Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 31 for “"Green synthesis"”.
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Green synthesis of Europium (III) Oxide nanoparticles using Hibiscus sabdariffa flower extract
… inexpensive and nontoxic chemical use in the synthesis protocol in order to obtain biocompatible and harmless nanoparticles. Green chemistry approach is the eco-friendly process which has taken the researchers attention globally due to its advantages over conventional methods. This ecological …
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Green Synthesis and Evaluation of Catalytic Activity of Sugar Capped Gold Nanoparticles
… Most of the current methods available for the synthesis of gold nanoaprticles (GNPs) suffer from the challenges of polydispersity, stability and use of toxic and harmful chemicals. To overcome these limitations of conventional methods, in our present study, we made an attempt to design a method …
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Green synthesis, characterization and laser irradiation of silver nanoparticles and its bimetallic nanoparticles
Green synthesis of metallic nanoparticles offered an alternative and eco-friendly method for fabricating nanoparticles compared to chemical and physical methods. The current study aimed to manipulate silver nanoparticles (Ag NPs) synthesized in Murraya koenigii leaf extract to fabricate …
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ENZYME ENGINEERING AND GREEN SYNTHESIS OF N-ACYL GLYCINE BIOSURFACTANTS FROM RENEWABLE RAW MATERIALS
Amide syntheses remain a key challenging green chemistry reaction. For instance, green synthesis of N-acyl glycines as biosurfactants and therapeutics is highly desirable to replace chemical pathways using toxic phosgene. Herein, we report a novel concept for enzymatic amidation in an aqueous …
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Green synthesis of copper nanoparticles using Lannea discolor (Sond.) Engl. and evaluation of their biological efficacy
… cancer cell line. The study also focuses on the green synthesis of copper, gold, and silver nanoparticles using Lannea discolor plant extracts as reducing and stabilizing agents. Biosynthesis of copper, gold, and silver nanoparticles was executed using the different extracts at temperatures of 25 …
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Green synthesis and characterisation of metal-based nanoparticles using Kombucha tea SCOBY yeast-based bioflocculant and their application in wastewater treatment
… explored as a stabilizing agent in the green synthesis of copper, silver, and iron nanoparticles, with potential applications in wastewater treatment. The approach prioritizes safety, lack of secondary pollution, and biodegradability in environmental contexts. In the production of the …
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Green synthesis and characterization of gold nanoparticles from capparis sepiaria-tabernaemontana elegans cocktail and investigation of their biological effects in vitro.
… optical properties. this study reports on the green synthesis and characterization of aunps synthesized using an aqueous extract of capparis sepiariatabernaemontana elegans (cste) and the investigation antibacterial and wound healing effects of the cste-aunps against amr pathogens, such as …
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Green synthesis of silver nanoparticles using Moringa oleifera extracts and their evaluation against antibiotic resistant strains of escherichia coli and staphylococcus aureus
… For this reason, researchers are engaged in synthesis of nanoparticles using medicinal plants to solve the problem of antibiotic resistance in bacteria. The aim of the study was to synthesize silver nanoparticles (AgNPs) using M. oleifera extracts and compare antibacterial activities of AgNPs …
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Bioinspired and green synthesis of nanoparticles for advanced wound care applications [Sintesi bioispirata e verde di nanoparticelle per applicazioni avanzate nella cura delle ferite]
Here’s a polished translation of the text into Italian: Negli ultimi decenni, i metodi di sintesi chimica bioispirati e sostenibili hanno attirato notevole attenzione come approcci innovativi e sostenibili per la preparazione di nanoparticelle multifunzionali destinate ad applicazioni nel campo …
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Sustainable Nanotechnology: Life Cycle Thinking in Gold Nanoparticle Production and Recycling
… studies were focused on three aspects of AuNP synthesis: 1) the use of bio-based ("green") reducing agents; 2) the potential for recycling gold from nanomaterial waste; and, 3) the reduction of the life cycle impacts of AuNP production by conducting the synthesis at reduced temperature. The LCA …
