Green Synthesis of Curcumin Conjugated CuO Nanoparticles for Catalytic Reduction of Methylene Blue

Qasem, Mayada; Kurdi, Riham El; Patra, Digambara

doi:10.1002/slct.201904135

Cited by 20 publications

(10 citation statements)

References 33 publications

(45 reference statements)

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“…Indeed, curcumin is one of the greatest nontoxic components, extracted from turmeric Curcuma longa that is developed nowadays to be used as a reducing agent (20,21). It was isolated first by Vogel in1842.…”

Section: Introductionmentioning

confidence: 99%

Curcumin as a novel reducing and stabilizing agent for the green synthesis of metallic nanoparticles

Patra

Kurdi

2021

Green Chemistry Letters and Reviews

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This review expands for the first time the development of curcumin as reducing and stabilizing agent. Curcumin is widely used in food industries, cosmetic domain and the biomedical field. The combination of green synthesis and curcumin to produce nanoparticles has been effective as the amount of toxic waste is highly reduced. Starting with a general introduction about nanoparticles synthesis and curcumin, the use of curcumin as a principal reducing agent and stabilizing compounds in the production of nanoparticles is developed. Consecutively, the preparation of different nanoparticles as gold nanoparticles (Au NPs), silver nanoparticles (Ag NPs), copper nanoparticles (Cu NPs), iron nanoparticles (Fe NPs), and manganese and manganese oxide nanoparticles (Mn NPs, MnO NPs) using curcumin is investigated and elaborated. The mechanism of interaction of curcumin with the different metal has also been developed. A concluding section summarizes the advantages of using curcumin as reducing/ stabilizing agent in nanoparticles formation and their analytical applications.

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Section: Introductionmentioning

confidence: 99%

Curcumin as a novel reducing and stabilizing agent for the green synthesis of metallic nanoparticles

Patra

Kurdi

2021

Green Chemistry Letters and Reviews

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“…Furthermore, the peak at ∼923 cm –1 is assigned to the bending vibration of the C–H group, and the frequency band of ∼842 cm –1 is attributed to the bending vibrations of O–M–O bonds. However, the characteristic peak at a low frequency of ∼668 cm –1 corresponds to the typical Cu–O stretching vibration band …”

Section: Resultsmentioning

confidence: 99%

Exploring Rapid Photocatalytic Degradation of Organic Pollutants with Porous CuO Nanosheets: Synthesis, Dye Removal, and Kinetic Studies at Room Temperature

et al. 2021

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In this work, we report the facile, environmentally friendly, room-temperature (RT) synthesis of porous CuO nanosheets and their application as a photocatalyst to degrade an organic pollutant/food dye using NaBH4 as the reducing agent in an aqueous medium. Ultrahigh-resolution field effect scanning electron microscopy images of CuO displayed a broken nanosheet-like (a length of ∼160 nm, a width of ∼65 nm) morphology, and the lattice strain was estimated to be ∼1.24 × 10–3 using the Williamson–Hall analysis of X-ray diffraction plots. Owing to the strong quantum size confinement effect, CuO nanosheets resulted in an optical energy band gap of ∼1.92 eV, measured using Tauc plots of the ultraviolet–visible (UV–vis) spectrum, resulting in excellent photocatalytic efficiency. The RT synthesized CuO catalyst showed a high Brunauer–Emmet–Teller surface area of 30.88 ± 0.2313 m2/g (a correlation coefficient of 0.99972) with an average Barrett–Joyner–Halenda pore size of ∼20.385 nm. The obtained porous CuO nanosheets exhibited a high crystallinity of 73.5% with a crystallite size of ∼12 nm and was applied as an efficient photocatalyst for degradation of the organic pollutant/food dye, Allura Red AC (AR) dye, as monitored by UV–vis spectrophotometric analysis and evidenced by a color change from red to colorless. From UV–vis spectra, CuO nanosheets exhibited an efficient and ultrafast photocatalytic degradation efficiency of ∼96.99% for the AR dye in an aqueous medium within 6 min at RT. According to the Langmuir–Hinshelwood model, photodegradation reaction kinetics followed a pseudo-first-order reaction with a rate constant of k = 0.524 min–1 and a half-life (t 1/2) of 2.5 min for AR dye degradation in the aqueous medium. The CuO nanosheets showed an outstanding recycling ability for AR degradation and would be highly favorable and an efficient catalyst due to the synergistic effect of high adsorption capability and photodegradation of the food dye.

