TY  - JOUR
KW  - Anatase phase; Degradation rate; DR-UV-vis; Dye degradation; Environmental remediation; FT-Raman analysis; Methyl Orange; Methyl Violet; Methylene Blue; Nano-size; Optical absorption; Rutile phase; TEM analysis; TiO; Tungsten species; Visible region; Well-dispersed; XRD
KW  -  Azo dyes; Degradation; Oxide minerals; Photocatalysis; Photocatalysts; Pollution; Titanium; Titanium dioxide; Tungsten
KW  -  Loading
KW  -  dye; methyl orange; methylene blue; titanium dioxide; tungsten
KW  -  catalysis; catalyst; degradation; dye; environmental geology; oxide; photolysis; remediation; titanium; tungsten
KW  -  article; bioremediation; chemical modification; controlled study; decolorization; degradation kinetics; dispersion; particle size; photocatalysis; waste water management
KW  -  Azo Compounds; Catalysis; Coloring Agents; Gentian Violet; Kinetics; Methylene Blue; Microscopy
KW  -  Electron
KW  -  Transmission; Nanoparticles; Photochemical Processes; Spectrum Analysis; Titanium; Tungsten; Waste Disposal
KW  -  Fluid; Water Pollutants
KW  -  Chemical
IS  - 1-3
TI  - Preparation and characterization of tungsten-loaded titanium dioxide photocatalyst for enhanced dye degradation
N2  - Tungsten-loaded TiO2 photocatalyst has been successfully prepared and characterized. TEM analysis showed that the photocatalysts were nanosize with the tungsten species forming layers of coverage on the surface of TiO2, but not in clustered form. This was confirmed by XRD and FT-Raman analyses where tungsten species were well dispersed at lower loading (<6.5 mol), but were in crystalline WO3 at higher loadings (>12 mol). In addition, loading with tungsten could stabilize the anatase phase from transforming into inactive rutile phase and did not shift the optical absorption to the visible region as shown by DRUV-vis analysis. PZC value of TiO2 was found at 6.4, but the presence of tungsten at 6.5 mol WO3, decreased the PZC value to 3. Tungsten-loaded TiO2 was superior to unmodified TiO2 with 2-fold increase in degradation rate of methylene blue, and equally effective for the degradation of different class of dyes such as methyl violet and methyl orange at 1 mol WO3 loading. © 2009 Elsevier B.V. All rights reserved.
SN  - 03043894
EP  - 458
ID  - scholars1274
AV  - none
SP  - 451
Y1  - 2010///
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-74449088772&doi=10.1016%2fj.jhazmat.2009.11.050&partnerID=40&md5=4dc84ae835f1df05866704dfcddd46e0
A1  - Saepurahman
A1  - Abdullah, M.A.
A1  - Chong, F.K.
N1  - cited By 83
JF  - Journal of Hazardous Materials
VL  - 176
ER  -