Reduced Graphene Oxide/Zinc Oxide Nanocomposite: From Synthesis to its Application for Wastewater Purification and Antibacterial Activity

Naseem, Taiba; Zain‐ul‐Abdin,; Waseem, Muhammad; Hafeez, Muhammad; Din, Salah Ud; Haq, Sirajul; Mahfoz-ur-Rehman,

doi:10.1007/s10904-020-01529-2

Cited by 34 publications

(6 citation statements)

References 25 publications

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“…This energy allows us to know the elemental composition of the sample. As mentioned, studies of chemical composition are useful to identify different phases in composite characterization, in particular, to identify the presence of ZnO in ZnO-graphene hybrids and to know the relative percentage of each element in the sample being analyzed [94,[124][125][126].…”

Section: Energy Dispersive X-ray (Edx)mentioning

confidence: 99%

Synthesis, Characterization, and Photocatalytic Performance of ZnO–Graphene Nanocomposites: A Review

et al. 2020

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ZnO is an exciting material for photocatalysis applications due to its high activity, easy accessibility of raw materials, low production costs, and nontoxic. Several ZnO nano and microstructures can be obtained, such as nanoparticles, nanorods, micro flowers, microspheres, among others, depending on the preparation method and conditions. ZnO is a wide bandgap semiconductor presenting massive recombination of the generated charge carriers, limiting its photocatalytic efficiency and stability. It is common to mix it with metal, metal oxide, sulfides, polymers, and nanocarbon-based materials to improve its photocatalytic behavior. Therefore, ZnO–nanocarbon composites formation has been a viable alternative that leads to new, more active, and stable photocatalytic systems. Mainly, graphene is a well-known two-dimensional material, which could be an excellent candidate to hybridize with ZnO due to its excellent physical and chemical properties (e.g., high specific surface area, optical transmittance, and thermal conductivity, among others). This review analyses ZnO–graphene nanocomposites’ recent advances, addressing the synthesis methods and the resulting structural, morphological, optical, and electronic properties. Moreover, we examine the ZnO–graphene composites’ role in the photocatalytic degradation of organic/inorganic pollutants.

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Section: Energy Dispersive X-ray (Edx)mentioning

confidence: 99%

Synthesis, Characterization, and Photocatalytic Performance of ZnO–Graphene Nanocomposites: A Review

et al. 2020

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“…Beside the larger agglomerates, some spotted single particles were implanted on the GO surface. The roughness of the graphene sheet was reduced, which might be due to the deposition of AgNPs on the surface of GO (Naseem et al, 2020).…”

Section: Resultslts and Discussionmentioning

confidence: 99%

“…The assay is a widely used method for assessing the viability of cells after exposure to different materials or compounds. In this study, MCF-7 breast cancer cell lines were used to evaluate the cytotoxic potential of the tested materials (Mello et al, 2020;Shah et al, 2021).…”

Section: Mtt Cell Viability Assaymentioning

confidence: 99%

Rocephin‐graphene oxide‐silver nanocomposites: A versatile platform for biomedical applications

Kashif,

Ahmed,

Altaf

et al. 2024

Microscopy Res & Technique

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For many years, the synthesis of graphene oxide (GO) had involved exfoliating graphite flakes, and the methods applied were expensive and time‐consuming. Thus, an attempt had been made to create an inventive, less expensive method for the synthesis of GO using unrefined, raw carbon‐containing material. Modified Hummer's method was used to prepare GO from banana peel. In addition, the metallic silver nanocomposite was also synthesized along with laoding of drug Rocephin where they interact with each other through electrostatic hydrogen bond interaction. The degree of crystallinity and the crystallite size were through x‐ray diffraction (XRD) analysis and the crystallite size of AgNPs was found to be 40.40 nm. The scanning electron microscopy (SEM) analysis shows that the morphology of the GO gradually changes with the addition of AgNPs and Rocephin. A blue shift was seen in the absorbance maxima of the raw carbon upon the conjugation of Rocephin in UV analysis. The Fourier‐transform infrared spectroscopy, and energy dispersive X‐ray (EDX) spectroscopy were used to determine the chemical composition of the samples. Furthermore, a broad biological screening of the synthesized samples had been carried out following the total reducing power (TRP), total antioxidant capacity (TAC), antibacterial, antifungal, MTT (Cytotoxicity of biologically synthesized silver nanoparticles in MDA‐MB‐231 human breast cancer cells) cell viability, brine shrimp lethality, and hemolytic protocols. Significant results were obtained, and the Rocephin‐GO‐AgNPs had depicted promising activity as compared with their counterparts.Research Highlights The GO was prepared from the raw carbon extracted from banana peels and was used as a substrate for the synthesis Graphene oxide silver nanoparticles (GO‐AgNPs) and Rocephin‐loaded graphene oxide silver nanoparticles (Rocephin‐GO‐AgNPs) The structural and compositional analysis of the nanomaterial was carried out, and they were screened for several biomedical applications. The Rocephin‐GO‐AgNPs exhibit the highest activity as compared with their counterparts.

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“…As a comparison study to show the MB dye degradation performance against our results. Photocatalytic activity based on ZnO matrix has been reported specifically for MB removal such as 98.95% hollow ZnO [86], 99% ZnO/CeO 2 [87], and 80% rGO/ZnO [88].…”

Section: Samplementioning

confidence: 99%

Highly ordered structure and susceptibility to light absorption of ZnO/calcium phosphate (5%) to enhance the stability of charge diffusion as a methylene blue bond breaker

Abdullah,

Tahir,

Heryanto

et al. 2024

Phys. Scr.

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The composite Zinc oxide/calcium phosphate was successfully prepared using the sol-gel method. The structural and optical properties are observed by using X-Ray Diffraction and Fourier Transform Infra-Red, respectively. The degradation of MB dye is analyzed by using Ultraviolet-Visible spectrometer. The maximum MB degradation is achieved 92.61± 2.7 % and shows the linear correlation to a high optical longitudinal position and enlarged d spacing. Superior photocatalytic activity is demonstrated by ZnO/CP_240 which has a consistent band gap due to its highly ordered structure and susceptibility to light absorption ability, thus triggering better charge diffusion stability. The empirical findings suggest that the introduction of CP at the atomic level into the crystal lattice of ZnO buffer generates a surplus of oxygen vacancies, thereby diminishing the strength of the MB bonding. This, in turn, facilitates the activation of lattice oxygen.

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Reduced Graphene Oxide/Zinc Oxide Nanocomposite: From Synthesis to its Application for Wastewater Purification and Antibacterial Activity

Cited by 34 publications

References 25 publications

Synthesis, Characterization, and Photocatalytic Performance of ZnO–Graphene Nanocomposites: A Review

Synthesis, Characterization, and Photocatalytic Performance of ZnO–Graphene Nanocomposites: A Review

Rocephin‐graphene oxide‐silver nanocomposites: A versatile platform for biomedical applications

Highly ordered structure and susceptibility to light absorption of ZnO/calcium phosphate (5%) to enhance the stability of charge diffusion as a methylene blue bond breaker

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