Author: Sanjay Kalra
Publisher:
ISBN:
Category : Green chemistry
Languages : en
Pages : 136

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Author: Farid Badria
Publisher: GRIN Verlag
ISBN: 3346083454
Category : Science
Languages : en
Pages : 196

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Document from the year 2017 in the subject Chemistry - Bio-chemistry, Mansoura University, language: English, abstract: Forty-two medicinal plants were collected depending on their availability on Egypt. These plant were extracted and screened for their activity towards green synthesis of AgNPs. A new modified method was used in order to screen large number of extracts in short time (high throughput screening). In this method, the synthesized nanoparticles were evaluated in using 96-well plate which is transparent to facilitate the color monitoring and easy to be read spectrophotometrically using microplate reader. The green synthesis activity by the different plant extracts was monitored and evaluated by color change and UV-Vis absorption at time intervals. Out of these 42 plants, only 3 plants viz.,Pyllanthusemblicafruits, Psidium guajava leaves and Lawsoniainermisleaves, showed high AgNPs synthetic activity. The most active plant extracts were further partitioned with ethyl acetate. The results showed that the EtOAc fraction of the three active plants showed superior AgNPs green synthesis over their remaining aqueous. Thus, chromatographic columns were used to isolate the active compounds from the EtOAc fraction of each plant. Metal nanoparticles synthesis is a leading topic of research in modern material science owing to their distinctive potential applications in the field of electronic, optoelectronic, information storage and Health care. Among the all noble metal nanoparticles, silver nanoparticles are one the main products in the field of nanotechnology which has acquired limitless attention due to their unique properties such as chemical stability, good conductivity, catalytic and most important antibacterial, antiviral and antifungal activities. Nevertheless, there is still need for economic commercially viable as well as environmentally clean synthesis route to synthesize the silver nanoparticles.

Author: Olayemi J. Fakayode
Publisher:
ISBN:
Category : Science
Languages : en
Pages :

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Polymer-coated noble metal nanoparticles are currently of particular interest to investigators in the fields of nanobiomedicine and fundamental biomaterials. These materials not only exhibit imaging properties in response to stimuli but also efficiently deliver various drugs and therapeutic genes. Even though a large number of polymer-coated noble metal nanoparticles have been fabricated over the past decade, most of these materials still present some challenges emanating from their synthesis. The metal nanoparticles when encapsulated in a polymer and taken up by human cells might show a lower degree of toxicity; however, the degree of toxicity for some of the starting materials and precursors has raised serious concerns. Hence, there is a need to implement the principle of green chemistry in the synthesis of nanomaterials. The use of environmentally benign materials for the synthesis of metal nanoparticles provides numerous benefits ranging from biocompatibility, availability, cost-effectiveness, amenable scale-up to eco-friendliness. The biopolymer-based nanovehicles have been found to be more suitable in the field of nanotechnology owing to their high reproducibility, ease of manufacture, functional modification and safety (they are not carcinogenic). Unlike synthetic polymers where the raw material can be derived from petrochemicals or chemical industrial processes, biopolymers are produced from renewable resources such as plant and/or living organism. They are degradable by natural processes down to elemental entities that can be resorbed in the environment. Furthermore, they can also be modified to serve a particular purpose which explains the myriad of their potential applications. The macromolecular chain of these biopolymers possesses a large number of hydroxyl groups which can easily complex with metal ions. Additionally, these biopolymers also contain supramolecular structures that can lead to new functionalities of their composites with metal and semiconductor nanoparticles. In this chapter, a comprehensive discussion on different biopolymers, green synthesis of noble metal nanostructures, mechanisms, characterization and application in various fields is presented.

Author: K. Rani
Publisher:
ISBN: 9781805290674
Category : Philosophy
Languages : en
Pages : 0

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The demand for eco-friendly power generation is increasing due to concerns about the impact of traditional power generation methods on the environment. Nanoparticles have been identified as a potential solution to this problem. In particular, non-noble metal nanoparticles have been found to have excellent electrocatalytic properties, making them a promising material for boosting eco-friendly power generation. The use of nanoparticles for electrocatalysis in power generation has been extensively studied in recent years. Nanoparticles have been shown to enhance the performance of fuel cells, batteries, and solar cells. However, the high cost and scarcity of noble metals such as platinum have limited their widespread use. Non-noble metal nanoparticles, on the other hand, are abundant and relatively cheap, making them a more attractive alternative. Electrocatalysis is the process of using a catalyst to accelerate an electrochemical reaction. In the context of power generation, electrocatalysis is used to improve the efficiency of energy conversion. Non-noble metal nanoparticles have been found to be effective electrocatalysts due to their high surface area, which allows for more active sites for electrochemical reactions. The synthesis of non-noble metal nanoparticles using eco-friendly and sustainable methods is an important area of research. This is where green chemistry comes into play. Green chemistry is a set of principles and practices aimed at reducing the environmental impact of chemical processes. The use of eco-friendly materials, renewable resources, and non-toxic chemicals is an essential aspect of green chemistry. Nanotechnology offers a powerful tool for the development of eco-friendly power generation technologies. Nanoparticles can be synthesized using sustainable and eco-friendly methods to improve their electrocatalytic properties. The use of non-noble metal nanoparticles in power generation has the potential to significantly reduce the cost and environmental impact of energy conversion. In conclusion, boosting eco-friendly power generation with nanoparticles is a promising area of research. The use of non-noble metal nanoparticles as electrocatalysts has been found to be effective in improving energy conversion efficiency. By using eco-friendly materials and sustainable manufacturing processes, we can develop a more sustainable and environmentally friendly energy system.

