Synthesis, Characterization and Photocatalytic Properties of Nanostructured Sm-doped CdSe

Title
Synthesis, Characterization and Photocatalytic Properties of Nanostructured Sm-doped CdSe
Author(s)
주상우A.R. Khataee[A.R. Khataee]S. Fathinia[S. Fathinia]M. Fathinia[M. Fathinia]요네스피로즈살라리B. Soltani[B. Soltani]
Keywords
VISIBLE-LIGHT ACTIVITY; AQUEOUS-SOLUTION; MALACHITE GREEN; AZO DYES; TIO2; DEGRADATION; NANOPARTICLES; IRRADIATION; GRAPHENE; PERFORMANCE
Issue Date
201312
Publisher
BENTHAM SCIENCE PUBL LTD
Citation
CURRENT NANOSCIENCE, v.9, no.6, pp.780 - 786
Abstract
Samarium (Sm)-doped CdSe nanoparticles with different Sm contents were synthesized by an easy hydrothermal method using samarium (III) nitrate hexahydrate as the doping material. The products were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD analysis showed that the particles were crystallized to a high degree and corresponded to the cubic CdSe phase. SEM images indicated that the size range of synthesized nanocrystallites was 50-100 nm. The photocatalytic efficiency of pure and Sm-doped CdSe samples was evaluated by the degradation of C.I. Acid Orange 7 (AO7) in aqueous solution under visible light irradiation. The results showed that CdSe with Sm doping of 0.06 mole fraction led to enhanced photocatalytic activity. Color removal efficiency of 53.40% for CdSe and 90.08% for Sm0.06Cd0.94Se was achieved at 120 min. The Langmuir-Hinshelwood (L-H) adsorption and rate coefficients for the photocatalytic process were successfully established. Reusability tests were performed to test the stability of the photocatalysts. There was almost no loss of photocatalytic activity after four cycles of repeated use.
URI
http://hdl.handle.net/YU.REPOSITORY/28035
ISSN
1573-4137
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공과대학 > 기계공학부 > Articles
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