>
Fa   |   Ar   |   En
   A novel approach for synthesis of visible-light-active nano-crystalline TiO2 photocatalyst  
   
نویسنده Ashkarran A. A.
منبع journal of theoretical and applied physics - 2011 - دوره : 5 - شماره : 2 - صفحه:87 -93
چکیده    Silver doped tio2 nanoparticles were prepared by combination of sol-gel and arc discharge methods in liquid. the ag/tio2 nanoparticles were characterized by x-ray diffraction (xrd), transmission electron microscopy (tem) and ultra violet-visible absorption spectroscopy (uv-vis). the visible light photocatalytic activities were successfully demonstrated for the degradation of rhodamine b (rh. b) as a standard organic compound under the irradiation of 90 w halogen light for 2 h. the results revealed that the ag/tio2 nanoparticles extended the light absorption spectrum toward the visible region and significantly enhanced the rh. b photodegradation under visible light irradiation. 0.05 gr ag/tio2 nanoparticles exhibited highest photocatalytic efficiency. it has been confirmed that the ag/tio2 nanoparticles could be excited by visible light (e<3.2 ev). the significant enhancement in the ag/tio2 nanoparticles photocatalytic activity under visible light irradiation can be ascribed to the effect of doped noble metal ag by acting as electron traps in tio2 band gap.
کلیدواژه Silver doped TiO2; Liquid arc discharge; Sol-gel
آدرس islamic azad university, Plasma Physics Research Center, ایران
پست الکترونیکی ashkarran@srbiau.ac.ir
 
     
   
Authors
  
 
 

Copyright 2023
Islamic World Science Citation Center
All Rights Reserved