Mechanistic approach on the synthesis of metallic nanoparticles from microbes

Sunny, Nisha Elizabeth; Kaviya, A.; Kumar, Sumit

doi:10.1016/b978-0-12-823575-1.00026-3

Cited by 5 publications

(5 citation statements)

References 152 publications

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“…Over past decades, resistance to antibiotics has become increasingly widespread and resulted in noteworthy deaths of humans. The emergence and re-emergence of pathogens have become a major public health concern worldwide, and the rapid emergence of antibiotic-resistant Gram-positive and Gram-negative pathogenic germs is a major public health concern [130][131][132][133][134]. The long list of drug-resistant bacteria includes macrolideresistant Streptococcus pyogenes, sulfonamide, penicillin, methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus, penicillin-resistant Streptococcus pneumoniae, multi-drug resistant Mycobacterium tuberculosis (MDR-M. tuberculosis), penicillinresistant Neisseria gonorrhoeae (PRNG), E. coli, E. cloacae, K. pneumoniae, Salmonella enterica, Shigella flexneri, Acinetobacter baumannii, Vibrio cholerae, P. aeruginosa, and beta-lactamaseexpressing Haemophilus influenzae.…”

Section: Applications Of Phytofabricated Nps As Nanoantibioticsmentioning

confidence: 99%

Recent Advances in Green Synthesis, Characterization, and Applications of Bioactive Metallic Nanoparticles

Begum

Pratibha²,

Rawat

et al. 2022

Pharmaceuticals

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Nanoparticles (NPs) are elements derived from a cluster of atoms with one or more dimensions in the nanometer scale in the range of 1–100 nm. The bio nanofabrication of metallic NPs is now an important dynamic area of research, with major significance in applied research. Biogenic synthesis of NPs is more desirable than physical and chemical synthesis due to its eco-friendliness, non-toxicity, lower energy consumption, and multifunctional nature. Plants outperform microorganisms as reducing agents as they contain large secondary biomolecules that accelerate the reduction and stability of the NPs. The produced NPs can then be studied spectroscopically (UV-Visible, XRD, Raman, IR, etc.) and microscopically (SEM, TEM, AFM, etc.). The biological reduction of a metallic ion or its oxide to a nanoparticle is quick, simple, and may be scaled up at room temperature and pressure. The rise in multi-drug resistant (MDR) microbes due to the immoderate use of antibiotics in non-infected patients is a major cause of morbidity and mortality in humans. The contemporary development of a new class of antibiotics with different mechanisms of action to kill microbes is crucial. Metals and their oxides are extremely toxic to microbes at unprecedentedly low concentrations. In addition, prevailing infections in plants and animals are raising significant concerns across the globe. NPs’ wide range of bioactivity makes them ideal antimicrobial agents in agricultural and medical fields. The present review outlines the synthesis of metallic NPs from botanicals, which enables the metals to be in a stabilized form even after ionization. It also presents a valuable database on the biofunctionalization of synthesized NPs for further drug development.

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Section: Applications Of Phytofabricated Nps As Nanoantibioticsmentioning

confidence: 99%

Recent Advances in Green Synthesis, Characterization, and Applications of Bioactive Metallic Nanoparticles

Begum

Pratibha²,

Rawat

et al. 2022

Pharmaceuticals

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show abstract

“…In green nanotechnology, nanoparticles are synthesized using fungi, which play a pivotal function in the removal of toxic compounds and organic pollutants ( Singh et al, 2018 ). In recent times, the synthesis of metal nanoparticles from fungi has gained a big interest of researchers around the world ( Sunny et al, 2022 ). There are several advantages of metal nanoparticles synthesized using fungi such as higher capacity of metal uptake, simple and low cost fabrication, tolerant against metals, high scalability, highly stable ( Yadav et al, 2015 ).…”

Section: Fungi Mediated Nano-bioremediationmentioning

confidence: 99%

Insights into the recent advances in nano-bioremediation of pesticides from the contaminated soil

Singh

Saxena²

2022

Front. Microbiol.