Author: Suvardhan Kanchi
Publisher: John Wiley & Sons
ISBN: 1119418232
Category : Technology & Engineering
Languages : en
Pages : 716

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This groundbreaking book uniquely focuses on the exploration of the green synthesis of metal nanoparticles and their characterization and applications. Metal nanoparticles are the basic elements of nanotechnology as they are the primary source used in the design of nanostructured devices and materials. Nanomaterials can be manufactured either incidentally, with physical or chemical methods, or naturally; and the high demand for them has led to their large-scale production by various toxic solvents or high energy techniques. However, due to the growing awareness of environmental and safety issues, the use of clean, nontoxic and environment-friendly ways to synthesize metal nanoparticles has emerged out of necessity. The use of biological resources, such as microbes, plant parts, vegetable wastes, agricultural wastes, gums, etc., has grown to become an alternative way of synthesizing metal nanoparticles. This biogenic synthesis is green, environmentally friendly, cost-effective, and nontoxic. The current multi-authored book includes recent information and builds a database of bioreducing agents for various metal nanoparticles using different precursor systems. Green Metal Nanoparticles also highlights different simple, cost-effective, environment-friendly and easily scalable strategies, and includes parameters for controlling the size and shape of the materials developed from the various greener methods.

Author: Margarita Sanchez-Dominguez
Publisher: Elsevier
ISBN: 0128017589
Category : Technology & Engineering
Languages : en
Pages : 538

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Nanocolloids: A Meeting Point for Scientists and Technologists presents an easy-to-read approach to current trends in nanoscale colloid chemistry, which offers relatively simple and economically feasible ways to produce nanomaterials. Nanocolloids have been the subjects of major development in modern technology, with many current and future applications. The book helps scientists and technologists to understand the different aspects of modern nanocolloid science. It outlines the underlying fundamental principles of nanocolloid science and covers applications ranging from emulsions to dispersions and suspensions. You will find details on experimental techniques and methods for the synthesis and characterization of nanocolloids, including the latest developments in nanoemulsions and nanoparticles. Edited by leading academics with over 10 years’ experience in the field of colloid and surfactant science Each chapter is authored by recognized experts in the field Outlines the underlying fundamental science behind nanocolloids Provides comprehensive coverage of current topics and potential applications in nanocolloid science Presents a multidisciplinary approach to help chemical engineers, chemists, physicists, materials scientists and pharmacologists, form an in-depth understanding of nanocolloid science

Author: Sandeep Kumar Verma
Publisher: Elsevier
ISBN: 0323898815
Category : Science
Languages : en
Pages : 706

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CAC series highlights new advances in the field. This Volume 94 presents interesting chapters on the recent advances in the role of nanoparticles in plant biotechnology. Each chapter is written by international experts in the respective fields. Provides the authority and expertise of leading contributors from an international board of authors. Presents the latest release in the Comprehensive Analytical Chemistry series Updated release includes the latest information on Biosynthesized nanomaterials

Author: Ashutosh Kumar Shukla
Publisher: Elsevier
ISBN: 0081025807
Category : Technology & Engineering
Languages : en
Pages : 552

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Green Synthesis, Characterization and Applications of Nanoparticles shows how eco-friendly nanoparticles are engineered and used. In particular, metal nanoparticles, metal oxide nanoparticles and other categories of nanoparticles are discussed. The book outlines a range of methodologies and explores the appropriate use of each. Characterization methods include spectroscopic, microscopic and diffraction methods, but magnetic resonance methods are also included as they can be used to understand the mechanism of nanoparticle synthesis using organisms. Applications covered include targeted drug delivery, water purification and hydrogen generation. This is an important research resource for those wishing to learn more about how eco-efficient nanoparticles can best be used. Theoretical details and mathematical derivations are kept to a necessary minimum to suit the need of interdisciplinary audiences and those who may be relatively new to the field. Explores recent trends in growth, characterization, properties and applications of nanoparticles Gives readers an understanding on how they are applied through the use of case studies and examples Assesses the advantages and disadvantages of a variety of synthesis and characterization techniques for green nanoparticles in different situations

Author: Quaiser Saquib
Publisher: Springer Nature
ISBN: 9811551790
Category : Medical
Languages : en
Pages : 316

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Book Description
This book describes various strategies for the synthesis of green nanoparticles using plant extracts and microbes, including the advantages and disadvantages of different methods and their applications. After discussing strategies for and the potential of green synthesis of noble metal nanoparticles, it highlights the role of the solvent system. The book then explores the stability/toxicity of nanoparticles and the associated-surface engineering techniques for achieving biocompatibility, and examines the antimicrobial efficacy of green nanoparticles with regard to various bacterial pathogens, as well as the underlying cytotoxicity mechanisms. Lastly, the book addresses the potential applications of various green nanoparticles in cancer theranostics, and reviews a number of plant-mediated nanoparticles as potential pharmaceutical agents. Given its scope, the book will be of interest to all scientists and students wanting to learn more about the synthesis and applications of green nanoparticles.

Author: Sreekanth Thota
Publisher: John Wiley & Sons
ISBN: 352780708X
Category : Science
Languages : en
Pages : 375

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Book Description
A much-needed summary of the importance, synthesis and applications of metal nanoparticles in pharmaceutical sciences, with a focus on gold, silver, copper and platinum nanoparticles. After a brief introduction to the history of metal complexes in medicine and fundamentals of nanotechnology, the chapters continue to describe different methods for preparation of metal nanoparticles. This section is followed by representative presentations of current biomedical applications, such as drug delivery, chemotherapy, and diagnostic imaging. Aimed at stimulating further research in this field, the book serves as an reference guide for academics and professionals working in the field of chemistry and nanotechnology.