Advances in Green Synthesis of Metal Oxide Nanoparticles by Marine Algae for Wastewater Treatment by Adsorption and Photocatalysis Techniques

Alprol, Ahmed E.; Mansour, Abdallah Tageldein; Abdelwahab, Abdelwahab M.; Ashour, Mohamed

doi:10.3390/catal13050888

Cited by 28 publications

(8 citation statements)

References 140 publications

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“…Green synthesis of nanoparticles uses bacteria, fungus, algae, viruses, and plants as reducing and stabilizing agents [38]. The utilization of biological components has various advantages over traditional chemical processes, including environmental friendliness, biocompatibility, and cost-effectiveness [39].…”

Section: Microbial Nanoparticlesmentioning

confidence: 99%

Unlocking the Potential of Nano-Enabled Precision Agriculture for Efficient and Sustainable Farming

Goyal,

Rani,

Ritika

et al. 2023

Plants

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Nanotechnology has attracted remarkable attention due to its unique features and potential uses in multiple domains. Nanotechnology is a novel strategy to boost production from agriculture along with superior efficiency, ecological security, biological safety, and monetary security. Modern farming processes increasingly rely on environmentally sustainable techniques, providing substitutes for conventional fertilizers and pesticides. The drawbacks inherent in traditional agriculture can be addressed with the implementation of nanotechnology. Nanotechnology can uplift the global economy, so it becomes essential to explore the application of nanoparticles in agriculture. In-depth descriptions of the microbial synthesis of nanoparticles, the site and mode of action of nanoparticles in living cells and plants, the synthesis of nano-fertilizers and their effects on nutrient enhancement, the alleviation of abiotic stresses and plant diseases, and the interplay of nanoparticles with the metabolic processes of both plants and microbes are featured in this review. The antimicrobial activity, ROS-induced toxicity to cells, genetic damage, and growth promotion of plants are among the most often described mechanisms of operation of nanoparticles. The size, shape, and dosage of nanoparticles determine their ability to respond. Nevertheless, the mode of action of nano-enabled agri-chemicals has not been fully elucidated. The information provided in our review paper serves as an essential viewpoint when assessing the constraints and potential applications of employing nanomaterials in place of traditional fertilizers.

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Section: Microbial Nanoparticlesmentioning

confidence: 99%

Unlocking the Potential of Nano-Enabled Precision Agriculture for Efficient and Sustainable Farming

Goyal,

Rani,

Ritika

et al. 2023

Plants

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“…Increased nanoparticle synthesis rate brought on by uniform distribution of metal salts and bioreductant species of the plant extract is another benefit of faster stirring. Homogeneous distribution speeds up the reduction of metal salts to nanoparticles by enhancing the interaction among species of bioreductant and metal salts [11].…”

Section: Stirring Speedmentioning

confidence: 99%

“…By employing plant metabolites in this manner, researchers aim to improve the safety and efficiency of the synthesized nanoparticles. The extract components operate as capping agents and assist in producing homogenous stable MONPs by inhibiting aggregation [11]. This synthetic method is used to create MONPs that are biocompatible, scalable, non-toxic, repeatable, and helpful in medicine on a big scale.…”

Section: Various Techniques For Synthesizing Monpsmentioning

confidence: 99%

“…Waste prevention and minimization, a decrease in byproducts and pollution, the use of greener (or nontoxic) solvents and auxiliaries, and renewable feedstock are the guiding principles for green synthesis [10]. Numerous methods of green synthesis of nanoparticles include mild reaction conditions, mild reducing agents, microwaves, microbes, solar energy, and ultrasound methods [11] Many biological sources, including yeast, fungi, bacteria, actinomycetes, microalgae, seaweeds, waste aquaculture, plant extracts, disposed-of food products, and horticultural food materials [12], have already been used as substances to produce steady and well-functionalized nanomaterials [13][14][15] (Figure 1). Plant parts, such as leaves, roots, etc., are considered an environmentally friendly and dependable method for producing metal oxide nanoparticles, and synthesizing them is a popular choice for eco-conscious synthesis [16,17].…”

Section: Introductionmentioning

confidence: 99%

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Metal Oxide Nanoparticles’ Green Synthesis by Plants: Prospects in Phyto- and Bioremediation and Photocatalytic Degradation of Organic Pollutants

