Laser-induced silver nanoparticles on titanium oxide for photocatalytic degradation of methylene blue.
Silver nanoparticles doped on titanium oxide (TiO(2)) were produced by laser-liquid interaction of silver nitrate (AgNO(3)) in isopropanol. Characteristics of Ag/TiO(2) (Ag doped TiO(2)) nanoparticles produced by the methods presented in this article were investigated by XRD, TEM, SEM, EDX, and UV-Vis. From the UV-Vis measurements, the absorption of visible light of the Ag/TiO(2) photocatalysts was improved (additional absorption at longer wavelength in visible light region) obviously. The photocatalytic efficiency of Ag/TiO(2) was tested by the degradation of methylene blue (MB) in aqueous solution. A maximum of 82.3% MB degradation is achieved by 2.0 wt% Ag/TiO(2) photocatalyst under 2 h illumination with a halogen lamp.
Whang
Thou-Jen
TJ
Department of Chemistry, National Cheng Kung University, No. 1, University Road, Tainan 70101, Taiwan.
Huang
Hsien-Yu
HY
Department of Chemistry, National Cheng Kung University, No. 1, University Road, Tainan 70101, Taiwan.
Hsieh
Mu-Tao
MT
Department of Chemistry, National Cheng Kung University, No. 1, University Road, Tainan 70101, Taiwan.
Chen
Jyun-Jen
JJ
Department of Chemistry, National Cheng Kung University, No. 1, University Road, Tainan 70101, Taiwan.
D002384:Catalysis; D007834:Lasers; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008751:Methylene Blue / Q000737:chemistry*; D010782:Photolysis; D012834:Silver / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D014867:Water / Q000737:chemistry
D014867:Water; C009495:titanium dioxide; D012834:Silver; D014025:Titanium; D008751:Methylene Blue