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Single Step Synthesis of Antibiotic Kanamycin Embedded Gold Nanoparticles for Efficient Antibacterial Activity
… a single step, single phase, and bio-friendly (green synthesis) procedure. The synthesized Kanamycin-GNPs (Kan-GNPs) were spherical in shape and had a size range of 15 ± 3 nm. The chosen kanamycin is an aminoglycosidic antibiotic that is isolated from Streptomyces kanamyceticus. These special …
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Rapid and green fabrication of psuedocapacitor electrode by utilizing novel ULPING technique
… manufacturing method is efficient and is deemed green because it doesn't require chemical precursors or produce waste. In this work, we investigate multiple parameters of a pulsed laser in the formation of an oxide layer directly grown on the irradiated surface of a transition metal. We used our …
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ESTABLISHING PTERIDINE METABOLISM IN A BREAST CANCER CELL MODEL AND QUANTIFICATION OF SILVER NANOPARTICLE INTERACTIONS WITH YEAST CELLS USING MASS SPECTROMETRY
… yeast cells, a potential candidate for green manufacturing of AgNPs. Rapid quantification of cell concentration, silver concentration per cell, and the profile of AgNP distribution in a cell population was used to evaluate dose time, concentration, and size impacts on AgNP uptake and to …
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Addressing electrode-specific degradation in the production and performance of electrochemical energy storage systems
… storage devices. Specifically, it investigates a green synthesis technique for high-performance pseudocapacitor electrodes and uses machine learning algorithms to predict and prevent degradation mechanisms in lithium-ion batteries. The research demonstrates the effectiveness of the laser …
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HARNESSING NATURE’S MACHINERY: CHARACTERIZATION OF BACTERIAL BIOSYNTHETIC ENZYMES FOR CHALLENGES IN ORGANIC SYNTHESIS
… for humans to access via traditional organic synthesis. This dissertation presents three distinct projects involving the characterization of bacterial enzymes from secondary metabolism and their applications in green synthesis. In Chapters 1-3, we discuss the identification of enzymes involved …
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Multimodal in-situ spectroscopy of novel enzyme mimics with optofluidic microreactors
… harmful environmental pollutants and driving the green synthesis of valuable organic products. Despite their significant potential, the current performance of photocatalysts is insufficient for widespread deployment in sustained practical applications. This has created the demand to design and …
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The adsorption of bidens pilosa dye molecules onto TiO2 nanoparicle surfaces for optimization of light harvesting efficiency in dye sensitized solor cell: an experimental and theory study
… friendliness. The current study describes the green synthesis of TiO2 nanoparticles as well as their characterization using ultraviolet-visible, Fourier transformed infrared spectroscopy and X-ray diffraction. Furthermore, the study used Density Functional Theory to describe the optical …
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Investigating the therapeutic effects of silver and gold nano particles capped with selected medicinal plants against tuberculosis
… using crude extracts through the process of green synthesis; and were characterized by Ultraviolet-Visible spectrophotometry (UV-VIS), and transmission electron microscopy (TEM). Metabolites present in the plant extracts were profiled using liquid chromatography mass spectrometry (LC-MS). …
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Polysulfone mixed matrix membranes with biosynthesis nanoparticles: enhancement of interface compatibility and antibacterial membrane seperation process
This study investigates the effect of biosynthesis silver nanoparticles (bio-AgNPs) structure towards PSf membranes performance. The addition of bio-AgNPs in the membrane formulation was aimed to improve antibacterial properties and interface compatibility of the polymer mixed matric membrane. In …
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Antioxidant and anticholinesterase activities of centella asiatica phenolic extract-mediated gold nanoparticles
In the present study, the green synthesis and optimization of gold nanoparticles (GNPs) using C. asiatica phenolic extract (CAP) were reported followed by the characterization with UV-vis, FTIR, Zeta potential, FESEM, EDX and XRD analyses. Total phenolic and flavonoid contents (TPC and TFC), …
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