Photocatalytic activity of graphene oxide/zinc oxide nanocomposite derived from rice husk for the degradation of phenanthrene under ultraviolet-visible light

Chauhan, Husn Ara; Rafatullah, Mohd; Ali, Khozema Ahmed; Umar, M. Sarosh; Khan, Moonis Ali; Jeon, Byong‐Hun

doi:10.1016/j.jwpe.2022.102714

Cited by 23 publications

(6 citation statements)

References 68 publications

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“…[8] GO-ZnO nanocomposite derived from rice husk is proven to be a good photocatalyst for degrading phenanthrene under UV-visible irradiation. [9] Reduced grahene oxide (rGO) extracted from waste dry cell batteries are used to synthesis rGO-ZnO nanocomposite and it showed better ultraviolet photocatalytic performance for chloramphenicol degradation. [10] 3D nanostructures like sea urchin shaped ZnO and ZnO nanorods are utilized as a catalyst for degrading different organic dyes and the improved photocatalytic efficiency was reported under UV irradiation.…”

Section: Introductionmentioning

confidence: 99%

Graphene Oxide Incorporated Zinc Oxide Thin Films by Spray Pyrolysis for Efficient Photodegradation of Methylene Blue

et al. 2023

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Photodegradation of methylene blue dye was studied with pure and graphene oxide incorporated zinc oxide thin films as catalysts. Graphene oxide content in the precursor solution was varied from 0.0005 to 0.005 g/L. Thin films were prepared by automated spray pyrolysis technique at a substrate temperature of 425 °C. Structural studies revealed the formation of hexagonal wurtzite structure of zinc oxide. Carbon presence in the films was confirmed with energy‐dispersive spectroscopy. Optical band gap of the samples was determined using Tauc method. Intensity of the near band emission of photoluminescence spectrum was found to decrease upon increasing graphene oxide concentration. Photocatalytic activity of all the films has been studied against methylene blue dye under solar irradiation for 180 minutes and it is found that the highest graphene oxide content attributes to better degradation efficiency of 91.2 %.

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Section: Introductionmentioning

confidence: 99%

Graphene Oxide Incorporated Zinc Oxide Thin Films by Spray Pyrolysis for Efficient Photodegradation of Methylene Blue

et al. 2023

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“…The decolorization of methylene blue following recycling four times has been observed to be retained at 89% (only 2% was decreased, as compared to the original value after four cycles), and as shown in Figure 10, GO/ZnO exhibits a very high degree of stability during the photocatalytic degradation process. A study performed by Chuhan et al [53], also observed the same results; that is, a decrease (small) in the effectiveness of degradation might result from the accumulation of specific oxidation products at the surface of the catalyst, which has the effect of limiting multiple active catalysts zones. Moreover, the strong redox capability of the substance additionally enables it to produce remarkable reducing efficiency for the organic pollutants at smaller concentrations.…”

Section: Reusability Of the Photocatalystmentioning

confidence: 56%

Biomass Mediated Synthesis of ZnO and ZnO/GO for the Decolorization of Methylene Blue under Visible Light Source

et al. 2023

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In this study, zinc oxide (ZnO) as well as ZnO/GO (zinc oxide/graphene oxide) were successfully synthesized. The Carica papaya leaf extract was used to synthesize ZnO and oil palm empty fruit bunch biomass to obtain graphene, which was further used to obtain graphene oxide. The samples were characterized through a variety of analytical methods such as scanning electron microscopy, transmission electron microscopy, X-ray diffraction analysis, Fourier transform infrared spectroscopy and UV–Visible spectroscopy in order to understand their morphology, size, structural phase purity, functional groups and optical properties. Various peaks such as O-H, Zn-OH and Zn-O were found in the case of ZnO. Some additional peaks, such as C-C and C=C, were also been detected while analyzing the sample by Fourier-transform infrared spectroscopy. The results of the XRD and SEM studies demonstrated that the synthesized material shows the crystalline nature of the substance in the case of ZnO, and the crystallinity decreases for ZnO/GO. The average crystallite size was found to 80.0 nm for ZnO and 74.0 nm for ZnO/GO. Further, a red shift was shown in the case of ZnO/GO, which was indicated by the UV–Vis absorption spectrum. In the TEM analysis, the particles were shown to be nanosized. For instance, the highest number of particles was found in the range of 100 to 120 nm in the case of ZnO, while 80–100 nm sized particles were found for ZnO/GO. Using synthesized ZnO and ZnO/GO, the decolorization of methylene blue was found to be 64% and 91%, respectively.

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“…The unique optical, thermal, mechanical, structural, and electromagnetic properties of nanomaterials make them beneficial for various possible applications. Nanomaterials can be synthesized using either physical, chemical, or biological approaches and as nanoparticles, nanoadsorbents, nanosensors, nanocatalysts, or nanomembranes for wastewater treatment [59]. Nowadays, green-chemistry-based techniques are extensively applied for the synthesis of nanomaterials for environmental applications, providing a sustainable alternative to chemical-free methods with zero-waste generation [60,61].…”

Section: Advanced Nanotechnological Approaches For Removal Of Popsmentioning

confidence: 99%

Emerging Trends in the Remediation of Persistent Organic Pollutants Using Nanomaterials and Related Processes: A Review

Boulkhessaim

Gacem

Khan³

et al. 2022

Nanomaterials

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Persistent organic pollutants (POPs) have become a major global concern due to their large amount of utilization every year and their calcitrant nature. Due to their continuous utilization and calcitrant nature, it has led to several environmental hazards. The conventional approaches are expensive, less efficient, laborious, time-consuming, and expensive. Therefore, here in this review the authors suggest the shortcomings of conventional techniques by using nanoparticles and nanotechnology. Nanotechnology has shown immense potential for the remediation of such POPs within a short period of time with high efficiency. The present review highlights the use of nanoremediation technologies for the removal of POPs with a special focus on nanocatalysis, nanofiltration, and nanoadsorption processes. Nanoparticles such as clays, zinc oxide, iron oxide, aluminum oxide, and their composites have been used widely for the efficient remediation of POPs. Moreover, filtrations such as nanofiltration and ultrafiltration have also shown interest in the remediation of POPs from wastewater. From several pieces of literature, it has been found that nano-based techniques have shown complete removal of POPs from wastewater in comparison to conventional methods, but the cost is one of the major issues when it comes to nano- and ultrafiltration. Future research in nano-based techniques for POP remediation will solve the cost issue and will make it one of the most widely accepted and available techniques. Nano-based processes provide a sustainable solution to the problem of POPs.

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Photocatalytic activity of graphene oxide/zinc oxide nanocomposite derived from rice husk for the degradation of phenanthrene under ultraviolet-visible light

Cited by 23 publications

References 68 publications

Graphene Oxide Incorporated Zinc Oxide Thin Films by Spray Pyrolysis for Efficient Photodegradation of Methylene Blue

Graphene Oxide Incorporated Zinc Oxide Thin Films by Spray Pyrolysis for Efficient Photodegradation of Methylene Blue

Biomass Mediated Synthesis of ZnO and ZnO/GO for the Decolorization of Methylene Blue under Visible Light Source

Emerging Trends in the Remediation of Persistent Organic Pollutants Using Nanomaterials and Related Processes: A Review

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