scholarly journals An overview of green synthesis mediated metal nanoparticles preparation and its scale up opportunities

2021 ◽  
Vol 11 (6) ◽  
pp. 304-314
Author(s):  
Anupama Singh ◽  
BLR Madhavi ◽  
M N Nithin Sagar
Keyword(s):  
Green Synthesis ◽  
Metal Nanoparticles ◽  
Process Parameters ◽  
Plant Extract ◽  
Scale Up ◽  
Metal Nanoparticle ◽  
Wide Range ◽  
One Step ◽  
Physical And Chemical

Nanoparticles in different field of science have a wide range of utility. They come in different forms. Among these, metal nanoparticles (MNP) have become an emerging tool for diagnostic as well as for therapeutic purposes. Metal nanoparticles are nano-sized particles made up of inorganic metals or their metal oxides. Various methods are available for the preparation/production of metal nanoparticles. In addition to the existing physical and chemical methods, green synthesis is an area that has drawn the attention of researchers in the decade and continues to be a potential area of research. The following review introduces about metal nanoparticles and discusses in details about the plant extract mediated metal nanoparticles synthesis, the principle of metal nanoparticle formation, various process parameters that are important for its synthesis, characterization of metal nanoparticles and the scope for commercialization are elaborated. Metal nanoparticles at research, employing plant extract mediated green synthesis have been extensively reviewed. This review tries to bring into light the feasibility of commercializing the green synthesis by using plant extracts. Keywords: Green synthesis; Plant extract; One-step synthesis; Characterization; Process parameters; Scale-up

Nanobiotechnology: Nature-inspired silver nanoparticles towards green synthesis

2021 ◽  
pp. 0958305X2198988
Author(s):  
Nur Syakirah Rabiha Rosman ◽  
Noor Aniza Harun ◽  
Izwandy Idris ◽  
Wan Iryani Wan Ismail
Keyword(s):  
Electrical Conductivity ◽  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Metal Nanoparticles ◽  
Current Trend ◽  
Biological Properties ◽  
Noble Metal Nanoparticles ◽  
Current Application ◽  
Physical Chemical ◽  
Physical And Chemical

The emergence of technology to produce nanoparticles (1 nm – 100 nm in size) has drawn significant researchers’ interests. Nanoparticles can boost the antimicrobial, catalytic, optical, and electrical conductivity properties, which cannot be achieved by their corresponding bulk. Among other noble metal nanoparticles, silver nanoparticles (AgNPs) have attained a special emphasis in the industry due to their superior physical, chemical, and biological properties, closely linked to their shapes, sizes, and morphologies. Proper knowledge of these NPs is essential to maximise the potential of biosynthesised AgNPs in various applications while mitigating risks to humans and the environment. This paper aims to critically review the global consumption of AgNPs and compare the AgNPs synthesis between conventional methods (physical and chemical) and current trend method (biological). Related work, advantages, and drawbacks are also highlighted. Pertinently, this review extensively discusses the current application of AgNPs in various fields. Lastly, the challenges and prospects of biosynthesised AgNPs, including application safety, oxidation, and stability, commercialisation, and sustainability of resources towards a green environment, were discussed.

scholarly journals Application of biosynthesized metal nanoparticles in electrochemical sensors

2021 ◽  
pp. 77-77
Author(s):  
Totka Dodevska ◽  
Dobrin Hadzhiev ◽  
Ivan Shterev ◽  
Yanna Lazarova
Keyword(s):  
Green Synthesis ◽  
Metal Nanoparticles ◽  
Electrochemical Sensors ◽  
Dynamic Range ◽  
Limit Of Detection ◽  
Cost Effective ◽  
Electrochemical Sensing ◽  
Synthesis Methods ◽  
Range Limit ◽  
Wide Range

