CuO/polypyrrole nanocomposites as a marker of toxic lead ions for ecological remediation in contrast with CuO and polypyrrole

Radhakrishnan, Asha; Rejani, P.; Beena, B.

doi:10.1515/mgmc-2015-0017

Cited by 12 publications

(6 citation statements)

References 10 publications

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“…Furthermore, the high compatibility, long-term stability, and high electrical conductivity of PPy increases conductivity and electron mobility in H 2 O 2 reduction [13,14]. Due to the many polyfunctional groups that are present on their surface, conducting polymers can take up heavy metal ions [15]. Therefore, the creation of an adsorbent with polyfunctional groups and a greater surface area is most challenging work of polymer research [16].…”

Section: Introductionmentioning

confidence: 99%

Boost the photocatalytic hydrogen production of the nanocomposites conducting polypyrrole modified with metal oxide (CuO)

Atta,

Abdeltwab,

Negm

et al. 2023

Phys. Scr.

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This study explores the use of a PPy/CuO nanocomposite film for photocatalytic hydrogen production from wastewater, which is a significant avenue for solar energy applications. The photocatalyst is prepared using a simple in-situ polymerization method on a glass substrate, and is found to exhibit high photocatalytic H2 evolution activity without the need for any co-catalyst. The structure of the PPy and CuO components is confirmed through XRD, TEM, FTIR and XPS analyses. The SEM indicates that CuO nanoparticles cause a homogenous PPy morphology due to the reduction of the accumulation by incorporation of CuO in PPy. The composite is found to have optical absorption spectra covering the UV, Vis, and near IR regions, with a band gap of 1.92 eV making it suitable as a photoelectrode for hydrogen production. The effect of light/dark, on/off chopped light, and monochromatic wavelengths on the photocatalytic activity is studied, and the electrode is found to exhibit a strong response to light under different monochromatic wavelengths that match its optical absorbance behavior. The photocurrent density values obtained are 3.7, 3.4, 2.9, and 0.45 µA.cm-2 under 340, 440, 540, and 730 nm, respectively. The study is low-cost and holds promise for the production of hydrogen gas from wastewater.

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Section: Introductionmentioning

confidence: 99%

Boost the photocatalytic hydrogen production of the nanocomposites conducting polypyrrole modified with metal oxide (CuO)

Atta,

Abdeltwab,

Negm

et al. 2023

Phys. Scr.

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show abstract

“…The synthesized composite's purity was checked by different analytical techniques, mainly FTIR, powder XRD, and finally EDX. 53 …”

Section: Materials and Methodsmentioning

confidence: 99%

“…Here, FeCl 3 acts as an oxidizing agent and undergoes a free radical reaction for further polymerization. The synthesized composite's purity was checked by different analytical techniques, mainly FTIR, powder XRD, and finally EDX …”

Section: Materials and Methodsmentioning

confidence: 99%

One-Pot Synthesis of Polyoxometalate Decorated Polyindole for Energy Storage Supercapacitors

et al. 2021

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The demand for energy storage supercapacitor devices has increased interest in completing all innovative technologies and renewable energy requirements. Here, we report a simple method of two polyoxomolybdate (H 4 [PVMo 11 O 40 ] and H 5 [PV 2 Mo 10 O 40 ]) doped polyindole (PIn) composites for electrochemical supercapacitors. The interactions between polyoxomolybdates and PIn were measured by Fourier transform infrared spectroscopy (FTIR), and powder XRD, and stability was measured by thermogravimetry. The field emission scanning microscopy (FESEM) was employed to investigate the morphology of the materials. The electrochemical measurements show that the PIn/PV 2 Mo 10 electrode exhibits a higher capacitance of 198.09 F/g with an energy density of 10.19 Wh/kg and a power density of 198.54 W/kg at 0.2 A/g current density than the PIn/PVMo 11 electrode. Both electrodes show a pseudocapacitance behavior due to the doping of redox-active polyoxomolybdates on the PIn surface and enhance the electrochemical properties. The electrodes’ capacitive nature was measured by electrochemical impedance spectroscopy (EIS), which shows that the PIn/PVMo 11 electrode has a resistive nature within the electrode–electrode interface. Moreover, the PIn/PV 2 Mo 10 electrode offers remarkable cycle stability, retaining ∼84% of its capacitance after 10,000 cycles (∼83% for the PIn/PVMo 11 electrode). The higher specific capacitance, faster charge/discharge rates, and higher cycle stability make them promising electrodes in supercapacitors.

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“…Significant consequences are the lack of potable water, domestic use, agriculture, farming, etc. [ 3 ]. Methylene blue (MB) is a cationic thiazine dye, which forms a blue water solution (see Scheme 1 ).…”

Section: Introductionmentioning

confidence: 99%

The Photocatalytic Performance of Nd2O3 Doped CuO Nanoparticles with Enhanced Methylene Blue Degradation: Synthesis, Characterization and Comparative Study

et al. 2022

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The growth of the textile industry results in a massive accumulation of dyes on water. This enormous rise in pigments is the primary source of water pollution, affecting the aquatic lives and our ecosystem balance. This study aims to notify the fabrication of neodymium incorporated copper oxide (Nd2O3 doped CuO) nanoparticles by combustion method for effective degradation of dye, methylene blue (MB). X-ray diffraction (XRD), Field emission Scanning electron microscopy (FESEM), Zeta potential have been applied for characterization. Photocatalyst validity has been evaluated for methylene blue degradation (MB). Test conditions such as time of contact, H2O2, pH, and photo-Fenton have been modified to identify optimal degradation conditions. Noticeably, 7.5% Nd2O3 doped CuO nanoparticle demonstrated the highest photocatalytic efficiency, up to 90.8% in 80 min, with a 0.0227 min−1 degradation rate. However, the photocatalytic efficiency at pH 10 becomes 99% with a rate constant of 0.082 min−1. Cyclic experiments showed the Nd2O3 doped CuO nanoparticle’s stability over repeated use. Scavenge hydroxyl radical species responsible for degradation using 7.5% Nd2O3 doped CuO nanoparticles have been investigated under visible irradiation.

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CuO/polypyrrole nanocomposites as a marker of toxic lead ions for ecological remediation in contrast with CuO and polypyrrole

Cited by 12 publications

References 10 publications

Boost the photocatalytic hydrogen production of the nanocomposites conducting polypyrrole modified with metal oxide (CuO)

Boost the photocatalytic hydrogen production of the nanocomposites conducting polypyrrole modified with metal oxide (CuO)

One-Pot Synthesis of Polyoxometalate Decorated Polyindole for Energy Storage Supercapacitors

The Photocatalytic Performance of Nd2O3 Doped CuO Nanoparticles with Enhanced Methylene Blue Degradation: Synthesis, Characterization and Comparative Study

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