Green Synthesis and Application of Metal and Metal Oxide Nanoparticles

Hassaan, Mohamed A.; Nemr, Ahmed El; Ragab, Safaa

doi:10.1007/978-3-030-11155-7_125-1

Cited by 6 publications

(10 citation statements)

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“…However, the application of green zinc oxide nanoparticles by algae for water treatment has only been covered in a few academic reviews. Hassaan et al [ 104 ] studied the Congo red dye removal and antibacterial activity of both green and chemically produced ZnO-NPs. Algae from the Gelidium pulchellum genus produce green ZnO-NPs.…”

Section: Application Of Zno-nps For Wastewater Treatmentmentioning

confidence: 99%

Algal Extracts for Green Synthesis of Zinc Oxide Nanoparticles: Promising Approach for Algae Bioremediation

et al. 2023

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Zinc oxide nanoparticles (ZnO-NPs) possess unique properties, making them a popular material across various industries. However, traditional methods of synthesizing ZnO-NPs are associated with environmental and health risks due to the use of harmful chemicals. As a result, the development of eco-friendly manufacturing practices, such as green-synthesis methodologies, has gained momentum. Green synthesis of ZnO-NPs using biological substrates offers several advantages over conventional approaches, such as cost-effectiveness, simplicity of scaling up, and reduced environmental impact. While both dried dead and living biomasses can be used for synthesis, the extracellular mode is more commonly employed. Although several biological substrates have been successfully utilized for the green production of ZnO-NPs, large-scale production remains challenging due to the complexity of biological extracts. In addition, ZnO-NPs have significant potential for photocatalysis and adsorption in the remediation of industrial effluents. The ease of use, efficacy, quick oxidation, cost-effectiveness, and reduced synthesis of harmful byproducts make them a promising tool in this field. This review aims to describe the different biological substrate sources and technologies used in the green synthesis of ZnO-NPs and their impact on properties. Traditional synthesis methods using harmful chemicals limit their clinical field of use. However, the emergence of algae as a promising substrate for creating safe, biocompatible, non-toxic, economic, and ecological synthesis techniques is gaining momentum. Future research is required to explore the potential of other algae species for biogenic synthesis. Moreover, this review focuses on how green synthesis of ZnO-NPs using biological substrates offers a viable alternative to traditional methods. Moreover, the use of these nanoparticles for industrial-effluent remediation is a promising field for future research.

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Section: Application Of Zno-nps For Wastewater Treatmentmentioning

confidence: 99%

Algal Extracts for Green Synthesis of Zinc Oxide Nanoparticles: Promising Approach for Algae Bioremediation

et al. 2023

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“…Redox processes (Eqs. [3][4][5][6][7][8][9][10][11][12][13][14] involving numerous organic compounds adsorbed on the photocatalyst surface can easily involve electron and hole migration to the photocatalyst surface. The formation of high-energy OH occurs when positively charged holes ( h+ VB) react with surface-bound water or .…”

Section: Mechanism Of Photocatalytic Reactionsmentioning

confidence: 99%

“…The "nano" universe is too big to be categorized into a single mode. As a result, the classification of NPs is governed by several factors, including their size, shape, content, homogeneity, and aggregation [5]. Figure 7 depicts a variety of traditional methods for the classification of NPs.…”

Section: Different Approaches For Synthesis Of Npsmentioning

confidence: 99%

“…Photocatalysts are nanoparticles (NPs) with semiconducting features such as light absorption, charge transfer, and favorable electronic structure, among others. Photoactive NPs serve as catalysts in a variety of applications, including sustainable energy production and environmental remediation [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. When compared with bulk materials, photocatalysts have exceptional structures and a higher surface area to volume ratio, which boosts their actions [16,17].…”

Section: Introductionmentioning

confidence: 99%

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Principles of Photocatalysts and Their Different Applications: A Review

Hassaan,

El-Nemr,

Elkatory

et al. 2023

Top Curr Chem (Z)