Recently, the development of eco-friendly, cost-effective and reliable methods for synthesis of metal nanoparticles has drawn a considerable attention. The so-called green synthesis, using mild reaction conditions and natural resources as plant extracts and microorganisms, has established as a convenient, sustainable, cheap and environmentally safe approach for synthesis of a wide range of nanomaterials. Over the past decade, biosynthesis is regarded as an important tool for reducing the harmful effects of traditional nanoparticle synthesis methods commonly used in laboratories and industry. This review emphasizes the significance of biosynthesized metal nanoparticles in the field of electrochemical sensing. There is increasing evidence that green synthesis of nanoparticles provides a new direction in designing of cost-effective, highly sensitive and selective electrode-catalysts applicable in food, clinical and environmental analysis. The article is based on 157 references and provided a detailed overview on the main approaches for green synthesis of metal nanoparticles and their applications in designing of electrochemical sensor devices. Important operational characteristics including sensitivity, dynamic range, limit of detection, as well as data on stability and reproducibility of sensors have also been covered. Keywords: biosynthesis; green synthesis; nanomaterials; nanotechnology; modified electrodes

scholarly journals Process Optimization for Green Synthesis of Silver Nanoparticles Using Indonesian Medicinal Plant Extracts

Processes ◽  
2020 ◽  
Vol 8 (8) ◽  
pp. 998
Author(s):  
Kartini Kartini ◽  
Amarisa Alviani ◽  
Dia Anjarwati ◽  
Adinda Finna Fanany ◽  
Johan Sukweenadhi ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Medicinal Plant ◽  
Green Synthesis ◽  
Plant Extracts ◽  
Curcuma Longa ◽  
Scale Up ◽  
Pharmaceutical Products ◽  
Metal Nanoparticle ◽  
Phyllanthus Niruri ◽  
Medicinal Plant Extracts

Silver nanoparticles (AgNPs) are an interesting metal nanoparticle that can be incorporated into pharmaceutical products, including for diabetic foot ulcers as an antimicrobial agent. Green synthesis of AgNPs using plant extracts has been drawing much attention as it is simple, eco-friendly, stable, and cost-effective. This present study was performed to evaluate the potential of three Indonesian medicinal plant extracts, namely Phyllanthus niruri (PN), Orthosiphon stamineus (OS), and Curcuma longa (CL), as reducing and capping agents in the green synthesis of AgNPs, and to optimize their concentrations. Based on the yields and characteristics of the formed nanoparticles, which were analyzed using a UV-Vis spectrophotometer, particle size analyzer, scanning electron microscope, and X-ray diffractometer, Phyllanthus niruri extract at a concentration of 0.5% was concluded as the best extract in the green synthesis of AgNPs. It is thereby a prospective reducing and capping agent for further scale-up studies.

scholarly journals Plant Extract Mediated Synthesis of Transition Metal Nanoparticles: A Review

2021 ◽  
Vol 9 (VI) ◽  
pp. 1989-1995
Author(s):  
Nimish Kumar
Keyword(s):  
Transition Metal ◽  
Metal Nanoparticles ◽  
Plant Extract ◽  
Nanoparticle Synthesis ◽  
Green Technology ◽  
Synthesis Methods ◽  
Transition Metal Nanoparticles ◽  
Plant Parts ◽  
Wide Range ◽  
Potential Applications

Green technology is a fast evolving scientific topic that has attracted a lot of attention in recent years due to its wide range of applications. It is a multidisciplinary field that is safe, non-hazardous, and ecologically friendly, in contrast to chemical and physical approaches for nanoparticle synthesis. Because the existing biomolecules in plant extract act as both a reducing and capping agent, the produced nanoparticles are very stable. As a result, nanoparticles that have been manufactured have a wide range of potential applications in the environmental and biomedical domains. The current report contains current information on numerous green synthesis methods that rely on different plant parts for green transition metal nanoparticles synthesis.

scholarly journals Green Synthesis of Copper Nanoparticles, Characterization and Their Applications

