CTAB-aided surface-modified tin oxide nanoparticles as an enhanced photocatalyst for water treatment

The surfactant-assisted SnO 2 nanoparticles were successfully prepared by a simple hydrothermal system with different reaction time intervals of 12 and 24 h. In this work, the cetyl trimethyl ammonium bromide (CTAB) surfactant used as the ligand as well as a morphology-controlling agent for SnO 2 na...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2020-05, Vol.31 (9), p.6618-6628
Main Authors: Bhuvaneswari, K., Pazhanivel, T., Palanisamy, G., Bharathi, G.
Format: Article
Language:English
Subjects:
Catalytic activity
Cetyltrimethylammonium bromide
Characterization and Evaluation of Materials
Chemistry and Materials Science
Current carriers
Free radicals
Hydrothermal systems
Materials Science
Morphology
Nanoparticles
Optical and Electronic Materials
Photocatalysis
Reaction time
Surfactants
Tin dioxide
Tin oxides
Water treatment
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Summary:The surfactant-assisted SnO 2 nanoparticles were successfully prepared by a simple hydrothermal system with different reaction time intervals of 12 and 24 h. In this work, the cetyl trimethyl ammonium bromide (CTAB) surfactant used as the ligand as well as a morphology-controlling agent for SnO 2 nanoparticles. The as-prepared and CTAB-assisted samples were systematically analysed by XRD, FTIR, UV, PL, SEM, TGA and DSC analyses. The XRD results clearly show that the formation of good crystalline SnO 2 nanoparticles with tetragonal structure. The SEM images confirm the morphological influence of CTAB in SnO 2 nanoparticles. The improved morphology gives a more active surface for the photocatalytic reaction and as a result, enhanced catalytic efficiency was observed. Similarly, the enhanced dye degradation ability was attributed to the effective production and use of photogenerated charge carriers on the surface of the tetragonal SnO 2 nanoplates towards the free radical formation. The role of active species in the catalytic process was investigated through a radical trapping experiment. The prepared catalyst shows superior photocatalytic activity, even after three consecutive cycles.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-020-03217-w