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Human existence and societal growth are both dependent on the availability of clean and fresh water. Photocatalysis is a type of artificial photosynthesis that uses environmentally friendly, long-lasting materials to address energy and environmental issues. There is currently a considerable demand for low-cost, high-performance wastewater treatment equipment. By changing the structure, size, and characteristics of nanomaterials, the use of nanotechnology in the field of water filtration has evolved dramatically. Semiconductor-assisted photocatalysis has recently advanced to become among the most promising techniques in the fields of sustainable energy generation and ecological cleanup. It is environmentally beneficial, cost-effective, and strictly linked to the zero waste discharge principle used in industrial effluent treatment. Owing to the reduction or removal of created unwanted byproducts, the green synthesis of photoactive nanomaterial is more beneficial than chemical synthesis approaches. Furthermore, unlike chemical synthesis methods, the green synthesis method does not require the use of expensive, dangerous, or poisonous ingredients, making it a less costly, easy, and environmental method for photocatalyst synthesis. This work focuses on distinct greener synthesis techniques utilized for the production of new photocatalysts, including metals, metal doped-metal oxides, metal oxides, and plasmonic nanostructures, including the application of artificial intelligence and machine learning to the design and selection of an innovative photocatalyst in the context of energy and environmental challenges. A brief overview of the industrial and environmental applications of photocatalysts is also presented. Finally, an overview and recommendations for future research are given to create photocatalytic systems with greatly improved stability and efficiency.

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“…Green synthesizing pathways operate in a simple, affordable, non-toxic, and environmentally friendly 30,31 . Microalgae and seaweed are aquatic plants that may grow on surfaces that are typically inappropriate for other applications, produce the greatest biomass, have the best photosynthetic efficiency, and are resistant to several pollutants [32][33][34][35][36][37][38][39][40] . Seaweeds have significant metal-binding capacities due to the presence of proteins, polysaccharides, and lipids with diverse functional groups on the surface of their cell walls 28 .…”

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confidence: 99%

Cube-shaped Cobalt-doped zinc oxide nanoparticles with increased visible-light-driven photocatalytic activity achieved by green co-precipitation synthesis

Meky,

Hassaan,

Fetouh

et al. 2023

Sci Rep

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From the perspective of environmental protection, the highly efficient degradation of antibiotics and organic dyes in wastewater needs to be tackled as soon as possible. In this study, an ecofriendly and green cube-shaped cobalt-doped zinc oxide nanoparticles (Co–ZnO NPs) photocatalyst using Pterocladia Capillacea (P. Capillacea) water extract loaded with 5, 10, and 15% cobalt ions were formed via co-precipitation process to degrade antibiotics. The prepared Co–ZnO NPs were tested as a photocatalyst for the photodegradation of ciprofloxacin (CIPF) in the presence of a visible LED-light source. Co–ZnO NPs have been obtained through the co-precipitation method in the presence of P. Capillacea extract as a green capping agent and reducing agent, for the first time. Several characterization techniques including FTIR, XRD, BET, XPS, TEM, EDX, SEM, TGA and DRS UV–Vis spectroscopy were applied to study the prepared Co–ZnO NPs. XRD results suggested that the average size of these NPs ranged between 42.82 and 46.02 nm with a hexagonal wurtzite structure. Tauc plot shows that the optical energy bandgap of ZnO NPs (3.19 eV) gradually decreases to 2.92 eV by Co doping. Examinations showed that 5% Co–ZnO NPs was the highest efficient catalyst for the CIPF photodegradation when compared with ZnO NPs and other 10 and 15% Co–ZnO NPs. A 10 mg/L solution of CIPF was photo-degraded (100%) within the first 15 min irradiation. The kinetics showed that the first-order model is suitable for displaying the rate of reaction and amount of CIPF elimination with R2 = 0.952. Moreover, central composite design optimization of the 5% Co-doped ZnO NPs was also investigated.

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Green Synthesis and Application of Metal and Metal Oxide Nanoparticles

Cited by 6 publications

References 100 publications

Algal Extracts for Green Synthesis of Zinc Oxide Nanoparticles: Promising Approach for Algae Bioremediation

Algal Extracts for Green Synthesis of Zinc Oxide Nanoparticles: Promising Approach for Algae Bioremediation

Principles of Photocatalysts and Their Different Applications: A Review

Cube-shaped Cobalt-doped zinc oxide nanoparticles with increased visible-light-driven photocatalytic activity achieved by green co-precipitation synthesis

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