Background: In recent years, the green synthesis of nanoparticles has taken a lead role
over the conventional chemical and physical approach due to its non-toxic, cost-effective parameters
and has found its place in various applications.
Objectives: The major objectives of this study were to synthesise and characterise the copper nanoparticles
using the rose extract at different set of conditions and analyse these nanoparticles as a
source of dye degradation agent under sunlight.
Methods: Present study was conducted with the aim to synthesize the copper nanoparticle using
the rose petal extract. The components present in the extract act as the reduction and stabilization
agents for the synthesis of CuNPs. The synthesized nanoparticles were characterized by using UVVIS,
FTIR, XRD and SEM analysis. Photocatalytic degradation of two dyes (Malachite Green and
Carbol fuchsin) was analysed using double beam spectroscopic analysis.
Results: UV-Vis analysis indicated the presence of a peak at around 630 nm. The FT-IR analysis
indicated the involvement of various biomolecules during the synthesis of nanoparticles. The
structure and the conformation were elucidated using XRD and SEM showed the agglomerated
form of the synthesized nanoparticles with the size range of about 60-90 nm. The synthesised copper
nanoparticles were used for the degradation of malachite green and carbol fuchsin dye using
photocatalytic under sunlight irradiation. UV-Vis spectral analysis indicated that synthesised copper
nanoparticle act more effective in degradation of malachite green (around 95%) whereas carbol
fuchsin showed a maximum degradation by 52% therefore suggesting that CuNPs act as an efficient
photocatalyst in dye degradation.
Conclusion: The results obtained from this study indicate that rose extract has the potential of synthesis
of copper nanoparticles which is non-toxic and convenient approach as compared to physical
and chemical synthesis. These nanoparticles can be effectively employed as dye decolourisation
agents to treat industrial effluent and prevent environmental pollution.
Keywords: Copper nanoparticles, UV-VIS spectroscopy, FTIR, XRD, SEM, dye degradation, rose petal extract.
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