A review on biosynthesis of metal nanoparticles and its environmental applications

Saravanan, A.; Kumar, P. Senthil; Karishma, S.; Vo, Dai‐Viet N.; Jeevanantham, S.; Yaashikaa, P.R.; George, Cynthia Susan

doi:10.1016/j.chemosphere.2020.128580

Cited by 308 publications

(144 citation statements)

References 161 publications

Supporting

Mentioning

142

Contrasting

Unclassified

Order By: Relevance

“…Microorganisms such as bacteria, fungi, yeast, and algae are often favored for NP synthesis due to simpler cultivation, rapid growth rate, and their capacity to grow at atmospheric pH, temperature, and pressure conditions. Different biological agents behave differently with different metal solutions in order to form NPs (Fariq et al, 2017;Saravanan et al, 2020;Ghosh et al, 2021). Metal ions are initially trapped on the surface of the cell followed by the reduction of metal ions to NPs with the presence of enzymes synthesized by the microbes.…”

Section: Microbial-mediated Synthesis Of Nanoparticlesmentioning

confidence: 99%

“…Fungal NP synthesis is favored over other microbial synthesis methods due to the high resistance of fungal mycelial mesh to higher flow and agitation in bioreactors ( Saravanan et al, 2020 ). Chitin was found to be the key ingredient in the fungal cell wall system that is involved in heavy metal complexation, resulting in synthesis of NPs ( Wang L. et al, 2018 ).…”

Section: Microbial-mediated Synthesis Of Nanoparticlesmentioning

confidence: 99%

“…Chitin was found to be the key ingredient in the fungal cell wall system that is involved in heavy metal complexation, resulting in synthesis of NPs ( Wang L. et al, 2018 ). Due to several bioactive metabolites, strong aggregation, and increased efficiency, fungi are more resourceful than bacteria in the biosynthesis of NPs ( Castro-Longoria et al, 2011 ; Alghuthaymi et al, 2015 ; Saravanan et al, 2020 ). In Au NP biosynthesis, many filamentous fungi have been reported to be capable.…”

Section: Microbial-mediated Synthesis Of Nanoparticlesmentioning

confidence: 99%

See 2 more Smart Citations

Mechanistic Aspects of Microbe-Mediated Nanoparticle Synthesis

et al. 2021

View full text Add to dashboard Cite

In recent times, nanoparticles (NPs) have found increasing interest owing to their size, large surface areas, distinctive structures, and unique properties, making them suitable for various industrial and biomedical applications. Biogenic synthesis of NPs using microbes is a recent trend and a greener approach than physical and chemical methods of synthesis, which demand higher costs, greater energy consumption, and complex reaction conditions and ensue hazardous environmental impact. Several microorganisms are known to trap metals in situ and convert them into elemental NPs forms. They are found to accumulate inside and outside of the cell as well as in the periplasmic space. Despite the toxicity of NPs, the driving factor for the production of NPs inside microorganisms remains unelucidated. Several reports suggest that nanotization is a way of stress response and biodefense mechanism for the microbe, which involves metal excretion/accumulation across membranes, enzymatic action, efflux pump systems, binding at peptides, and precipitation. Moreover, genes also play an important role for microbial nanoparticle biosynthesis. The resistance of microbial cells to metal ions during inward and outward transportation leads to precipitation. Accordingly, it becomes pertinent to understand the interaction of the metal ions with proteins, DNA, organelles, membranes, and their subsequent cellular uptake. The elucidation of the mechanism also allows us to control the shape, size, and monodispersity of the NPs to develop large-scale production according to the required application. This article reviews different means in microbial synthesis of NPs focusing on understanding the cellular, biochemical, and molecular mechanisms of nanotization of metals.

show abstract

Section: Microbial-mediated Synthesis Of Nanoparticlesmentioning

confidence: 99%

Section: Microbial-mediated Synthesis Of Nanoparticlesmentioning

confidence: 99%

Section: Microbial-mediated Synthesis Of Nanoparticlesmentioning

confidence: 99%

See 1 more Smart Citation

Mechanistic Aspects of Microbe-Mediated Nanoparticle Synthesis

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In 2020, Choi et al jointly published an important review of biosynthetic inorganic nanomaterials in Nature Reviews Chemistry [ 40 ]. In 2021, Saravanan et al published a review on biosynthetic metal nanomaterials and their environmental applications [ 42 ], indicating that the subject of biosynthetic nanomaterials was gradually coming to maturity. A wide range of metal nanoparticles and QDs have therefore been synthesized by diverse microorganisms and biomolecules in the past 20 years [ 41 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

