ITO/Poly-3-Methylaniline/Au Electrode for Electrochemical Water Splitting and Dye Removal

Abdelazeez, Ahmed Adel A.; El-Fatah, Gehad Abd; Shaban, Mohamed; Ahmed, Ashour M.; Rabia, Mohamed

doi:10.1149/2162-8777/ac3d1a

Cited by 11 publications

(13 citation statements)

References 49 publications

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“…The produced J ph values at 1.0 V under different monochromatic light are shown in Figure 6 b. The decreasing of the J ph values with increasing of the wavelengths matches well with the optical absorption curve for the composite as mentioned before in Figure 3 c. The high J ph values in the blue side are related to the high light frequency with high energy that causes electrons to transfer to the conducting band that appears as J ph values [ 37 ].…”

Section: Resultssupporting

confidence: 73%

“…The chopped current is repeated with high reproducibility, this indicates the high stability of the electrode for a long time [ 34 , 35 , 36 ]. This is related to the high stability of PANI chains, in which PANI is not dissolved in almost all the solvents [ 37 ]. The very small dark current (J d ) (almost zero) may indicate the full inhibition of the prepared electrode under dark conditions [ 38 , 39 , 40 ].…”

Section: Resultsmentioning

confidence: 99%

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Conversion of Sewage Water into H2 Gas Fuel Using Hexagonal Nanosheets of the Polyaniline-Assisted Deposition of PbI2 as a Nanocomposite Photocathode with the Theoretical Qualitative Ab-Initio Calculation of the H2O Splitting

et al. 2022

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This study is very promising for providing a renewable enrgy (H2 gas fuel) under the elctrochemical splitting of the wastwater (sewage water). This study has double benefits: hydrogen generation and contaminations removel. This study is carried out on sewage water, third stage treated, from Beni-Suef city, Egypt. Antimony tin oxide (ATO)/polyaniline (PANI)/PbI2 photoelectrode is prepared through the in situ oxidative polymerization of PANI on ATO, then PANI is used as an assistant for PbI2 deposition using the ionic adsorption deposition method. The chemical structural, morphological, electrical, and optical properties of the composite are confirmed using different analytical tools such as X-ray diffreaction (XRD), scanning electron microscope (SEM), transmision electron microscope (TEM), Fourier-transform infrared spectroscopy (FTIR), and UV-Vis spectroscopy. The prepared PbI2 inside the composite has a crystal size of 33 nm (according to the peak at 12.8°) through the XRD analyses device. SEM and TEM confirm the hexagonal PbI2 sheets embedded on the PANI nanopores surface. Moreover, the bandgap values are enhanced very much after the composite formation, in which the bandgap values for PANI and PANI/PbI2 are 3 and 2.51 eV, respectively. The application of ATO/PANI/PbI2 nanocomposite electrode for sewage splitting and H2 generation is carried out through a three-electrode cell. The measurements carreid out using the electrocehical worksattion under th Xenon lamp (100 mW.cm−2). The produced current density (Jph) is 0.095 mA.cm−2 at 100 mW.cm−2 light illumination. The photoelectrode has high reproducibility and stability, in which and the number of H2 moles is 6 µmole.h−1.cm−1. The photoelectrode response to different monochromatic light, in which the produced Jph decreases from 0.077 to 0.072 mA.cm−2 with decreasing of the wavelengths from 390 to 636 nm, respectively. These values confirms the high response of the ATO/PANI/PbI2 nanocomposite electrode for the light illuminaton and hydrogen genration under broad light region. The thermodynamic parameters: activation energy (Ea), enthalpy (ΔH*), and entropy (ΔS*) values are 7.33 kJ/mol, −4.7 kJ/mol, and 203.3 J/mol.K, respectively. The small values of ΔS* relted to the high sesnivity of the prepared elctrode for the water splitting and then the hydrogen gneration. Finally, a theoretical study was mentioned for calculation geometry, electrochemical, and thermochemistry properties of the polyaniline/PbI2 nanocomposite as compared with that for the polyaniline.

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Section: Resultssupporting

confidence: 73%

Section: Resultsmentioning

confidence: 99%

Conversion of Sewage Water into H2 Gas Fuel Using Hexagonal Nanosheets of the Polyaniline-Assisted Deposition of PbI2 as a Nanocomposite Photocathode with the Theoretical Qualitative Ab-Initio Calculation of the H2O Splitting

et al. 2022

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“…The smooth increase in the J ph values with the applied potential confirms the presence of the Schottky 44 due to the electron transfer between the roll-GO and PMT surface. Although the presence of this depletion layer, the electron transfer occurs easily, and the electrons can reach the water molecules for continuous splitting steps for hydrogen generation.…”

