Role of plant (tulasi, neem and turmeric) extracts in defining the morphological, toxicity and catalytic properties of silver nanoparticles

Vankdoth, Sasikala; Velidandi, Aditya; Sarvepalli, Mounika; Vangalapati, Meena

doi:10.1016/j.inoche.2022.109476

Cited by 19 publications

(3 citation statements)

References 77 publications

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“…Among all the metal NPs reported, silver nanoparticles (AgNPs; SNPs) were found to be suitable for their multi-purpose applicability, particularly degradation of textile dyes [21][22][23]. Compared to other noble metal NPs, SNPs are economical, can be easily synthesized in different shapes and sizes [3,24]. Parameters involved in the synthesis of SNPs are of great concern which directly affects their performance [3,4].…”

Section: Nano-catalyst Concentrationmentioning

confidence: 99%

Poly-Extract Synthesized Silver Nanoparticles Catalysed Rhodamine-B and Methyl Orange Dye Degradation: Influence of Physicochemical Parameters and their Recyclability

2022

NanoWorld J

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Poly-extract (equal ratio of tulasi (leaf ), neem (leaf ) and turmeric (rhizome) aqueous extracts) was used for the synthesis of silver nanoparticles (SNPs). The SNPs were then used for the degradation of rhodamine-B (RhB) and methyl orange (MO) in presence of sodium borohydride (SBH; reducing agent) as nano-catalysts. Influence of four physicochemical parameters such as: nano-catalyst and reducing agent concentration along with temperature and pH of the degradation process were investigated. Maximum degradation was observed at 100 µg (SNPs amount), 20 mg (SBH amount) and at 70 °C for both RhB and MO dyes. Whereas, pH 8 and pH 6 were found to optimum for RhB and MO dyes, respectively. At optimum conditions, SNPs showed 97.41 ± 2.39% degradation with 0.1554 min -1 under 24 min and 97.32 ± 2.12% degradation with 0.5017 min -1 under 7 min for RhB and MO dyes, respectively. SNPs further showed good recyclability, with 84.22 ± 2.19% (under 7 min) MO dye degradation even after Cycle 6 with 0.2071 min -1 as degradation rate. However, SNPs showed low recyclability for RhB dye degradation with only 71.05 ± 2.14% (under 24 min) degradation after Cycle 4 with 0.0556 min -1 . It was observed that degradation kinetics was following pseudo-first order kinetics.

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Section: Nano-catalyst Concentrationmentioning

confidence: 99%

Poly-Extract Synthesized Silver Nanoparticles Catalysed Rhodamine-B and Methyl Orange Dye Degradation: Influence of Physicochemical Parameters and their Recyclability

2022

NanoWorld J

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“…Surface molecules can cause high hardness in metals and also make electronic devices and drugs highly efficient (1). Nanoparticles in nanotechnology in medicine and pharmaceuticals Electrics/electronics, food, textiles, environment and energy, materials and manufacturing industries (3,(7)(8)(9). Nanomaterials can provide solutions to various environmental problems through technological innovations and advances in energy storage, medicine, and wastewater treatment (9)(10)(11)(12).…”

Section: Introductionmentioning

confidence: 99%

Biogenic Synthesis and Characterization of Gold Nanoparticles from Morus alba L. Leaves by Microwave Extraction Method

Serdar

2024

Journal of the Turkish Chemical Society Section A: Chemistry

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The aim of this study was to investigate the rapid, simple, and inexpensive biosynthesis and characterization of gold nanoparticles (AuNPs) an extract from leaves of Morus alba L. The generated gold nanoparticles were characterized by UV-Vis spectroscopy, TEM, FT-IR and zeta-sizer. For the biogenesis of gold nanoparticles, Morus alba L. (Mulberry) leaves and HAuCl4.3H2O solution were utilized as the starting ingredients. Fresh leaves of Morus alba L. were collected from Turkey (Trabzon). 100 mL of distilled water was mixed with 10 g of dried material for 120 minutes. The mixture was then extracted using a laboratory microwave for 4 minutes at 600 W. For the biosynthesis of AuNPs, different amounts 100 ml of (0.5 mM, 1 mM) aqueous HAuCl4.3H2O solution of leaf extract (0.5 and 1 mL) were mixed with HAuCl4. 3H2O solution, and then the mixture was placed in a household microwave at 90 W for 1 to 30 minutes. UV-vis spectroscopy, TEM, FT-IR and zeta-sizer were performed to characterize the produced gold nanoparticles. UV-Vis absorption spectra was measured using a Shimadzu UV-1240 UV-Vis spectrophotometer with a wave length range of 300 to 800 nm. The development of AuNPs was indicated by the mixture's purple-red colour. From the results of zetasizer study, the average particle size of the AuNPs was 78.95±0.57 nm, the zeta potential was 12.9±0.808 mV, and the polydispersity index was 0.321±0.004. When the AuNP solutions were kept in the refrigerator, their UV-Vis absorption spectra rarely changed and remained stable for around 2 to 2.5 months.

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“…However, research appraisal should be carried out to validate the formulation, precise function and biocompatibility of silver oxide nanoparticles against various diseases [13]. Numerous physical and chemical methods have been exploited to prepare silver oxide nanoparticles, like sol-gel, solvothermal, micro emulsion, hydrothermal, egg white method, chemical precipitation, biosurfactantmediated emulsions, and microwave irradiation [14][15][16][17]. Among these methods, chemical precipitation is one of the simplest and cost effective methods owing to the varied preparation conditions parameters, extensive production, ease control of size, divergent morphology, homogeneity and composition of nanoparticles, without any mechanical, vacuum conditions or microwave treatments [18].…”

Section: Introductionmentioning

confidence: 99%

Empowerment the antibacterial activity of Silver Oxide nanoparticles using Woodfordia Fruticosa flower extract

et al. 2023

Int. Res. J. multidiscip. Technovation

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The undeniable importance of human well-being microorganisms to strengthen the antimicrobial resistance behavior of inorganic metals has created an avenue towards the development of green nanotechnology. However, numerous physiological issues and challanges need to be addressed from the aspects of microbiological and nanotechnological. In this present work, an endeavour has been made to synthesis silver oxide nanoparticles using Woodfordia Fruticosa flower extracts as reducing agent and also examined their antibacterial activity against S. aureus and E. Coli. The utmost antibacterial activity was obtained for the Ag2O nanoparticles prepared with extract against S. Aureus than E. Coli.

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Role of plant (tulasi, neem and turmeric) extracts in defining the morphological, toxicity and catalytic properties of silver nanoparticles

Cited by 19 publications

References 77 publications

Poly-Extract Synthesized Silver Nanoparticles Catalysed Rhodamine-B and Methyl Orange Dye Degradation: Influence of Physicochemical Parameters and their Recyclability

Poly-Extract Synthesized Silver Nanoparticles Catalysed Rhodamine-B and Methyl Orange Dye Degradation: Influence of Physicochemical Parameters and their Recyclability

Biogenic Synthesis and Characterization of Gold Nanoparticles from Morus alba L. Leaves by Microwave Extraction Method

Empowerment the antibacterial activity of Silver Oxide nanoparticles using Woodfordia Fruticosa flower extract

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