Controlled Biosynthesis of ZnCdS Quantum Dots with Visible-Light-Driven Photocatalytic Hydrogen Production Activity

Miao

et al. 2021

Nanomaterials

View full text Add to dashboard Cite

The development of visible-light-responsive photocatalysts with high efficiency, stability, and eco-friendly nature is beneficial to the large-scale application of solar hydrogen production. In this work, the production of biosynthetic ternary ZnCdS photocatalysts (Eg = 2.35–2.72 eV) by sulfate-reducing bacteria (SRB) under mild conditions was carried out for the first time. The huge amount of biogenic S2− and inherent extracellular proteins (EPs) secreted by SRB are important components of rapid extracellular biosynthesis. The ternary ZnCdS QDs at different molar ratios of Zn2+and Cd2+ from 15:1 to 1:1 were monodisperse spheres with good crystallinity and average crystallite size of 6.12 nm, independent of the molar ratio of Cd2+ to Zn2+. All the ZnCdS QDs had remarkable photocatalytic activity and stability for hydrogen evolution under visible light, without noble metal cocatalysts. Especially, ZnCdS QDs at Zn/Cd = 3:1 showed the highest H2 production activity of 3.752 mmol·h−1·g−1. This excellent performance was due to the high absorption of visible light, the high specific surface area, and the lower recombination rate between photoexcited electrons and holes. The adhered inherent EPs on the ZnCdS QDs slowed down the photocorrosion and improved the stability in photocatalytic hydrogen evolution. This study provides a new direction for solar hydrogen production.

show abstract

“…According to the high demand for these NPs, various approaches for their synthesis have been proposed, mainly via physical and chemical methods. In the physical methods, metal NPs are produced through the reduction of a bulk metal to nanosized metal particles by cutting, milling, or laser-irradiating [9,10]. In contrast, chemical methods are less expensive and simpler than physical methods, making them suitable for an industrial mass-production of metal NPs.…”

Section: Introductionmentioning

confidence: 99%

Cellular biogenesis of metal nanoparticles by water velvet ( Azolla pinnata ): different fates of the uptake Fe ³⁺ and Ni ²⁺ to transform into nanoparticles

Janthima

Siri

2021

Artificial Cells, Nanomedicine, and Biotechnology

View full text Add to dashboard Cite

show abstract

A review on biosynthesis of metal nanoparticles and its environmental applications

Cited by 308 publications

References 161 publications

Mechanistic Aspects of Microbe-Mediated Nanoparticle Synthesis

Mechanistic Aspects of Microbe-Mediated Nanoparticle Synthesis

Controlled Biosynthesis of ZnCdS Quantum Dots with Visible-Light-Driven Photocatalytic Hydrogen Production Activity

Cellular biogenesis of metal nanoparticles by water velvet ( Azolla pinnata ): different fates of the uptake Fe ³⁺ and Ni ²⁺ to transform into nanoparticles

Contact Info

Product

Resources

About

A review on biosynthesis of metal nanoparticles and its environmental applications

Cited by 308 publications

References 161 publications

Mechanistic Aspects of Microbe-Mediated Nanoparticle Synthesis

Mechanistic Aspects of Microbe-Mediated Nanoparticle Synthesis

Controlled Biosynthesis of ZnCdS Quantum Dots with Visible-Light-Driven Photocatalytic Hydrogen Production Activity

Cellular biogenesis of metal nanoparticles by water velvet ( Azolla pinnata ): different fates of the uptake Fe 3+ and Ni 2+ to transform into nanoparticles

Contact Info

Product

Resources

About

Cellular biogenesis of metal nanoparticles by water velvet ( Azolla pinnata ): different fates of the uptake Fe ³⁺ and Ni ²⁺ to transform into nanoparticles