Applications of graphene-based tungsten oxide nanocomposites: a review

Nisa, Mehr-Un; Nadeem, Nimra; Yaseen, Muhammad; Iqbal, Javed; Zahid, Muhammad; Abbas, Qamar; Mustafa, Ghulam; Shahid, Imran

doi:10.1007/s40097-021-00464-z

Cited by 16 publications

(5 citation statements)

References 256 publications

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“…Since its discovery, graphene has seen an overwhelming response from scientists working in diverse research areas such as engineering, energy storage/management, medicine, electronics, material science, and many other disciplines. Graphene, graphene oxide, reduced graphene oxides, and its composites have been widely adopted as active materials in a wide range of applications including electrochemical energy-storage devices (EESDs) such as supercapacitors and electrochemical batteries [ 116 , 117 , 118 ]. Thanks to their superior characteristics such as excellent thermal, electrical, mechanical, and optical properties, graphene-based materials have also been widely used in electronic applications.…”

Section: Applications Of Graphenementioning

confidence: 99%

Graphene Synthesis Techniques and Environmental Applications

Abbas

Shinde²,

Abdelkareem³

et al. 2022

Materials

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Graphene is fundamentally a two-dimensional material with extraordinary optical, thermal, mechanical, and electrical characteristics. It has a versatile surface chemistry and large surface area. It is a carbon nanomaterial, which comprises sp2 hybridized carbon atoms placed in a hexagonal lattice with one-atom thickness, giving it a two-dimensional structure. A large number of synthesis techniques including epitaxial growth, liquid phase exfoliation, electrochemical exfoliation, mechanical exfoliation, and chemical vapor deposition are used for the synthesis of graphene. Graphene prepared using different techniques can have a number of benefits and deficiencies depending on its application. This study provides a summary of graphene preparation techniques and critically assesses the use of graphene, its derivates, and composites in environmental applications. These applications include the use of graphene as membrane material for the detoxication and purification of water, active material for gas sensing, heavy metal ions detection, and CO2 conversion. Furthermore, a trend analysis of both synthesis techniques and environmental applications of graphene has been performed by extracting and analyzing Scopus data from the past ten years. Finally, conclusions and outlook are provided to address the residual challenges related to the synthesis of the material and its use for environmental applications.

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Section: Applications Of Graphenementioning

confidence: 99%

Graphene Synthesis Techniques and Environmental Applications

Abbas

Shinde²,

Abdelkareem³

et al. 2022

Materials

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“…The vast range of uses for tungsten oxides may be attributed to their favourable electrical characteristics. These qualities render them appropriate for electrochromic devices, photochromic materials, photocatalysts, and gas sensors [28,29].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Study the Properties of PVDF/PEO/WO2 Hybrid Nanocomposite Thin Films Prepared by a Spin Coating Method

Bardan,

Abbas

2024

IJP

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In this work, using the spin coating method to create polyvinylidene fluoride (PVDF)/polyethylene oxide (PEO) thin films, the effects of nano-tungsten oxide (WO2) doping were investigated. The novelty of this research lies in its investigation of varying weight concentrations of WO2 nanoparticles (NPs) within the composite films. Comprehensive characterization techniques were employed, including structural analysis via X-ray diffraction (XRD), which revealed a clear and prominent peak in the XRD of the PVDF/PEO films, and the films' polycrystalline nature with tetragonal structures. The grain size was noted to increase with higher WO2 NPs doping. Field emission scanning electron microscopy (FE-SEM) showed hexagonal-like α-phase PVDF crystals and uniform distribution of WO2 NPs. Furthermore, Fourier-transform infrared spectroscopy (FTIR) confirmed the characteristics of PVDF/PEO and identified specific doping compounds, confirming successful incorporation. The optical transmittance spectra unveiled the films' optical band gap energy, optical transition types, and absorption characteristics, where novelty emerged as the band gap energy significantly increased from 3.0 eV to 3.64 eV with an increased WO2 NPs weight doping percentage, signifying profound electronic structure modifications and potential applications in optoelectronics and sensors.

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“…Similarly, it has been observed that acquiring the large surface area of graphene or graphene-containing composite structures into PVA increases the possibility of charge carrier generation and, thus, photoelectric performance. , The superior mechanical and electrical properties of graphene obtained experimentally at the beginning of the 21st century are indisputably the focus of intense interest in many researchers today. Its high thermal and electrical conductivity, unique elasticity, high fracture strength, and extensive surface area per weight are clearly some of the main reasons it is frequently used in many electronic or optoelectronic devices, either as a monolayer or in combination with different compounds/structures. − The exceptional photosensing capabilities of graphene are a crucial subject in scientific research due to their ability to produce hot electrons, leading to photocurrents in response to light. This field of study continues to be momentous.…”

Section: Introductionmentioning

confidence: 99%

The Electrical and Photodetector Characteristics of the Graphene:PVA/p-Si Schottky Structures Depending on Illumination Intensities

Ulusoy,

Koçyiğit,

Tataroğlu

et al. 2024

ACS Omega

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Five samples were fabricated to obtain a diode with a PVA interface, both with and without graphene doping at different rates with high rectification in the dark. The electrospinning method was employed to apply the doped and undoped solutions, creating the interlayers. Since the diode with a 1 wt % graphene-doped PVA interlayer outperformed the other samples, the main electrical and photodetector characteristics of this structure were investigated. The electrical parameters of the diode were probed by the TE, Norde, and Cheung methods, and the parameters (n and ϕ B ) acquired by both approaches were significantly influenced by illumination and voltages. The interface/surface state intensity values (N ss ) were also calculated in the dark and under each illumination as a function of the band/energy gap depth (E ss −E v ). The time-dependent steady-state conditions and rise-decay behavior of the photocurrents during illumination were also investigated. Due to the high photocurrent values, the photosensitivity at zero bias is approximately 1.4 × 10 4 at 100 mW cm −2 . The responsivity and detectivity values appear to be altered significantly with changes in the illumination and voltage. Additionally, a double logarithmic plot of I ph vs P reveals good linearity with slope values ranging from 0.5 to 1.

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Applications of graphene-based tungsten oxide nanocomposites: a review

Cited by 16 publications

References 256 publications

Graphene Synthesis Techniques and Environmental Applications

Graphene Synthesis Techniques and Environmental Applications

Preparation and Study the Properties of PVDF/PEO/WO2 Hybrid Nanocomposite Thin Films Prepared by a Spin Coating Method

The Electrical and Photodetector Characteristics of the Graphene:PVA/p-Si Schottky Structures Depending on Illumination Intensities

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