Green Synthesis of ZnO Nanoparticles via Sol-gel Method and Investigation of Its Application in Solvent-free Synthesis of 12-Aryl-tetrahydrobenzo[α]xanthene-11-one Derivatives Under Microwave Irradiation

Fardood, Saeid Taghavi; Ramazani, Ali; Moradnia, Farzaneh; Afshari, Zolfa; Ganjkhanlu, Sara; Zare, Fateme

doi:10.33945/sami/chemm.2019.6.2

Cited by 24 publications

(3 citation statements)

References 23 publications

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“…However, use of expensive reagents, lengthy and tedious process, and environmental toxicity are prime concern with these approaches [21]. Conversely, green synthesis of metal NPs follows biological routes involving bacteria, yeasts, moulds, enzymes, agricultural wastes, essential oils and plant extracts [22][23][24]. The plant-mediated green syntheses of NPs is a facile, rapid, reliable, cost-effective, eco-friendly and one-step method, and, have a considerable benefit over microbial synthesis due to prolonged process of microbial isolation and their pure culture maintenance.…”

mentioning

confidence: 99%

Green synthesis of copper nanoparticles using leaf extract of Ageratum houstonianum Mill. and study of their photocatalytic and antibacterial activities

Chandraker¹,

Lal²,

Ghosh³

et al. 2020

Nano Ex.

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The novel copper nanoparticles (CuNPs) were synthesized using aqueous leaf extract of Ageratum houstonianum Mill. (AHLE). The green synthesized AH-CuNPs have a useful dye degradation property in the existence of daylight. The photocatalytic activity of AH-CuNPs was evaluated against an azo dye congo red (CR), whereas, same NPs displayed no effect on other dyes. The CR was completely degraded within 2 h, and the reaction rate was followed by pseudo-first-order kinetics, and the rate constant was recorded 3.1× 10 −4 s −1 , (R2=0.9359). Antibacterial activity of green synthesized AH-CuNPs was studied against gram-negative bacterium Escherichia coli (MTCC no. 40), and a significant growth inhibition was recorded with 12.43±0.233 mm zone of inhibition. The AH-CuNPs were characterized through UV-visible spectroscopy, XRD, SEM, FT-IR, TEM, and zeta particle size analyzer. Ageratum houstonianum mediated green synthesized copper nanoparticles (AH-CuNPs) were cubic, hexagonal, and rectangular in shape, with average size of ∼80 nm. The optical band gap was 4.5 eV, which was investigated using UV-visible spectroscopy, and the band gap value revealed that AH-CuNPs were semiconductor materials. Abbreviations Cu Copper CuNPsCopper nanoparticles CuCl 2 Copper chloride AH Ageratum houstonianum AHLE Ageratum houstonianum leaf extract AgNPs Silver nanoparticles AH-AgNPs Ageratum houstonianum mediated bio-fabricated silver nanoparticles UV-vis UV-visible spectrophotometer FTIR Fourier transform infrared spectrum SEM Scanning electron microscopy TEM Transmission electron microscopy XRD X-ray diffraction Min. Minutes Hrs Hours MB Methylene blue MO Methyl orange Rh-B Rhodamine-B CR Congo red DDW Double distilled water 1. Introduction In recent years, metallic nanoparticles (NPs) have drawn the attention of researchers due to their significant applications in the field of material science, life science, agriculture, and pharmaceutics [1-3]. The amalgamation of biological technique with metal NPs has generated a new area of nanomedicine [4]. The unique characters of NPs like, high yield strength, high surface-to-volume ratio, rigidity, flexibility, specific magnetization, and quantum size are remarkable and contrary to bulk materials with the same chemical composition [5]. Among the metal NPs, copper nanoparticles (CuNPs) have maintained to attain public interest due to its high electrical conductivity, low electrochemical migration, magnificent solderability, high melting point [6], optical, and catalytic properties [7], being used in sensors [8], solar cells [9], information storage [10], heat transfer systems [11], textiles [12], water treatment [13], and antimicrobial coating material in surgical tools [14]. In addition, the synthesis of CuNPs is cheaper when compared to other noble metal NPs of platinum (Pt), silver (Ag), and gold (Au). Various physicochemical methods are used for the synthesis of NPs, which include thermal decomposition [15], electrochemical reduction [16], vapor deposition [17], microwave irradiation [18], so...

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confidence: 99%

Green synthesis of copper nanoparticles using leaf extract of Ageratum houstonianum Mill. and study of their photocatalytic and antibacterial activities

Chandraker¹,

Lal²,

Ghosh³

et al. 2020

Nano Ex.