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In the present scenario, the uncontrolled and irrational use of pesticides is affecting the environment, agriculture and livelihood worldwide. The excessive application of pesticides for better production of crops and to maintain sufficient food production is leading to cause many serious environmental issues such as soil pollution, water pollution and also affecting the food chain. The efficient management of pesticide use and remediation of pesticide-contaminated soil is one of the most significant challenges to overcome. The efficiency of the current methods of biodegradation of pesticides using different microbes and enzymes depends on the various physical and chemical conditions of the soil and they have certain limitations. Hence, a novel strategy is the need of the hour to safeguard the ecosystem from the serious environmental hazard. In recent years, the application of nanomaterials has drawn attention in many areas due to their unique properties of small size and increased surface area. Nanotechnology is considered to be a promising and effective technology in various bioremediation processes and provides many significant benefits for improving the environmental technologies using nanomaterials with efficient performance. The present article focuses on and discusses the role, application and importance of nano-bioremediation of pesticides and toxic pollutants to explore the potential of nanomaterials in the bioremediation of hazardous compounds from the environment.

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“…As a result, the agglomeration of particles and size variation have been the major challenges in getting reproducible results in each batch. Accordingly, it was necessary to establish considerable means for AgNP synthesis to ease the ecological footprints and subdue the constraints of traditional approaches. − It has been reported that the reduction stage for AgNPs is less than 200 ms, and the mixing of reactants is a crucial stage to affirm uniform reaction conditions . In addition to the type of synthesis approach, the synthesis abides by a stepwise process initiated from the input of a metal ion: nucleation, coalescence, ripening, and growth, where the nucleation stage determines the shape of NPs .…”

Section: Introductionmentioning

confidence: 99%

One-Step Synthesis of Ultrasmall Nanoparticles in Glycerol as a Promising Green Solvent at Room Temperature Using Omega-Shaped Microfluidic Micromixers

Jahangir,

Munir,

Yesiloz

2023

Anal. Chem.

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Despite innovations in the synthesis protocol of nanoparticles (NPs), the size distribution and uniformity of particles still remain as crucial attributes. Homogeneous and rapid nucleation is a critical phenomenon to obtain monodisperse nanoparticles. Herein, we have carried out the synthesis of metal nanoparticles in a customized microfluidic (MF) chip, with 18 omega-shaped micromixers, by using glycerol as a promising green solvent and reducing agent at various concentrations (10−80%), and simultaneous comparison of the results from batch synthesis. Initially, mixing characterization for 10−80% glycerol was obtained by adjusting the Peclet (Pe) number. Further, the effect of the Pe number, time, and concentrations of polyvinylpyrrolidone, metal source, and glycerol on the NP size was investigated. Interestingly, the experimental findings depicted that by varying different parameters, the spherical nanoparticles with an average ultrasmall particle diameter of <2 nm were obtained at all glycerol concentrations (10−80%), as compared to batch synthesis (giving a yield of ∼10-fold larger particles). The mixing efficiency in this MF chip design was analyzed by using a fluorescent dye in glycerol, while the particle morphology and size were characterized by using dynamic light scattering, transmission electron microscopy, and ultraviolet−visible spectroscopy. Hence, compared to the conventional benchtop-assisted NP synthesis, this study unveils the significant effect of the microfluidic technique on the synthesis of ultrasmall and homogeneous nanoparticles in a single step, using an environmentally friendly solvent.

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Mechanistic approach on the synthesis of metallic nanoparticles from microbes

Cited by 5 publications

References 152 publications

Recent Advances in Green Synthesis, Characterization, and Applications of Bioactive Metallic Nanoparticles

Recent Advances in Green Synthesis, Characterization, and Applications of Bioactive Metallic Nanoparticles

Insights into the recent advances in nano-bioremediation of pesticides from the contaminated soil

One-Step Synthesis of Ultrasmall Nanoparticles in Glycerol as a Promising Green Solvent at Room Temperature Using Omega-Shaped Microfluidic Micromixers

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