Author
Rajibul A. Laskar
Bio: Rajibul A. Laskar is an academic researcher from Visva-Bharati University. The author has contributed to research in topics: Galangin & Pinocembrin. The author has an hindex of 8, co-authored 11 publications receiving 980 citations.
Topics: Galangin, Pinocembrin, Nickel(II) chloride, Propolis, DPPH
Papers
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TL;DR: The results suggest that the reduction of metal ions and stabilization of the resultant particles in the first two solutions involved the same class of biomolecules, including flavonoids, which were present in comparable amounts in both the tea leaf broth and ethyl acetate extract, but are absent in the CH(2)Cl( 2) extract of tea leaves.
494 citations
TL;DR: The superb efficiency of aqueous extract of dried leaves of mahogany in the rapid synthesis of stable monometallic Au and Ag nanoparticles and also Au/Ag bimetallic alloy nanoparticles having spectacular morphologies is demonstrated.
200 citations
TL;DR: In this paper, the antioxidant activity of aqueous and ethanol extracts of Indian propolis (AEP and EEP, respectively) was measured by chemical and electrochemical assays, whereas, cyclic voltammetry was used as the electrochemical assay.
120 citations
TL;DR: It is demonstrated for the first time the excellent efficiency of ethanol and water extracts of a natural, non-toxic material, Indian propolis and two of its chemical constituents, pinocembrin and galangin in the rapid synthesis of stable Ag and Au nanoparticles having wide spectrum of fascinating morphologies.
109 citations
TL;DR: A detailed study was performed on the antioxidant activity of the aqueous and methanol extracts (AED and MED respectively) of the stem bark of the plant, Dalbergia sissoo Roxb.
77 citations
Cited by
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TL;DR: Most of the plants used in metal nanoparticle synthesis are shown in this article, and the advantages of using plant and plant-derived materials for biosynthesis of metal nanoparticles have interested researchers to investigate mechanisms of metal ions uptake and bioreduction by plants, and to understand the possible mechanism of nanoparticle formation in plants.
2,424 citations
TL;DR: In this paper, a review explores the huge plant diversity to be utilized towards rapid and single step protocol preparatory method with green principles over the conventional ones and describes the antimicrobial activities of silver nanoparticles.
1,904 citations
TL;DR: The methods of making nanoparticles using plant extracts are reviewed, methods of particle characterization are reviewed and potential applications of the particles in medicine are discussed.
1,706 citations
TL;DR: This review summarized the fundamental processes and mechanisms of “green” synthesis approaches, especially for metal and metal oxide nanoparticles using natural extracts and explored the role of biological components, essential phytochemicals (e.g., flavonoids, alkaloids, terpenoids, amides, and aldehydes) as reducing agents and solvent systems.
Abstract: In materials science, “green” synthesis has gained extensive attention as a reliable, sustainable, and eco-friendly protocol for synthesizing a wide range of materials/nanomaterials including
metal/metal oxides nanomaterials, hybrid materials, and bioinspired materials. As such, green synthesis is regarded as an important tool to reduce the destructive effects associated with the traditional methods of synthesis for nanoparticles commonly utilized in laboratory and industry. In this review, we summarized the fundamental processes and mechanisms of “green” synthesis approaches, especially for metal and metal oxide [e.g., gold (Au), silver (Ag), copper oxide (CuO), and zinc oxide (ZnO)] nanoparticles using natural extracts. Importantly, we explored the role of biological components, essential phytochemicals (e.g., flavonoids, alkaloids, terpenoids, amides, and aldehydes) as reducing agents and solvent systems. The stability/toxicity of nanoparticles and the associated surface engineering techniques for achieving biocompatibility are also discussed. Finally, we covered applications of such synthesized products to environmental remediation in terms of antimicrobial activity, catalytic activity, removal of pollutants dyes, and heavy metal ion sensing.
1,175 citations
Journal Article•
TL;DR: An overview of silver nanoparticle preparation by physical, chemical, and biological synthesis is presented to reflect on the current state and future prospects, especially the potentials and limitations of the above mentioned techniques for industries.
Abstract: Silver nanoparticles (NPs) have been the subjects of researchers because of their unique properties (e.g., size and shape depending optical, antimicrobial, and electrical properties). A variety of preparation techniques have been reported for the synthesis of silver NPs; notable examples include, laser ablation, gamma irradiation, electron irradiation, chemical reduction, photochemical methods, microwave processing, and biological synthetic methods. This review presents an overview of silver nanoparticle preparation by physical, chemical, and biological synthesis. The aim of this review article is, therefore, to reflect on the current state and future prospects, especially the potentials and limitations of the above mentioned techniques for industries.
1,141 citations