Ashour,

Mansour,

Abdelwahab

et al. 2023

Processes

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Over the past few decades, the production of metal oxide nanoparticles (MONPs) has developed into an exciting and sophisticated research area. Green metal oxide nanoparticles have played an extremely imperative role in various fields, including biomedical, environmental, energy, agricultural applications, catalytic, bioactive, antibacterial, poisonous, and biocompatible. To achieve sustainability and adopt environmentally friendly practices, the production of MONPs is now increasingly focused on exploring green chemistry and alternative pathways. When made using green synthesis techniques, the metal oxide nanoparticles are especially important because they do not require external stabilizers, capping agents, dangerous chemicals, or harsh operating conditions (high pressure and temperature). Plant-mediated synthesis of different MONPs using either whole cells or extracts has several advantages, including rapid synthesis (compared with other biogenic processes (using fungi and bacteria)), being more stable than other types, being available in nature, and being non-toxic. This review provides a comprehensive overview of the green synthesis of MONPs using plant parts, factors affecting the synthesis, and the characterization of synthesized NPs. Additionally, it highlights the potential of these environmentally friendly nanoparticles that are widely used to treat environmental pollutants, including the removal of heavy metals, antibacterials, and the degradation of organic pollutants.

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“…Many methods, such as co-precipitation [25], sol-gel [26], and hydrothermal [27], were used to prepare the ZnO-SnO 2 heterostructure. Remarkably, the green synthesis method has made strong inroads as an environmentally promising method that possesses several advantages that make it attractive to several researchers [28]. Flower extract was employed as a natural reducing and stabilizing agent to synthesize ZnO-SnO 2 nanocomposite as a photocatalyst for Eriochrome black T dye degradation under sunlight irradiation.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of ZnO/SnO2 Hybrid Nanocomposite for Degradation of Cationic and Anionic Dyes under Sunlight Radiation

Abduh,

Al-Odayni

2023

Materials

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The aim of this work was to biosynthesize SnO2-decorated ZnO (ZT) nanocomposites (NCs) of different Sn content (10, 20, and 30 mol%), namely, ZT10, ZT20, and ZT30, using Olea europaea leaf aqueous extract-based phytocompounds as nanoparticle facilitating agents for application as effective photocatalyst in the removal of dyes from polluted water. The obtained ZT NCs were characterized using various techniques, including FTIR, XRD, TGA, TEM, EDS, UV–Vis, PL, and BET surface area. X-ray diffraction patterns show that rutile SnO2 and hexagonal ZnO coexist in the composites, and their crystallite size (D) is affected by the SnO2 ratio; the obtained D-values were 17.24, 19.07, 13.99, 6.45, and 12.30 nm for ZnO, SnO2, ZT10, ZT20, and ZT30, respectively. The direct band gaps of the ZT heterostructure increase with increasing SnO2 ratio (band gap = 3.10, 3.45, 3.14, 3.17, and 3.21 eV, respectively). TEM spectroscopy revealed nanorod and spherical grain morphologies of the composites, while EDS confirmed the elemental composition, the element ratio, and the composite’s purity. All catalysts exhibit type III isotherm with macropore structure. The photocatalytic efficiency against cationic (methylene blue (MB), rhodamine B (RB)), and anionic (methyl orange (MO)) dyes, under sunlight, was optimal with ZT20. The results revealed almost complete degradation at 55, 65, and 55 min, respectively. Hence, it is evident that incorporating SnO2 improves the photocatalyst’s performance, with an apparent optimal enhancement at 20 mol% Sn decorating ZT NCs. More interestingly, the catalyst stability and activity remained unaffected even after four activating cycles.

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Advances in Green Synthesis of Metal Oxide Nanoparticles by Marine Algae for Wastewater Treatment by Adsorption and Photocatalysis Techniques

Cited by 28 publications

References 140 publications

Unlocking the Potential of Nano-Enabled Precision Agriculture for Efficient and Sustainable Farming

Unlocking the Potential of Nano-Enabled Precision Agriculture for Efficient and Sustainable Farming

Metal Oxide Nanoparticles’ Green Synthesis by Plants: Prospects in Phyto- and Bioremediation and Photocatalytic Degradation of Organic Pollutants

Green Synthesis of ZnO/SnO2 Hybrid Nanocomposite for Degradation of Cationic and Anionic Dyes under Sunlight Radiation

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