Enhanced photocatalytic degradation of RO16 dye using Ag modified ZnO nanopowders prepared by the solvothermal method
2017
In this work, Zn(CH3COO)2 • 2H2O with AgNO3 content from 0 to 6mol% was
solvothermally treated at 120°C for 18 h in the presence of poly(vinyl
pyrrolidone), ethylene glycol and sodium hydroxide. The structural,
microstructural and photocatalytic properties of the unmodified and Ag
modified ZnO powders have been investigated by the XRPD, FESEM, TEM, UV-vis,
Raman and BET techniques. The Ag modified samples consist of ZnO nanocrystals
and metallic Ag on the surface. The average crystallite size of all samples
was about 20 nm. The FESEM revealed the uniformity in size and approximately
spherical shape of ZnO nanoparticles. The BET data suggest that all prepared
samples are mesoporous. All prepared samples showed higher photocatalytic
efficiency in the degradation of the Reactive Orange 16 (RO16) azo dye than
the commercial ZnO. In addition, Ag modified ZnO powders, especially those
with 1.5 and 0.75mol%of Ag, were more efficient than the unmodified one.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
0
References
7
Citations
NaN
KQI