on 3D Printing Technology

“…However, its forbidden band width is larger, thus metal doping is often used to reduce its band gap, thereby improving its catalytic performance. Ag, TiO 2 , and graphene were used for Hajipour et al [ 14 ] to make composites that have good photocatalytic degradation activity for organics. In their review, the photocatalytic decomposition of various organic compounds in water is clearly demonstrated by Matthews et al [ 15 ], showing that TiO 2 photocatalysis can completely oxidatively degrade hydrocarbons, surfactants, and organic pesticides in water.…”

One‐Pot Synthesis of Ag‐TiO2‐rGO Nanocomposites for Visible‐Light Photodegradation

“…The e − can react with O 2 adsorbed on the surface of the photocatalyst and release ⋅O 2 − , which can subsequently react with H 2 O and produce ⋅OH; the h + can also react with H 2 O to form ⋅OH. The generated ⋅O 2 − and ⋅OH radicals play a major role in the photodegradation of MB, as shown in Figure 10 (b) [15] …”

“…[13] It was reported that reduced GO (rGO) played a vital role as a photocatalyst carrier, which significantly improved the utilization efficiency of visible light and inhibited the recombination of electron-hole pairs. [14] Ag nanoparticles (Ag NPs) have been applied in photocatalysts, due to their unique chemical, optical, and electrical properties, [15] as well as localized surface plasmon resonance (LSPR) effect. [16] In our previous studies, the content of Ag NPs in Ag-TiO 2 nanocomposites was optimized, and the resulting photocatalytic enhancement of Ag NPs was investigated.…”

“…Ag nanoparticles (Ag NPs) have been applied in photocatalysts, due to their unique chemical, optical, and electrical properties, [15] as well as localized surface plasmon resonance (LSPR) effect [16] . In our previous studies, the content of Ag NPs in Ag‐TiO 2 nanocomposites was optimized, and the resulting photocatalytic enhancement of Ag NPs was investigated [17] .…”

Photocatalytic Activity of S-Scheme Heterostructure for Hydrogen Production and Organic Pollutant Removal: A Mini-Review

“…A possible answer to the above issues is represented by the photocatalytic technology, which is characterized by the use of light energy in order to degrade organic pollutants or to split the water molecule into its components. Fast charge carriers recombination and limited light absorption spectra represent key issues of the mono-component photocatalysts [7,8]. The development of heterostructure photocatalysts has the advantage of using an extended light spectra, lower recombination rate, and higher charge carrier concentration.…”