Green synthesis of magnetic nanoparticles using leaf extracts of Aloe vera and Kalanchoe daigremontiana to remove divalent mercury from natural waters

Morales, Gladis; Campillo, G.; Vélez, Ederley; Osorio, J.; Urquijo, J. P.; Velasquez, Alvaro

doi:10.1088/1742-6596/1247/1/012021

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…Aloe barbadensis, water rich plant containing polysaccharides and saponins, used in the present study probably helped to wet grind the particles smoothly, bind them easily during pellet formation, desiccate in a short duration and leave behind negligible inorganic residue after incineration. It possibly also acts as a natural surfactant, stabilising agent [20] , solvent, bio-template for nanometal oxide synthesis and preventer of particle agglomeration; thus, highlighting the importance of green biosynthesis against harmful chemicals as precipitating and reducing agents [21] .…”

Section: Sesame Oil (N=8)mentioning

confidence: 99%

Pharmaceutical Standardization of Traditionally Prepared Lauha Bhasma Incinerated Iron, Characterised as Alpha Haematite

Chavan,

Bhuvad,

Walunj

et al. 2024

IJPS

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Standardization of Incinerated Iron (Lauha Bhasma) as Alpha HaematiteLauha Bhasma being incinerated metals, minerals and animal products attributed with specific therapeutic value needs standardization. Present study validates the pharmaceutical process of Lauha Bhasma/incinerated iron and characterizes it using traditional as well as modern techniques. Lauha Bhasma was prepared by traditional method. Pure iron turnings were sequentially quenched, 7 times each, into liquid media (1:4 w/v, for each) viz., sesame oil, cow's butter milk, cow's urine, sour gruel, Dolichus biflorus seed decoction and decoction of equally mixed pericarp of three myrobalans (Triphala). It was further mixed with sulphur, triturated with Aloe barbadensis leaf pulp and incinerated at 650°-850°, till the achievement of desired characters. The obtained reddish-violet powder contained 60 %-65 % of iron while characterized as crystalline ferric oxide, alpha haematite, on X-ray diffraction simulation. Vibrating sample magnetometer revealed hysteresis with less magnetisation saturation but high coercivity. Thermo-gravimetric analysis showed loss of ~3.5 % w/w between 300°-900°. Both, scanning and transmission electron microscopy visualised variably sized agglomerates of spherical to irregularly shaped particles with smooth edges. Dynamic light scattering analysis illustrated distribution of agglomerates as <250 nm (10 %), <515 nm (50 %) and <1050 nm (90 %) while negative zeta potential upto 14 mV. Elemental assay depicted heavy metals within permissible range and presence of trace elements up-to 2.75 %. Such Lauha Bhasma, characterized as alpha haematite, is traditionally prescribed in blood, liver, intestine and eye disorders. This study will help to explore this micro-nanomedicine as a therapeutic agent using in vitro and in vivo mechanistic studies.

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Section: Sesame Oil (N=8)mentioning

confidence: 99%

Pharmaceutical Standardization of Traditionally Prepared Lauha Bhasma Incinerated Iron, Characterised as Alpha Haematite

Chavan,

Bhuvad,

Walunj

et al. 2024

IJPS

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“…To synthesize bioderived magnetic iron oxide nanoparticles, we have followed a previously used method of G. Morales et al (2019) 9 by adopting a few changes like plant extract and a few more parameters. Initially, prepared fresh leaf extract (10 ml) was added to 1M FeSO 4 •7H 2 O (10 ml) in a 1:1 ratio, and it was observed that the mixture turned light green and precipitated quickly.…”

Section: Synthesis Of Bioderived Magnetic Iron Oxide Nanoparticlesmentioning

confidence: 99%

Bioderived Magnetic Iron Oxide Nanoparticles from Leaf Extract of Argyreia Nervosa for Electrochemical Biosensing of Pesticide

Singh¹,

Singh²,

Singh³

et al. 2022

ECS Trans.

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In this work, we have utilized leaves extract of Argyreia Nervosa (AN) to synthesize magnetic iron oxide nanoparticles by using the mixed precursor salt (ferric chloride and ferrous sulphate). After nanoparticles synthesis, it was initially characterized using Fourier Transform Infrared spectroscopy (FT-IR), UV–visible spectrophotometry (UV-Visible), Transmission Electron Microscope (TEM), and Scanning Electron Microscope (SEM). Further, characterization in this work is needed, namely AFM, XRD, and electrochemical studies (Differential Pulse Voltammetry (DPV) and Cyclic Voltammetry (CV)). The desired work is novel for synthesizing magnetic iron nanoparticles and their utilization for fabricating electrochemical biosensor devices for pesticide detection. Hence, in this study, we have focused on synthesizing magnetic iron oxide nanoparticles via the biogenic route of synthesis for fabricating an enzyme-biosensor for the determination of pesticides, which will open a new avenue for developing nanobiosensing devices through a greener and sustainable approach that is green/bioinspired/bioderived synthesis of nanomaterials that utilizes phytochemicals.

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Phytogenic nanoparticles: synthesis, characterization, and their roles in physiology and biochemistry of plants

Shiraz,

Imtiaz,

Azam

et al. 2023

Biometals

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Green synthesis of magnetic nanoparticles using leaf extracts of Aloe vera and Kalanchoe daigremontiana to remove divalent mercury from natural waters

Cited by 5 publications

References 15 publications

Pharmaceutical Standardization of Traditionally Prepared Lauha Bhasma Incinerated Iron, Characterised as Alpha Haematite

Pharmaceutical Standardization of Traditionally Prepared Lauha Bhasma Incinerated Iron, Characterised as Alpha Haematite

Bioderived Magnetic Iron Oxide Nanoparticles from Leaf Extract of Argyreia Nervosa for Electrochemical Biosensing of Pesticide

Phytogenic nanoparticles: synthesis, characterization, and their roles in physiology and biochemistry of plants

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