Photocatalytic degradation of Congo red using Carissa edulis extract capped zinc oxide nanoparticles

Fowsiya, J.; Madhumitha, G.; Al-Dhabi, Naïf Abdullah; Arasu, Mariadhas Valan

doi:10.1016/j.jphotobiol.2016.07.011

Cited by 216 publications

(55 citation statements)

References 19 publications

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“…The need for hygienic and safe drinking water is increasing day by day. Considering this fact, the use of metal and metal oxide semiconductor nanomaterials for oxidizing toxic pollutants has become of great interest in recent material research fields [ 129 – 131 ]. In the nano regime, semiconductor nanomaterials have superior photocatalytic activity relative to the bulk materials.…”

Section: Environmental Remediation Applicationsmentioning

confidence: 99%

‘Green’ synthesis of metals and their oxide nanoparticles: applications for environmental remediation

et al. 2018

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In materials science, “green” synthesis has gained extensive attention as a reliable, sustainable, and eco-friendly protocol for synthesizing a wide range of materials/nanomaterials including metal/metal oxides nanomaterials, hybrid materials, and bioinspired materials. As such, green synthesis is regarded as an important tool to reduce the destructive effects associated with the traditional methods of synthesis for nanoparticles commonly utilized in laboratory and industry. In this review, we summarized the fundamental processes and mechanisms of “green” synthesis approaches, especially for metal and metal oxide [e.g., gold (Au), silver (Ag), copper oxide (CuO), and zinc oxide (ZnO)] nanoparticles using natural extracts. Importantly, we explored the role of biological components, essential phytochemicals (e.g., flavonoids, alkaloids, terpenoids, amides, and aldehydes) as reducing agents and solvent systems. The stability/toxicity of nanoparticles and the associated surface engineering techniques for achieving biocompatibility are also discussed. Finally, we covered applications of such synthesized products to environmental remediation in terms of antimicrobial activity, catalytic activity, removal of pollutants dyes, and heavy metal ion sensing.

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Section: Environmental Remediation Applicationsmentioning

confidence: 99%

‘Green’ synthesis of metals and their oxide nanoparticles: applications for environmental remediation

et al. 2018

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“…Plant extracts contain variety of phytochemicals which act as reducing agent to synthesize ZnO. Use of biogenic ZnO exhibited successful results in photodegradation of dyes (Fowsiya et al 2016;Karnan and Selvakumar 2016;Madhumitha et al 2019). Owing to the eco-friendly nature and strong environmental implications, development of the biogenic ZnO for different environmental applications has been the subject of different recent reviews (Ahmed et al 2017;Basnet et al 2018).…”

Section: Zno-based Doped Photocatalystsmentioning

confidence: 99%

Fabrication, functionalization and performance of doped photocatalysts for dye degradation and mineralization: a review

et al. 2020

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Textile wastewaters contain refractory dyes that cause pollution and socioeconomic issues, thus calling for efficient remediation techniques such as photocatalysis. We review the fabrication, functionalization, performance and limitations of doped catalysts for degrading and mineralizing dyes. We present developments in photocatalyst immobilization and photocatalytic reactor design. Methods such as microwave irradiation, sonication and use of ionic liquids are emerging for the preparation of doped photocatalysts. Whilst single-dye systems have been extensively studied, there is limited knowledge on multipledye systems. Immobilization of photocatalysts is gaining popularity for large-scale application, but faces issues of erosion, corrosion, mechanical strength and structure integrity. Ecotoxicological studies are required in real environments to validate the potential applications of nanostructured doped photocatalysts.

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“…Zinc oxide nanoparticles (ZnO NPs) are an example of semiconductors widely used in many industrial and consumer products. One of the most characteristic properties of the ZnO NPs is photocatalytic activity (Riyadh et al 2015;Fowsiya et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Fe3O4/ZnO nanoparticles and their application for the photodegradation of anionic and cationic dyes

Długosz

Szostak

Krupiński

et al. 2020

Int. J. Environ. Sci. Technol.

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Multifunctional materials have become an important research subject in recent years. Zinc oxide nanoparticles (ZnO NP) deposited on iron oxide (Fe 3 O 4) allow to obtain material with photocatalytic and magnetic properties. The mass share of Fe 3 O 4 in the composite was 30%. Saturation magnetization for this sample was about 9.5 emu/g. The use of magnetic material allows to recover the photocatalyst after the photodegradation process and reuse it. The possibility of recovery of Fe 3 O 4 nanoparticles with a magnet was estimated at 94.80%, while the recovery of Fe 3 O 4 /ZnO achieved 83.91%. The effects of the type of dyes (Methylene Blue, Methyl Orange, Quinoline Yellow, Eriochromic Black T and Trypanic Blue) on their photodegradation efficiency in terms of molar mass of the dye, the solvent in which the processes were carried out and the type of dye charge were investigated. The photocatalytic material showed higher photodegradation activity of dyes while increasing their molar mass. ZnO NPs deposited on Fe 3 O 4 presented 95.61% photocatalytic efficiency against Trypan Blue and 63.02% against Methylene Blue. Increasing the surface area of the catalyst to 39 m 2 /g and the presence of micro-, meso-and macropores had a positive effect on the sorption process of dyes, especially those of larger sizes, allowing their degradation in the photodegradation process.

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Photocatalytic degradation of Congo red using Carissa edulis extract capped zinc oxide nanoparticles

Cited by 216 publications

References 19 publications

‘Green’ synthesis of metals and their oxide nanoparticles: applications for environmental remediation

‘Green’ synthesis of metals and their oxide nanoparticles: applications for environmental remediation

Fabrication, functionalization and performance of doped photocatalysts for dye degradation and mineralization: a review

Synthesis of Fe3O4/ZnO nanoparticles and their application for the photodegradation of anionic and cationic dyes

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