Synthesis of efficient silica supported TiO2/Ag2O heterostructured catalyst with enhanced photocatalytic performance

Construction of n-TiO2/p-Ag2O Junction on Carbon Fiber Cloth with Vis–NIR Photoresponse as a Filter-Membrane-Shaped Photocatalyst

“…7), work function ( Fig. 12) and energy band structure [42], the photocatalytic mechanism of CF/ (Fig. 13).…”

“…13). It is wellknown that a p-n junction forms between Ag 2 O and TiO 2 , due to the internal electric potential for directing the charge carriers to move oppositely [42]. When CF/TiO 2 /Ag 2 O cloth is illuminated by visible or NIR light, only the electrons in the valence-band (VB) of Ag 2 O can be excited.…”

Synthesis and photocatalytic activities of a CuO/TiO2 composite catalyst using aquatic plants with accumulated copper as a template

“…21 Currently, the remediation of environmental pollution is focused on using metal oxide based photocatalysts, and TiO 2 has become a promising metal oxide photocatalytic material because of its stability and catalytic efficiency. 22,23 However, the photocatalytic activities with TiO 2 catalysts is typically suitable under UV irradiation owing to the large band gap energy (3.2 eV), and this limits TiO 2 in practical applications. [22][23][24] For this reason, researchers have tried to modify the TiO 2 semiconductor material to be active in the visible region of the electromagnetic spectrum for different applications.…”

Photocatalytic and Antimicrobial Properties of Ag2O/TiO2 Heterojunction

“…The modification of titania with silver nanoparticles (NPs) or mixed silver forms (Ag(0), Ag + , Ag 2+ ) to prepare photocatalysts has already been performed by many research groups [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37]. However, in the case of Ag 2 O/TiO 2 system, there are only a few research papers and the mechanism of the coupling is still not fully understood [38][39][40][41][42][43][44][45][46][47][48][49]. The consequence of the p-n heterojunction is the movement of the photogenerated electrons to the conduction band of n-type TiO 2 and the photogenerated holes to the valence band of p-type Ag 2 O, which promotes an interfacial electron transfer causing the reduction of the charge recombination effect [42].…”