scholarly journals Congo Red Azo Dye Removal and Study of Its Kinetics by Aloe Vera Mediated Copper Oxide Nanoparticles

2019 ◽  
Vol 19 (3) ◽  
pp. 626 ◽  
Author(s):  
Madiha Batool ◽  
Muhammad Zahid Qureshi ◽  
Farwa Hashmi ◽  
Nida Mehboob ◽  
Abdul Salam Shah
Keyword(s):  
Copper Oxide ◽  
Copper Nanoparticles ◽  
Congo Red ◽  
Dye Removal ◽  
Aloe Vera ◽  
Copper Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Time Interval ◽  
Efficient Removal ◽  
Environment Friendly

Nanotechnology is generating interest of researchers toward cost-free and environment-friendly biosynthesis of nanoparticles. In this research, biosynthesis of stable copper nanoparticles has been done by using aloe vera leaves extract which has been prepared in de-ionized water. The aim of this study is the tracing of an object by green synthesis of copper oxide nanoparticles with the interaction of leaves extract and copper salt and its dye removal efficiency. The results have confirmed the efficient removal of Congo red (CR) dye using copper oxide nanoparticles. Furthermore, we have examined the effect of variables like concentration, time, pH, and adsorbent dosage. We have observed maximum 1.1 mg/g dye removal at 10 min time interval, pH 2, and 5 mg/g nanoparticles. The shape of the copper nanoparticles was spherical, and their range of grain was 80–120 nm. The EDX of synthesized nanoparticles showed copper 38% and 65% oxygen. UV spectrophotometer analysis confirms peak of the copper nanoparticles between 200–600 nm.

scholarly journals Adsorption of Congo Red (Acid Red 28) Azodye on Biosynthesized Copper Oxide Nanoparticles

2019 ◽  
Vol 31 (3) ◽  
pp. 707-713 ◽  
Author(s):  
Madiha Batool ◽  
Muhammad Zahid Qureshi ◽  
Farwa Hashmi ◽  
Nida Mehboob ◽  
Walid M. Daoush
Keyword(s):  
Copper Oxide ◽  
Congo Red ◽  
Leaf Extract ◽  
Dye Removal ◽  
Copper Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Average Particle ◽  
Aloe Barbadensis ◽  
Congo Red Dye ◽  
Red Dye

A green synthesis of copper oxide nanoparticles and its removal efficiency of azodye were studied. Biosynthesis of stable copper oxide nanoparticles were preformed using Aloe barbadensis leaf extract as a size and shape-directing agent for preparing of spherical copper oxide nanoparticles by calcination at 400 °C. The leaf extract of Aloe barbadensis was prepared in deionized water. The produced copper particles were calcined at 400 °C to produce copper oxide nanoparticles. The characterization of copper oxide nanoparticles was performed by XRD, SEM, FTIR, UV spectroscopy. The XRD analysis showed that the average particle size was between 5-30 nm. The shape of the copper oxide nanoparticles was spherical and cubic. EDX of the synthesized nanoparticles showed the composition consists of 68 % copper. The UV-visible spectrum analysis confirms an absorption peak at 200-400 nm of the produced CuO nanoparticles. The FTIR analysis of the copper oxide particles indicate the presence of the organometallic Cu-O bond between Cu and O. The obtained copper oxide was used as a removing agent of Congo red dye. The effect of variables like concentration, time, pH, adsorbent dosage were studied. It was observed from the results that the maximum dye removal occurs at pH of 4, the concentration of nanoparticles was 1 mg/L and the maximum time for dye removal was 120 min. The Langmuir isotherm model was calculated to study the adsorption efficiency of the Congo red dye on the produced copper oxide nanoparticles. The kinetics of pseudo second order is followed by adsorption. The calculated sum of square was 0.012 and r2 = 0.98. it was observed that the model fit the best and straight line with r2 value of 0.991 and probability value of 1.6E-5. The nanoparticles remove 70 % of the Congo red dye from its solution. This showed that the copper oxide nanoparticles has efficient capacity of azodye degradation.

Green synthesis of copper oxide nanoparticles using aloe vera extract

2020 ◽  
Vol 3 (3) ◽  
Author(s):  
Hemalatha D ◽  
Saraswath S
Keyword(s):  
Copper Oxide ◽  
Biomedical Application ◽  
Aloe Vera ◽  
Copper Oxide Nanoparticles ◽  
Klebsiella Pneumonia ◽  
Oxide Nanoparticles ◽  
Cupric Sulfate ◽  
X Ray Diffraction ◽  
Fouriertransform Infrared Spectroscopy ◽  
Effective Use

