Titania is becoming an important material with versatile
applications as pigments, capacitors, solar cells, catalyst,
photocatalysts etc[1]. It has been extensively studied as an
effective photocatalyst for photocatalytic degradation of
organic and inorganic pollutants in waste water[2]. Due to
its unique properties like chemical inertness, non-toxicity and
photostability, titaniafinds a wide range of applications[3].
However, the major constraints for TiO2photocatalyst are its
low quantum efficiency, wide band gap (3.2 eV) energy, and
relatively high electron–hole recombination rate[4]. Therefore,
doping with metals in TiO2 is becoming essential to increase
the life time of the charge carrier as well as band gap tuning to
a desired level[5]. Metal doping affects the physico-chemical
properties like crystallinity, optical, textural and surface
properties etc of TiO2 toward its applications. The above
properties are influenced by different synthetic methods[6,7].
Silver doped TiO2 is very much attractive for better photocatalytic acivity in terms of enhancement of electron–hole
separation by acting as electron traps, extending light absorption into the visible range and modifying surface properties of
photocatalysts.