Green synthesis of copper oxide nanoparticles and its efficiency in degradation of rifampicin antibiotic

Abstract

In recent ages, green nanotechnology has gained attraction in the synthesis of metallic nanoparticles due to their cost-effectiveness, simple preparation steps, and environmentally-friendly. In the present study, copper oxide nanoparticles (CuO NPs) were prepared using Parthenium hysterophorus whole plant aqueous extract as a reducing, stabilizing, and capping agent. The CuO NPs were characterized via UV–Vis Spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), powder X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and Dynamic Light Scattering (DLS). The UV–Vis spectra of CuO NPs showed a surface plasmonic resonance band to occur at 340 nm. FTIR analysis revealed the presence of secondary metabolites on the surface of CuO NPs, with a characteristic Cu–O stretching band being identified at 522 cm−1. Scanning electron micrographs and transmission electron micrographs showed that CuO NPs were nearly spherical, with an average particle of 59.99 nm obtained from the SEM micrograph. The monoclinic crystalline structure of CuO NPs was confirmed using XRD, and crystallite size calculated using the Scherrer-Debye equation was found to be 31.58 nm. DLS showed the presence of nanoparticle agglomeration, which revealed uniformity of the CuO NPs. Furthermore, the degradation ability of biosynthesized nanoparticles was investigated against rifampicin antibiotic. The results showed that the optimum degradation efficiency of rifampicin at 98.43% was obtained at 65℃ temperature, 50 mg dosage of CuO NPs, 10 mg/L concentration of rifampicin solution, and rifampicin solution at pH 2 in 8 min. From this study, it can be concluded that CuO NPs synthesized from Parthenium hysterophorus aqueous extract are promising in the remediation of environmental pollution from antibiotics. In this light, the study reports that Parthenium hysterophorus-mediated green synthesis of CuO NPs can effectively address environmental pollution in cost-effective, eco-friendly, and sustainable ways.

An Eco-Friendly Synthesis Approach for Enhanced Photocatalytic and Antibacterial Properties of Copper Oxide Nanoparticles Using Coelastrella terrestris Algal Extract

“… 57 The –C=O stretching peak of amide at 1654 cm −1 in the algal extract was shifted towards lower wavenumber 1627 cm −1 , 1629 cm −1 , 1611 cm −1 in CuO-1, CuO-2, and CuO-3, respectively. 31 The peak at 1629 cm −1 in CuO-4 was associated with atmospheric CO 2 . The peak at 1537 cm −1 in the algal extract was shifted to 1467 cm −1 , 1494 cm −1 , 1482 cm −1 in CuO-1, CuO-2, and CuO-3, respectively.…”

Synergistic Antifungal Activity of Dialdehyde Chitosan Loaded with Copper Metal‐Organic Framework (Cu‐MOF)

“…The degree of crystallinity for Cu‐MOF, and Cu‐MOF‐OCs was calculated and found to be 49.9 %, and 33.5 % respectively. The mean calculated crystallite size for Cu‐MOF was found to be 27.56±14.20 nm and in the range of 0.06 nm to 51.80 nm (Figure 3) while the mean calculated crystallite size for Cu‐MOF‐OCs was found to be 19.96±13.16 nm and in the range of 0.98 nm to 37.49 nm (Figure 4) suggesting their existence as nanocomposites [50] . From the previous study, the crystallite size and the degree of crystallinity for OCs were calculated and found to be 12.8 nm and 21.9 % respectively [22] .…”

Effect of calcination temperature induced structural modifications on the photocatalytic efficacy of Fe2O3–ZrO2 nanostructures: mechanochemical synthesis

“…This was due to the NC's increased total surface area, which improved the active sites that interacted with dye. 44 Production of reactive radical rises with the number of active sites on NCs which improves degradation. However, the development of intermediate byproducts was indicated by the decrease in dye degradation at higher doses, specifically at 30 mg.…”