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“…Numerous kinds of nanoparticles are used as antibacterial agents today. For instance, the greater solubility and release of Ag +1 ions in chitosan functionalized silver (Ag) nanoparticles resulted in improved antibacterial activity [27]. A clever antifouling agent, spherical Ag nanoparticles functionalized with core-shell magnetic chitosan microspore showed effective antibacterial action.…”

Section: Antimicrobial Aspects Of Chitosan Based Capped Nanoparticlesmentioning

confidence: 99%

Environmental implications of Chitosan nanostructures

Chaudhary,

Banerjee,

Gaur

et al. 2024

IJAB

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Chitosan (CS), as a biopolymer, has unrivalled chemical and mechanical modification capabilities to develop novel characteristics, functions, and applications, particularly in the manufacture of cuttingedge membrane adsorbents. Membrane adsorbents utilizing carbon starch (CS) have emerged as a viable and efficient engineering instrument for eliminating diverse pollutants from aquatic settings, including heavy metals and dyes. To date, much study has been directed towards improving the adsorptive characteristics, permeability, physicochemical stability, and sustainability of CS-based membranes through the use of various types of nanoparticles (NPs). Additionally, nanoparticles (NPs) can be applied to personalise the appearance and performance of nano-structured and nano-fibrous membranes made from chitosan (CS). This chapter focuses on the utilisation of various types of nanoparticles in CS-based membrane adsorbents, comprising four major groups of metal-based, noncarbon mineral, carbonic (carbon-based), and Metal Organic Frameworks (MOFs). The review and discussion have been broadened to cover manufacturing methods and the effects of adding nanoparticles (NPs) on the chemistry, morphology, adsorption kinetics, and removal effectiveness of membranes made of chitosan (CS). This review might help researchers choose appropriate NP modifiers and preparation procedures for synthesising Nano composite CS membrane adsorbents for varied applications. Advances in chitosan modification, primarily with nanomaterials such as multiwalled carbon nanotubes and nanoparticles (TiO2, Ag, S, and ZnO), and their application for environmental remediation.

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“…Yue et al (2013) synthesized ZnO NPs using the sol–gel technique with zinc 2-ethylhexanoate as precursor salt and Propan-2-ol as a solvent [ 148 ]. In addition, Taghavi Fardood et al (2019) fabricated ZnO nanoparticles using zinc acetate and aluminium nitrate as precursors by a sol-gel method [ 154 ]. The aluminium nitrate was dissolved in zinc acetate drop wise, followed by centrifugation, drying, and calcination at 200 ℃, yielding zinc oxide nanoparticles as shown in Figure 7 .…”

Section: Progress On the Synthesis Of Chitosan Functionalized With Na...mentioning

confidence: 99%

Chitosan-Based Polymer Nanocomposites for Environmental Remediation of Mercury Pollution

et al. 2023

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Mercury is a well-known heavy metal pollutant of global importance, typically found in effluents (lakes, oceans, and sewage) and released into the atmosphere. It is highly toxic to humans, animals and plants. Therefore, the current challenge is to develop efficient materials and techniques that can be used to remediate mercury pollution in water and the atmosphere, even in low concentrations. The paper aims to review the chitosan-based polymer nanocomposite materials that have been used for the environmental remediation of mercury pollution since they possess multifunctional properties, beneficial for the adsorption of various kinds of pollutants from wastewater and the atmosphere. In addition, these chitosan-based polymer nanocomposites are made of non-toxic materials that are environmentally friendly, highly porous, biocompatible, biodegradable, and recyclable; they have a high number of surface active sites, are earth-abundant, have minimal surface defects, and are metal-free. Advances in the modification of the chitosan, mainly with nanomaterials such as multi-walled carbon nanotube and nanoparticles (Ag, TiO2, S, and ZnO), and its use for mercury uptake by batch adsorption and passive sampler methods are discussed.

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Green Synthesis of ZnO Nanoparticles via Sol-gel Method and Investigation of Its Application in Solvent-free Synthesis of 12-Aryl-tetrahydrobenzo[α]xanthene-11-one Derivatives Under Microwave Irradiation

Cited by 24 publications

References 23 publications

Green synthesis of copper nanoparticles using leaf extract of Ageratum houstonianum Mill. and study of their photocatalytic and antibacterial activities

Green synthesis of copper nanoparticles using leaf extract of Ageratum houstonianum Mill. and study of their photocatalytic and antibacterial activities

Environmental implications of Chitosan nanostructures

Chitosan-Based Polymer Nanocomposites for Environmental Remediation of Mercury Pollution

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