2020 ◽  
pp. 10-24
Author(s):  
Swathi Pavithran ◽  
Manikantan Pappuswamy ◽  
Yamuna Annadurai ◽  
Vijaya Anand Armugam ◽  
Thirunavukkarasu Periyaswamy
Keyword(s):  
Green Synthesis ◽  
Copper Nanoparticles ◽  
Dye Degradation ◽  
Biological Effects ◽  
Nanoparticle Synthesis ◽  
Nanoparticles Characterization ◽  
Bacteria And Fungi ◽  
Analytical Tools ◽  
Physical And Chemical

Nanotechnology is one of the upcoming topics in the present era. Nanoparticles are synthesized by physical and chemical methods but limitations are due to their toxicity. Hence, green synthesis is more on demand which involves the use of plants, bacteria and fungi. In this review, copper nanoparticle synthesis is focused which is economically beneficial and eco-friendly when compared to other metal nanoparticles. Copper nanoparticles are used in diverse fields such as biomedicine, pharmaceuticals, bioremediation, molecular biology, bioengineering, genetic engineering, dye degradation, catalysis, cosmetics and textiles. Structural properties and biological effects of copper nanoparticles have promising affectivity in the field of life sciences. The characterization of biogenic copper nanoparticles by number of analytical tools for their compositional, morphological and topographical features has also been discussed.

Address of the President Lord Todd, O. M. at the Anniversary Meeting, 1 December 1980

1980 ◽  
Vol 211 (1182) ◽  
pp. 1-13 ◽  
Keyword(s):  
Usnic Acid ◽  
Chemical Properties ◽  
Wide Range ◽  
One Step ◽  
Oxidative Processes ◽  
The One ◽  
Physical And Chemical ◽  
Biosynthetic Studies ◽  
And Chemical Properties

The Copley Medal is awarded to Sir Derek Barton, F. R. S. Among Sir Derek Barton's many distinguished contributions to organic chemistry, outstanding is his conception and development of conformational analysis, which represents the most important advance in this century in the understanding of the stereochemistry of organic compounds, and for which he received a Nobel Prize in 1969. Originally devised for cyclohexane derivatives, the concept was rapidly extended to other ring systems, and is of major importance in interpretation of the physical and chemical properties of a wide range of natural products. Sir Derek has also contributed greatly to the understanding of biosynthesis, and in many cases demonstrated the validity of his hypotheses by labelling experiments in vivo . In particular, his ideas on the nature of phenolic coupling, involving one-electron oxidative processes, formed the basis of a very large number of successful biosynthetic studies, especially in the alkaloid field. He has also applied his ideas to the simulation of natural biosynthetic sequences, the one-step synthesis of the complex usnic acid from a simple monocyclic precursor providing one of the most striking examples.

A survey on analytical methods for the characterization of green synthesized nanomaterials

2021 ◽  
Vol 22 ◽  
Author(s):  
Paolo Nicolás Catalano ◽  
Ratiram Gomaji Chaudhary ◽  
Martín Federico Desimone ◽  
Pablo Luis Santo-Orihuela
Keyword(s):  
Green Chemistry ◽  
Green Synthesis ◽  
Exponential Growth ◽  
Analytical Methods ◽  
Characterization Methods ◽  
Correct Performance ◽  
Wide Range ◽  
Inorganic Nanomaterials ◽  
Great Development

: Nowadays, nanotechnologies are well established and the uses of a great variety of nanomaterials show exponential growth. The development of green synthesis procedures experienced a great development thanks to the contribution of researchers of diverse origins. The versatility of green chemistry allows producing a wide range of organic and inorganic nanomaterials with numerous promising applications. In all cases it is of paramount importance to carefully characterize the resulting nanomaterials because their properties will determine its correct performance to accomplish the function to which they were synthesized or even their detrimental effects like nanotoxicological behavior. This review provides an overview of frequently employed characterization methods and their applications for green synthesized nanomaterials. However, while several different nanoscale materials and their associated green construction methodology are being developed, other important techniques would be extensively incorporated to this field soon. The aim is to encourage researchers in the field to employ a variety of these techniques for achieving an exhaustive characterization of new nanomaterials and for contributing to the development of validated green synthesis procedures.

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