Ag/ZnO nanoparticles thin films as visible light photocatalysts

Superhydrophobic Ag decorated ZnO nanostructured thin film as effective surface enhanced Raman scattering substrates

“…The Ag@ZnO nanoworms display strong absorption in the UV and visible regions as seen in the figure. The red shift of plasmon absorption (lp) of Ag shows that the electron density of Ag decreases with increasing Ag content in the nanocomposites, which is due to the difference in their different work functions (5.2eV of ZnO against 4.1 eV of Ag) [24]. Hence we believe that the recombination can be reduced in the Ag@ZnO nanoworm that in turn is expected to enhance the SERS.…”

Semiconductor Nanocomposites for Visible Light Photocatalysis of Water Pollutants

“…At low pH of 3 greater adsorption of pollutant was observed and maximum degradation was reported. The structure maintained its stability to 100% (Figure 19) even after 3 cycles of use with fresh 2-CP [112].…”

“…Photocatalytic degradation of 2-CP was tested by using prepared thin films by varying experimental parameters, results determined the enhanced photocatalytic activity of Ag/ZnO as compared to pure ZnO, reason for enhanced photocatalytic activity was the presence of Ag at the surface of film which acted as scavenger for an excited electron. The film prepared at substrate having highest temperature presented stability even after 4 cycles with only 8.7% efficiency loss [112]. Yayapao et al prepared the undoped and Nd-doped ZnO nanoneedles using ultrasonic assisted solution method by varying the percentages of doped metal.…”

“…It was also discovered that the clusters which decorated the spheres Figure 19. [112]. only had Zn and O and did not have Ti atoms.…”

Ag Sm 2 O 3 nanocomposite for environmental remediation of cyanide from aqueous solution

“…This can be attributed to that Ag nanoparticles present on the surface of the Sm 2 O 3 matrix act as electron sinks thus hinder the recombination of photogenerated electrons-hole species thus enhancing the photocatalytic activity as compared to pure Sm 2 O 3 [21][22] . Furthermore, the narrowing of the band gap as a result of Ag addition may also be a significant contributor towards enhancement of the photocatalytic efficiency [23][24] .…”