Testing the photo-electrocatalytic hydrogen production of polypyrrole quantum dot by combining with graphene oxide sheets on glass slide

Hamid, Mostafa M. Abdel; Alruqi, Mansoor; Elsayed, Asmaa M.; Atta, M. M.; Hanafi, H. A.; Rabia, Mohamed

doi:10.1007/s10854-023-10229-9

Cited by 12 publications

(7 citation statements)

References 44 publications

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“…In addition, the bands at 734 and 624 cm −1 for C-H bending and the C-H vibration, respectively. 26 The bending of methylene, vibration of O-CH 2 , and CH 2 rocking were observed at 1456, 1093, and 867 cm −1 , respectively, in the PET spectrum. 27 The symmetric stretch of C-C-H, which comprises the carbon atoms in the aromatic ring, is seen at 1254 cm −1 .…”

Section: Resultsmentioning

confidence: 94%

Characterization, Dielectric Analysis and Thermal Properties of Novel Flexible Polymer Composite Films

Abdeltwab,

Atta,

Al-Yousef

et al. 2024

ECS J. Solid State Sci. Technol.

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The films were characterized by different methods as FTIR, SEM, XRD and TGA to prove the efficient manufacturing of the composite. The dielectric performance measurements were done at frequency of 20 Hz to 6 MHz for the polymer PET and the composite (PPy-Fe2O3)/PET with varying concentrations of Fe2O3. Moreover, to reveal the characteristics of the fabricated composite, the contact angle, the work of adhesion, surface energy of the composite PET/(PPy-Fe2O3) films were considerably determined. The SEM results support the deposition of PPy-Fe2O3 composite on the PET surface. The water contact angle drops from 78.32 o for PET to 40.11o for PET/6%(PPy-Fe2O3), while the dispersive free energy raised from 23.9 mJ/m2 to 43.7 mJ/m2and the polar free energy rises from 8.9 mJ/m2 to 22.3 mJ/m2. The concentration of Fe2O3 increased the surface features of the samples, according to the obtained results. At frequency of 100 Hz, the dielectric constant enhanced from 18 for PET to 923 for the PET/6%(PPy-Fe2O3), and the dielectric loss improved from 24 to 9231, while the energy density improved fromm 7.9x10-5 J/m3 for PET to 408x10-5 J/m3. The TGA results show marginal modifications in thermal stability after deposition the PPy/Fe2O3 on the PET film.

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Section: Resultsmentioning

confidence: 94%

Characterization, Dielectric Analysis and Thermal Properties of Novel Flexible Polymer Composite Films

Abdeltwab,

Atta,

Al-Yousef

et al. 2024

ECS J. Solid State Sci. Technol.

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“…Using the theoretical Tauc equation (Equation (2)) [ 22 , 30 , 31 ], which relates the absorption coefficient of a material to the photon energy, the bandgap energy (E g ) can be demonstrated using α and ν, which is the absorption coefficient and frequency correspondingly ( Figure 1 d): (αhν) 0.5 = A(hν − E g ) …”

Section: Resultsmentioning

confidence: 99%

“…In our photodiode preparation, we utilized a previously prepared thin film of polypyrrole (Ppy) [ 22 ]. This Ppy thin film was deposited as a p-type material.…”

Section: Methodsmentioning

confidence: 99%

Decoration of Poly-3-methyl Aniline with As(III) Oxide and Hydroxide as an Effective Photoelectrode for Electroanalytical Photon Sensing with Photodiode-like Behavior

2023

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This study achieved the decoration of poly-3-methyl aniline (P3MA) with As2O3–As(OH)3 using K2S2O8 and NaAsO2 on the 3-methyl aniline monomer. This resulted in a highly porous nanocomposite polymer composite with wide absorption optical behavior, an average crystalline size of 22 nm, and a 1.73 eV bandgap. The photoelectrode exhibited a great electrical response for electroanalytical applications, such as photon sensing and photodiodes, with a Jph of 0.015 mA/cm2 and Jo of 0.004 mA/cm2. The variable Jph values ranged from 0.015 to 0.010 mA/cm2 under various monochromatic filters from 340 to 730 nm, which demonstrates high sensitivity to wavelengths. Effective photon numbers were calculated to be 8.0 × 1021 and 5.6 × 1021 photons/s for these wavelength values, and the photoresponsivity (R) values were 0.16 and 0.10 mA/W, respectively. These high sensitivities make the nanocomposite material a promising candidate for use in photodetectors and photodiodes, with potential for commercial applications in highly technological systems and devices. Additionally, the material opens up possibilities for the development of photodiodes using n- and p-type materials.

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“…Graphene with a 2D honeycomb structure has stunning features such as optimum transparency and admirable electronic and mechanical properties 8 , 9 . Scientists studied the properties of graphene-based materials, and they found that it is an excellent material for many applications such as bio-sensing 10 , supercapacitors 11 , hydrogen production 12 , ferromagnetic tunneling diodes 13 , molecular drug delivery 14 , polymer nanocomposites 15 , 16 , cancer treatment 17 , and bone tissue engineering 18 . Also, the development of graphene nanomaterials has led to advancements in integrated cancer diagnosis and therapy.…”

Section: Introductionmentioning

confidence: 99%

Gamma radiation assisted green synthesis of hesperidin-reduced graphene oxide nanocomposite targeted JNK/SMAD4/MMP2 signaling pathway

Kodous,

Taha,

El-Maghraby

et al. 2024

Sci Rep

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In this study, a novel method for the fabrication of hesperidin/reduced graphene oxide nanocomposite (RGOH) with the assistance of gamma rays is reported. The different RGOHs were obtained by varying hesperidin concentrations (25, 50, 100, and 200 wt.%) in graphene oxide (GO) solution. Hesperidin concentrations (25, 50, 100, and 200 wt.%) in graphene oxide (GO) were varied to produce the various RGOHs. Upon irradiation with 80 kGy from γ-Ray, the successful reduction of GO occurred in the presence of hesperidin. The reduction process was confirmed by different characterization techniques such as FTIR, XRD, HRTEM, and Raman Spectroscopy. A cytotoxicity study using the MTT method was performed to evaluate the cytotoxic-anticancer effects of arbitrary RGOH on Wi38, CaCo2, and HepG2 cell lines. The assessment of RGOH’s anti-inflammatory activity, including the monitoring of IL-1B and IL-6 activities as well as NF-kB gene expression was done. In addition, the anti-invasive and antimetastatic properties of RGOH, ICAM, and VCAM were assessed. Additionally, the expression of the MMP2-9 gene was quantified. The assessment of apoptotic activity was conducted by the detection of gene expressions related to BCl2 and P53. The documentation of the JNK/SMAD4/MMP2 signaling pathway was ultimately accomplished. The findings of our study indicate that RGOH therapy has significant inhibitory effects on the JNK/SMAD4/MMP2 pathway. This suggests that it could be a potential therapeutic option for cancer.

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Testing the photo-electrocatalytic hydrogen production of polypyrrole quantum dot by combining with graphene oxide sheets on glass slide

Cited by 12 publications

References 44 publications

Characterization, Dielectric Analysis and Thermal Properties of Novel Flexible Polymer Composite Films

Characterization, Dielectric Analysis and Thermal Properties of Novel Flexible Polymer Composite Films

Decoration of Poly-3-methyl Aniline with As(III) Oxide and Hydroxide as an Effective Photoelectrode for Electroanalytical Photon Sensing with Photodiode-like Behavior

Gamma radiation assisted green synthesis of hesperidin-reduced graphene oxide nanocomposite targeted JNK/SMAD4/MMP2 signaling pathway

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