Effect of surface Ag metallization on the photocatalytic properties of BaTiO3: Surface plasmon effect and variation in the Schottky barrier height

Surface plasmon resonance effect of Ag metallized SnO2 particles: Exploration of metal induced gap states and characteristic properties of Ohmic junction

“…This effect arises as a result of collective modes of oscillations of the free electrons induced by its interaction with electromagnetic field; (c) Ag nano deposits on the SnO 2 can enhance local field energy under the visible light excitation through the SPR effect, and this field separates the photogenerated electrons and holes reducing the recombination; (d) the thickness of the accumulation layer/space charge region is influenced by the size of the deposited metal nanoparticles. In the present, research optimum amount of Ag (0.028 %) was deposited on the SnO 2 surface based on the results obtained earlier; (e) the CB edge of Ag‐SnO 2 is much lower than the O 2 /O 2 −• redox potential and hence superoxide radical formation is less probable. The photogenerated electrons however can move from the CB to the oxygen molecule to generate H 2 O 2 since the redox potential of O 2 /H 2 O 2 perfectly matches with it.…”

Bottom-up construction of reduced-graphene-oxide-anchored spinel magnet Fe2.02Ni1.01O3.22, anatase TiO2 and metallic Ag nanoparticles and their synergy in photocatalytic water reduction

“…The absorption coefficients 'α' were deduced from the reflectance curves 'R', according to the Kubelka-Munk formula (11) 63,54 :…”

“…This can be explained by the extension of the lifetime of photogenerated carriers; when Ag is deposited on the surface of the semiconductor (NiFe 2 O 4 -TiO 2 /rGO 10% ) (Schottky junction), at the interface, the band states of the metallic Ag are deeply buried into the band states of semiconductors 75 . In such situation, two parameters of the semiconductor must raise the work function of the electrons in the semiconductors and the Fermi level 63 . Furthermore, when the semiconductor is excited, the electrons of the CB flow into the Ag metal until equilibrium that is achieved when the Fermi energies are the same for both the metal and the semiconductor.…”

Effect of ferroelectric polarization on piezo/photocatalysis in Ag nanoparticles loaded 0.5(Ba0.7Ca0.3)TiO3–0.5Ba(Zr0.1Ti0.9)O3 composites towards the degradation of organic pollutants

“…21 Novel metals such as Ag and Au are well reported for enhancing photocatalysis using the surface plasmon resonance effect. 22,23 Ferroelectric materials have also shown surface plasmon resonance for improved photocatalysis. [24][25][26] The present study is planned to understand the effect of electric poling and novel metals association on ferroelectric ceramic.…”