Section: Photoelectrochemical Hydrogen Generationmentioning

confidence: 59%

“…These great changes under the different wavelengths confirm the high sensitivity of the prepared electrode to the light photons. The high J ph values at 390 nm are related to the high light frequency in this region that causes electron transfer easily, 44 while the low J ph value at 636 nm is related to the low light energy and frequency. These J ph values matched well with the absorption curve The effect of temperature from 20 C to 60 C on the photoelectrode, PMT/roll-GO, is shown in Figure 8A.…”

Section: Photoelectrochemical Hydrogen Generationmentioning

confidence: 99%

Poly(m‐toluidine)/rolled graphene oxide nanocomposite photocathode for hydrogen generation from wastewater

Rabia

Hadia

Farid

et al. 2022

Intl J of Energy Research

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This study provides hydrogen gas fuel as a renewable energy source. The production of H 2 was carried out through the photocatalytic decomposition of sewage water using highly efficient poly(m-toluidine) (PMT)/rolled graphene oxide (roll-GO) as photoelectrode. The preparation of PMT thin film was carried out on glass using the in situ electropolymerization reaction from an acid medium. Then, the roll-GO was deposited on this thin film using the casting method from the GO solution. The full characteristic analyses Fouriertransform infrared, X-ray diffraction, scanning electron microscope, transmitted electron microscope, and UV-Vis spectroscopy confirmed the chemical structural, morphological, and optical properties of the prepared nanomaterials. The morphology characteristic confirmed the formation of nanopores PMT, rolled GO, and rolled porous nanocomposite. The bandgap values for PMT, roll-GO, and PMT/roll-GO nanomaterials were 2.38, 2.67, and 1.65 eV, respectively. The hydrogen generation was carried out through the photoelectrode glass/PMT/roll-GO with a current density (J ph ) value of 0.08 mA.cm À2 at +1 V, with hydrogen moles of 10 μmole/h.cm À2 . The J ph values changed from 0.078 to 0.053 mA.cm À2 with changing the monochromatic light wavelengths from 390 to 636 nm, respectively. Moreover, the J ph values increased from 0.078 to 0.295 mA.cm À2 which is followed by an increase in the temperature from 20 C to 60 C, respectively. The thermodynamic parameters were calculated, in which the Ea, ΔS*, and ΔH* values were

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“…The photocatalysts applied for H 2 generation reaction must be semiconducting materials such as metal oxides, sulfides, nitrides, or organic [8,9]. Metal oxides have many benefits that qualified them to be ideal photocatalytic materials for H 2 production such as low cost, stability, and easy preparation [10,11]. There are some methods for enhancing the photocatalytic activity such as increasing the surface area (nanofibers, nanowires, and nanotubes) [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Converting Sewage Water into H2 Fuel Gas Using Cu/CuO Nanoporous Photocatalytic Electrodes

et al. 2022

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This work reports on H2 fuel generation from sewage water using Cu/CuO nanoporous (NP) electrodes. This is a novel concept for converting contaminated water into H2 fuel. The preparation of Cu/CuO NP was achieved using a simple thermal combustion process of Cu metallic foil at 550 °C for 1 h. The Cu/CuO surface consists of island-like structures, with an inter-distance of 100 nm. Each island has a highly porous surface with a pore diameter of about 250 nm. X-ray diffraction (XRD) confirmed the formation of monoclinic Cu/CuO NP material with a crystallite size of 89 nm. The prepared Cu/CuO photoelectrode was applied for H2 generation from sewage water achieving an incident to photon conversion efficiency (IPCE) of 14.6%. Further, the effects of light intensity and wavelength on the photoelectrode performance were assessed. The current density (Jph) value increased from 2.17 to 4.7 mA·cm−2 upon raising the light power density from 50 to 100 mW·cm−2. Moreover, the enthalpy (ΔH*) and entropy (ΔS*) values of Cu/CuO electrode were determined as 9.519 KJ mol−1 and 180.4 JK−1·mol−1, respectively. The results obtained in the present study are very promising for solving the problem of energy in far regions by converting sewage water to H2 fuel.

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ITO/Poly-3-Methylaniline/Au Electrode for Electrochemical Water Splitting and Dye Removal

Cited by 11 publications

References 49 publications

Conversion of Sewage Water into H2 Gas Fuel Using Hexagonal Nanosheets of the Polyaniline-Assisted Deposition of PbI2 as a Nanocomposite Photocathode with the Theoretical Qualitative Ab-Initio Calculation of the H2O Splitting

Conversion of Sewage Water into H2 Gas Fuel Using Hexagonal Nanosheets of the Polyaniline-Assisted Deposition of PbI2 as a Nanocomposite Photocathode with the Theoretical Qualitative Ab-Initio Calculation of the H2O Splitting

Poly(m‐toluidine)/rolled graphene oxide nanocomposite photocathode for hydrogen generation from wastewater

Converting Sewage Water into H2 Fuel Gas Using Cu/CuO Nanoporous Photocatalytic Electrodes

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