Bioreduction of gold nanocolloids using Quercus infectoria (Oliv): UV-assisted cationic-anionic dye degradation

Thaninayagam, Ebenezer; Gopi, R.R.; Prabu, H. Joy; Arunviveke, A.; Johnson, I.; Anthuvan, Allen Joseph; Sundaram, S. John; Kaviyarasu, K.

doi:10.1007/s13399-023-03777-x

Cited by 7 publications

(2 citation statements)

References 66 publications

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“…Adding Co composites increases the bandgap, as indicated by the Tauc plot. The introduction of Co composites results in an increased concentration of charge carriers, leading to a higher bandgap [41–44]. The minimal energy required for an electron to move from the valence band (VB) to the conducting band (CB) in Co material contributes to the increase in bandgap when NiO nanoparticles are added.…”

Section: Resultsmentioning

confidence: 99%

Enhanced photocatalytic and electrochemical performance of hydrothermally prepared NiO‐doped Co nanocomposites

Venkatachalapathy,

Sambathkumar,

Rajasaravanan

et al. 2024

Luminescence

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In this study, we synthesize nanostructured nickel oxide (NiO) and doped cobalt (Co) by combining nickel(II) chloride hexahydrate (NiCl2.6H2O) and sodium hydroxide (NaOH) as initial substances. We analyzed the characteristics of the product nanostructures, including their structure, optical properties, and magnetic properties, using various techniques such as x‐ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet absorption spectroscopy (UV–Vis), Fourier transform infrared (FTIR) spectroscopy, and vibrating sample magnetometers (VSM). The NiO nanoparticles doped with Co showed photocatalytic activity in degrading methylene blue (MB) dye in aqueous solutions. We calculated the degradation efficiencies by analyzing the UV–Vis absorption spectra at the dye's absorption wavelength of 664 nm. It was observed that the NiO‐doped Co nanoparticles facilitated enhanced recombination and migration of active elements, which led to more effective degradation of organic dyes during photocatalysis. We also assessed the electrochemical properties of the materials using cyclic voltammetry (CV) and impedance spectroscopy in a 1 mol% NaOH solution. The NiO‐modified electrode exhibited poor voltammogram performance due to insufficient contact between nanoparticles and the electrolyte solution. In contrast, the uncapped NiO's oxidation and reduction cyclic voltammograms displayed redox peaks at 0.36 and 0.30 V, respectively.

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Section: Resultsmentioning

confidence: 99%

Enhanced photocatalytic and electrochemical performance of hydrothermally prepared NiO‐doped Co nanocomposites

Venkatachalapathy,

Sambathkumar,

Rajasaravanan

et al. 2024

Luminescence

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“…Presently, every nation strives to improve their economies by growing and diversifying their industrial sectors, particularly the chemical industries, which use various harmful chemicals in the manufacture of helpful aids while also being accountable for pollution. Large-scale usage of various dyes, including Crystal Violet, Methylene Blue, Alizarin, Naphthol Green, Red 2G, and Indanthrone Blue, is made in the dyeing, printing, textile, and paper industries (Thaninayagam et al, 2023). Frequently, unwanted dye solutions are just thrown directly, without any kind of pre-treatment into water bodies.…”

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confidence: 99%

A Review on Phyto-Mediated Gold Nanoparticles for Efficient Dye Degradation

Banerjee,

Saha,

paul

et al. 2023

SFS

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The production of metal nanoparticles using plant extracts is one of the simplest, most efficient, affordable, and environmentally friendly solutions to prevent the use of harmful chemicals. Of all the nanoparticles, Gold (Au) nanoparticles (NPs) have garnered the most interest due to their distinct catalytic properties for degradation of dyes. Concerns concerning the synthesis of these materials, such as the use of hazardous solvents and precursor chemicals, microbial contamination, and the formation of undesirable byproducts, led to the development of the alternative method known as "green synthesis." As a result, several rapid and environmentally friendly ways to make Au NPs utilising aqueous extracts of various plant components, including bark, roots, leaves, and so on, have been described recently. Here, we review recent developments in the ecologically friendly production of Au NPs, their use as antifungal agents, and their mechanism of action. This paper sheds light on the ecologically friendly production of Au NPs, their use in dye removal with their mechanism of action, and their potential in the future.

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Green synthesis of laterite iron-based nanocatalysts using Psidium guajava and Macaranga peltata plant extract for its catalytic application in Fenton’s oxidation of triclosan

Rashmishree

Bhaskar

Hari

et al. 2023

Clean Techn Environ Policy

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Bioreduction of gold nanocolloids using Quercus infectoria (Oliv): UV-assisted cationic-anionic dye degradation

Cited by 7 publications

References 66 publications

Enhanced photocatalytic and electrochemical performance of hydrothermally prepared NiO‐doped Co nanocomposites

Enhanced photocatalytic and electrochemical performance of hydrothermally prepared NiO‐doped Co nanocomposites

A Review on Phyto-Mediated Gold Nanoparticles for Efficient Dye Degradation

Green synthesis of laterite iron-based nanocatalysts using Psidium guajava and Macaranga peltata plant extract for its catalytic application in Fenton’s oxidation of triclosan

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