Environmental remediation potentialities of metal and metal oxide nanoparticles: Mechanistic biosynthesis, influencing factors, and application standpoint

Jesus, Roberta Anjos de; Assis, Geovânia Cordeiro de; Oliveira, Rodrigo de; Costa, José Arnaldo Santana; Paranhos, Caio Márcio; Bilal, Muhammad; Iqbal, Hafiz M.N.; Ferreira, Luiz Fernando Romanholo; Figueiredo, Renan Tavares

doi:10.1016/j.eti.2021.101851

Cited by 37 publications

(12 citation statements)

References 119 publications

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“…303 Furthermore, biomass required for the formation of nanoparticles (conversion factor) and the cost factor cannot be standardized in the biosynthesis approach, as it depends on the biomolecules in each organism, which eventually depends on the nutrient level, soil/culture medium quality, seasons, geography, and various other factors. 304 Thus, the conversion and cost factor can be calculated for specific cases, considering these parameters and the type of nanoparticle to be synthesized. Also, these parameters affect the reproducibility of the biosynthesized nanoparticles, compared to conventionally synthesized nanoparticles.…”

Section: Challenges In Green Synthesis and Future Perspectivesmentioning

confidence: 99%

Green approaches for the synthesis of metal and metal oxide nanoparticles using microbial and plant extracts

et al. 2022

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Section: Challenges In Green Synthesis and Future Perspectivesmentioning

confidence: 99%

Green approaches for the synthesis of metal and metal oxide nanoparticles using microbial and plant extracts

et al. 2022

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“…In addition, these compounds serve as capping agents and stabilizers of nanoparticles. 5 , 7 Extracts of plants belonging to a wide variety of plant species have been employed effectively in the production of numerous metallic nanoparticles, such as copper, gold, silver, iron, and zinc. 7 , 8 , 10 , 11 Because of this diversity, nanoparticles synthesized by this method vary in size distribution, properties and activities, allowing them to function at the level of internal organs.…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis and Characterization of Gold and Copper Nanoparticles from Salvadora persica Fruit Extracts and Their Biological Properties

Elhabal¹,

Elwy²,

Hassanin³

et al. 2022

IJN

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Introduction Metal nanoparticle synthesis using plant has emerged as an eco-friendly, clean, and viable strategy alternative to chemical and physical approaches. Methods The fruit extract of Salvadora persica (SP) was utilized as a reducing and stabilizing agent in the synthesis of gold (AuNPs) and copper (CuNPs) nanoparticles. Results UV–Vis spectra of the AuNPs and CuNPs showed peaks at the wavelengths of 530 nm and 440 nm, respectively. Transmission electron microscopy showed that nanoparticles exhibited a mainly spherical form, with a distribution range of 100 to 113 nm in diameter for AuNPs and of 130 to 135 nm in diameter for CuNPs. While energy-dispersive X-ray spectroscopy was able to confirm the existence of AuNPs and CuNPs. The alcoholic extract of the fruit SP was analyzed by GC-MS in order to identify whether or not it contained any active phytochemicals. Fourier-transform infrared spectra confirmed the presence capping functional biomolecules of SP on the surface of nanoparticles that acts as stabilizers. Analysis of the zeta potential revealed that NPs with high degree of stability, as demonstrated by a strong negative potential value in the range of 25.2 to 28.7 mV. Results showed that both green AuNPs and CuNPs have potential antimicrobial activity against human pathogens such gram-negative bacteria and gram-positive bacteria, with CuNPs having antimicrobial activity higher than AuNPs. In addition, AuNPs and CuNPs have promising antioxidant and anticancer properties when applied to MCF-7 and MDA-MB-231 breast cancer cells. Studies of molecular docking of SP bioactive compounds were conducted against methenyl tetrahydrofolate synthetase. Among all of them, Beta – Sitosterol was the most prominent. Conclusion These AuNPs and CuNPs are particularly appealing in a variety of applications in the pharmaceutical and medicinal industries due to their economical and environmentally friendly production.

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“…Generally, the most used methods of removing parabens from water and wastewaters just transfer them into another medium, without any degradation. In contrast, photocatalysis represents an alternative technique capable of degrading parabens by using cheaply available solar energy and light-sensitive catalysts [149][150][151].…”

Section: Parabensmentioning

confidence: 99%

Recent Advances in Endocrine Disrupting Compounds Degradation through Metal Oxide-Based Nanomaterials

et al. 2022

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Endocrine Disrupting Compounds (EDCs) comprise a class of natural or synthetic molecules and groups of substances which are considered as emerging contaminants due to their toxicity and danger for the ecosystems, including human health. Nowadays, the presence of EDCs in water and wastewater has become a global problem, which is challenging the scientific community to address the development and application of effective strategies for their removal from the environment. Particularly, catalytic and photocatalytic degradation processes employing nanostructured materials based on metal oxides, mainly acting through the generation of reactive oxygen species, are widely explored to eradicate EDCs from water. In this review, we report the recent advances described by the major publications in recent years and focused on the degradation processes of several classes of EDCs, such as plastic components and additives, agricultural chemicals, pharmaceuticals, and personal care products, which were realized by using novel metal oxide-based nanomaterials. A variety of doped, hybrid, composite and heterostructured semiconductors were reported, whose performances are influenced by their chemical, structural as well as morphological features. Along with photocatalysis, alternative heterogeneous advanced oxidation processes are in development, and their combination may be a promising way toward industrial scale application.

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Environmental remediation potentialities of metal and metal oxide nanoparticles: Mechanistic biosynthesis, influencing factors, and application standpoint

Cited by 37 publications

References 119 publications

Green approaches for the synthesis of metal and metal oxide nanoparticles using microbial and plant extracts

Green approaches for the synthesis of metal and metal oxide nanoparticles using microbial and plant extracts

Biosynthesis and Characterization of Gold and Copper Nanoparticles from Salvadora persica Fruit Extracts and Their Biological Properties

Recent Advances in Endocrine Disrupting Compounds Degradation through Metal Oxide-Based Nanomaterials

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