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“…It can be noted that the presence of CTAB as capping agent on the surface of the formed Cu NPs, was also confirmed by zeta potential analysis (Figure 1). The surface charge of Cu NPs in the presence of CTAB (+2.8 mv) was resulted to the fact that the CTAB molecules containing N + head groups have sited on the outer layer of the Cu NPs 49 . Thus, the created positive surface charge on the Cu NPs by CTAB molecules is caused to facile interaction between the Cu NPS and Th monomers.…”

Section: Resultsmentioning

confidence: 99%

The modified polythiophene‐Cu NPs composites for Pb(II) ions removal from aqueous solution

Karegar

Khodaei

2021

J of Applied Polymer Sci

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The present work describes the use of chemically modified polythiophene with copper nanoparticles and polyvinylpyrolidine‐sulfonic acid (PTh‐PVP‐SA‐Cu) as an adsorbent for the removal of Pb(II) ions from aqueous solution. The synthesized composite, PTh‐PVP‐SACu, was characterized by different techniques including Fourier‐transform infrared spectrometer, scanning electron microscopy, energy dispersive X‐ray spectroscopy (EDX), transmission electron microscopy, X‐ray powder diffraction, thermogravimetric analysis (TGA), and differential scanning calorimetry. This nanocomposite has good conductivity and thermal stability due to the presence of copper nanoparticles. The acidic doping agent, polyvinylpyrolidine‐sulfonic acid, can act as the surfactant and improves the polymerization of thiophene in the aqueous medium. The conductivity of PTh was 0.54 S/cm, while the conductivities of PTh‐Cu with 10 and 20 wt% of PVP‐SA under the same reaction conditions were 2.3 and 2.7 S/cm, respectively. The influence of pH, adsorbent dosage, temperature, contact time, and concentration on the removal of Pb(II) ions was evaluated. The optimum conditions for the removal of Pb(II) ions were 25°C with the adsorbent dosage of 3 g.L−1 at pH = 7. The adsorption capacity was obtained to be 111 mg. g−1. The obtained equilibrium data for PTh‐PVP‐SA‐Cu was fitted well by Langmuir isotherm model indicating that the adsorption process was monolayer adsorption and distribution of adsorption sites on the surface of PTh‐PVP‐SA‐Cu was homogeneous. The maximum monolayer capacity obtained from the Langmuir isotherm was 121.9 mg. g−1 for Pb(II) ions at 45°C. The values of Gibbs free energy (ΔG), entropy change (ΔS) and enthalpy change (ΔH) indicated the feasibility, spontaneity and the endothermic nature of the adsorption process, respectively. The kinetic process followed the pseudo‐second‐order kinetic model. The recyclability studies revealed that PTh‐PVP‐SA‐Cu could be reused for three consecutive cycles.

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Green Synthesis of Curcumin Conjugated CuO Nanoparticles for Catalytic Reduction of Methylene Blue

Cited by 20 publications

References 33 publications

Curcumin as a novel reducing and stabilizing agent for the green synthesis of metallic nanoparticles

Curcumin as a novel reducing and stabilizing agent for the green synthesis of metallic nanoparticles

Exploring Rapid Photocatalytic Degradation of Organic Pollutants with Porous CuO Nanosheets: Synthesis, Dye Removal, and Kinetic Studies at Room Temperature

The modified polythiophene‐Cu NPs composites for Pb(II) ions removal from aqueous solution

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