In material science, green method for synthesis of nanomaterials is feasible, cheaper and eco-friendly protocol. To accomplish this phenomenon, present study was aimed to synthesize Copper oxide nanoparticles using leaf extract of Aloevera with two different precursors CuCl2.2H2O (Cupric chloride) and CuSo4.5H2O (Cupric sulfate). The extraction of Aloevera is employed as reducing and stabilizing agent for this synthesis.Copper oxide Nanoparticles is effective use of biomedical application due to their antibacterial function. The synthesized Copper oxide nanoparticles were characterized by X-Ray Diffraction Spectroscopy (XRD), Energy Dispersive Spectroscopy (EDX), FourierTransform Infrared Spectroscopy (FT- IR) and Scanning Electron Microscope(SEM). XRD studies reveal the crystallographic nature of Copper oxide nanoparticles. Furthermore the Copper oxide nanoparticles have good Antibacterial activity against both gram negative (E.Coli, Klebsiella pneumonia) and gram positive (Bacillus cereus, Staphylococcus aureus)bacteria.

scholarly journals Cytotoxic Effects of Combined Walnut Shell-Extracted Copper Oxide: Nanoparticles and Hydroalcoholic Extracts of Aloe vera Against Human Leukemic Cell Line

2021 ◽  
Vol 23 (1) ◽  
Author(s):  
Seyyed Meysam Abtahi Froushani ◽  
Asghar Zamani ◽  
Ardeshir Abbasi
Keyword(s):  
Copper Oxide ◽  
Cell Line ◽  
K562 Cell ◽  
Aloe Vera ◽  
K562 Cells ◽  
Copper Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Cytotoxic Effects ◽  
Cuo Nps ◽  
Ic50 Value

Background: Anticancer effects of Aloe vera and copper oxide nanoparticles (CuO NPs) have been separately determined. Hence, we investigated whether combining the hydroalcoholic extract of Aloe vera and green CuO NPs produced by eco-friendly and walnut shells could provide synergistic cytotoxicity against K562 cell lines. Methods: The K562 cells and PBMCs (1 × 105 cells/100 μL/well) were treated with serial dilution of Aloe vera extract (0, 20, 40, 60, 80, 160 and 320 mg/ mL) and green CuO NPs (0, 50, 100, 200 and 400 μM). After incubation for 24h, the viability of cells was determined by MTT assay. Cells were exposed to a mixture of Aloe vera extract and Green CuO NPs at the half-maximal inhibitory concentration (IC50) to assess the inhibitory effects. Results: The extract of Aloe vera and green CuO NPs had cytotoxic effects against K562 (cell-line in a dose-dependent manner). Unlike Aloe vera, the marginal safety of green CuO NPs was low. There were no significant dissimilarities in the IC50 value of the green CuO NPs against K562 cells compared to the IC50 value of the Green CuO NPs against PBMCs (175 ± 9 μM vs. 186.89 ± 8.88 μM). Combined treatment with minimal cytotoxic doses provided synergistic benefits and caused more cytotoxicity in K562 cells toward their separated treatment. Meanwhile, this combined concentration enhanced the cell-survival, not the cytotoxicity in PBMC treated cells. Conclusions: The combinative concentration of Aloe vera and green CuO may be considered alternative medicine later.

Production of Antimicrobial Textiles by Using Copper Oxide Nanoparticles

2018 ◽  
Vol 9 (08) ◽  
pp. 20195-20202 ◽  
Author(s):  
Redwanul Hasan
Keyword(s):  
Antibacterial Activity ◽  
Copper Oxide ◽  
Copper Nanoparticles ◽  
Disease Transmission ◽  
Copper Oxide Nanoparticles ◽  
Sem Analysis ◽  
Woven Fabric ◽  
Noble Metal Nanoparticles ◽  
Oxide Nanoparticles ◽  
Antimicrobial Textiles

The application of nanoscale materials and structures, usually ranging from 1 to 100 nanometers (nm), is an emerging area of nanoscience and nanotechnology. Synthesis of noble metal nanoparticles for applications such as catalysis, electronics, textiles, environmental protection, and biotechnology is an area of constant interest. Recently, an awareness of general sanitation, contact disease transmission, and personal protection has led to the development of antimicrobial textiles. The development of antimicrobial cotton fabrics using Copper oxide nanoparticles has been investigated in this present work. The Copper nanoparticles were prepared by wet chemical method and were directly applied on to the 100% cotton woven fabric using pad-dry-cure method. The antibacterial activity of the finished fabrics was assessed qualitatively by agar diffusion and parallel streak method, quantitatively by percentage reduction test. The topographical analysis of the treated fabric and untreated fabric were studied and compared. The results show that the finished fabric demonstrated significant antibacterial activity against S. aureus in both qualitative and quantitative tests. The SEM analysis revealed the embedding of Copper nanoparticles in treated fabrics. The wash durability study of the treated fabric was also carried out and found to withstand up to 25 wash cycles.

scholarly journals Comparison of Biodistribution and Biocompatibility of Gelatin-Coated Copper Nanoparticles and Naked Copper Oxide Nanoparticles

2012 ◽  
Vol 10 ◽  
pp. 33-37 ◽  
Author(s):  
Shigeaki Abe ◽  
Nobuki Iwadera ◽  
Takashi Narushima ◽  
Yoshiki Uchida ◽  
Motohiro Uo ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Copper Nanoparticles ◽  
Copper Oxide Nanoparticles ◽  
Oxide Nanoparticles
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