Tuning the surface morphologies of ZnO nanofilms for enhanced sensitivity and selectivity of CO2 gas sensor

Taha, T.A.; Saad, Rana; Zayed, Mohamed; Abukhadra, Mostafa R.; Ahmed, Ashour M.

doi:10.1007/s00339-023-06387-6

Cited by 30 publications

(19 citation statements)

References 73 publications

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“…From these data, a slight increase in CI was due to the small content of g-C 3 N 4 . The full width at half maximum ( β ) of a diffraction peak is inversely proportional to the crystallite size ( D ), as explained by the Scherer equation [ 29 ]:

where the X-ray wavelength ( λ = 1.54056 Å). As seen in Figure 1 b, the peak broadening of PVC/PVP increased with the gradual increase in g-C 3 N 4 content.…”

Section: Resultsmentioning

confidence: 99%

Structural and Optical Characterization of g-C3N4 Nanosheet Integrated PVC/PVP Polymer Nanocomposites

Alshammari

et al. 2023

Polymers

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The present work considers the integration of g-C3N4 nanosheets into PVC/PVP polymer nanocomposites at ratios of 0.0, 0.3, 0.6, and 1.0 wt%. The XRD data scans showed semicrystalline structures for all PVC/PVP/g-C3N4 polymer blend films. The FTIR and Raman measurements revealed intermolecular hydrogen bonding between the g-C3N4 surface and the OH− groups of the PVC/PVP network. ESEM morphology analysis for PVC/PVP/g-C3N4 nanocomposite films displayed homogeneous surface textures. The data of TGA showed improved thermal stability as the decomposition temperature increased from 262 to 276 °C with the content of g-C3N4 (0.0–1.0 wt%). The optical absorbance data for PVC/PVP films improved after the addition of g-C3N4. The optical energy gaps showed compositional dependence on the g-C3N4 content, which changed from 5.23 to 5.34 eV at indirect allowed transitions. The refractive index for these blend films enhanced (1.83–3.96) with the inclusion of g-C3N4. Moreover, the optical susceptibility for these nanocomposite films increased as the content of g-C3N4 changed from 0.0 to 1.0 wt%. Finally, the values of the nonlinear refractive index showed improvement with the increased percentage of g-C3N4. When g-C3N4 was added up to 1.0 wt%, the DC conductivity improved from 4.21 × 10−8 to 1.78 x 10−6 S/cm. The outcomes of this study prove the suitable application of PVC/PVP/g-C3N4 in optoelectronic fiber sensors.

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where the X-ray wavelength ( λ = 1.54056 Å). As seen in Figure 1 b, the peak broadening of PVC/PVP increased with the gradual increase in g-C 3 N 4 content.…”

Section: Resultsmentioning

confidence: 99%

Structural and Optical Characterization of g-C3N4 Nanosheet Integrated PVC/PVP Polymer Nanocomposites

Alshammari

et al. 2023

Polymers

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“…Among these nanofillers, inorganic metals and metal oxides, such as zinc oxide (ZnO) and titanium dioxide (TiO 2 ), have emerged as prominent candidates, owing to their remarkable electrical, optical, optoelectric, and photochemical characteristics 6,7 . It could be easily grown by inexpensive methods to various nanostructured morphologies 8 . All of these potential applications have sparked enormous curiosity about ZnO and TiO 2 nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

“…6,7 It could be easily grown by inexpensive methods to various nanostructured morphologies. 8 All of these potential applications have sparked enormous curiosity about ZnO and TiO 2 nanoparticles. Metallic nanoparticles integrated with conjugated polymers form functional nanocomposites, which enhance thermal stability 9 and electrochemical, 10 catalytic, 11 magnetic, mechanical, and optical properties.…”

Section: Introductionmentioning

confidence: 99%

A comparative analysis of photocatalytic applications using poly[(vanillin‐co‐pyrrole)]/ZnO and TiO₂‐based semiconductor under natural sunlight irradiation

Lahouel

Mekidiche

Slimane

et al. 2023

J of Applied Polymer Sci

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This study presents an experimental investigation with a comparative analysis on the photocatalytic activity of two composites, namely poly(vanillin‐co‐pyrrole)/ZnO and poly(vanillin‐co‐pyrrole)/TiO2, for the degradation of methylene blue (MB) dye under simulated solar irradiation. Conductive polymers, specifically poly(vanillin‐co‐pyrrole) (PPHMB) and its derivatives, were employed as photosensitizers to enhance the photocatalytic activity of ZnO and TiO2 under solar irradiation. PPHMB was synthesized using the cationic polycondensation method, while the PPHMB/ZnO and PPHMB/TiO2 composites were prepared through the co‐precipitation method. The prepared composites exhibited superior photocatalytic activity compared to bare ZnO and TiO2 under solar irradiation for the degradation of MB dye. Extensive characterization techniques, including Fourier‐transform infrared, x‐ray diffraction, thermogravimetric analysis, and optical analysis, were employed to investigate the properties of the composites. Various influential operational parameters such as initial dye concentration, irradiation time, and the dosage of PPHMB/ZnO and PPHMB/TiO2 composites were systematically studied to evaluate their effects on photocatalytic degradation. The optical density of dye degradation was quantified using a UV–Visible spectrophotometer, while the repeatability of the photocatalytic activity was rigorously assessed.

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“…Increasing CO 2 concentrations in the atmosphere are causing the global temperature to rise, leading to severe weather conditions such as wildfires, storms, floods, droughts, and heat waves that cause significant damage to lives and infrastructure. 5…”

Section: Introductionmentioning

confidence: 99%

Cobalt-doped praseodymium ortho ferrite as a promising nanomaterial for carbon dioxide gas sensing

Bharati,

Tiwari,

Singh

et al. 2023

J. Mater. Chem. C

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Tuning the surface morphologies of ZnO nanofilms for enhanced sensitivity and selectivity of CO2 gas sensor

Cited by 30 publications

References 73 publications

Structural and Optical Characterization of g-C3N4 Nanosheet Integrated PVC/PVP Polymer Nanocomposites

Structural and Optical Characterization of g-C3N4 Nanosheet Integrated PVC/PVP Polymer Nanocomposites

A comparative analysis of photocatalytic applications using poly[(vanillin‐co‐pyrrole)]/ZnO and TiO₂‐based semiconductor under natural sunlight irradiation

Cobalt-doped praseodymium ortho ferrite as a promising nanomaterial for carbon dioxide gas sensing

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Tuning the surface morphologies of ZnO nanofilms for enhanced sensitivity and selectivity of CO2 gas sensor

Cited by 30 publications

References 73 publications

Structural and Optical Characterization of g-C3N4 Nanosheet Integrated PVC/PVP Polymer Nanocomposites

Structural and Optical Characterization of g-C3N4 Nanosheet Integrated PVC/PVP Polymer Nanocomposites

A comparative analysis of photocatalytic applications using poly[(vanillin‐co‐pyrrole)]/ZnO and TiO2‐based semiconductor under natural sunlight irradiation

Cobalt-doped praseodymium ortho ferrite as a promising nanomaterial for carbon dioxide gas sensing

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A comparative analysis of photocatalytic applications using poly[(vanillin‐co‐pyrrole)]/ZnO and TiO₂‐based semiconductor under natural sunlight irradiation