Synthesis and Characterization of Iron Oxide Nanoparticles for Phenyl Hydrazine Sensor Applications

Hwang, Sekyu; Umar, Ahmad; Dar, G. N.; Kim, S. H.; Badran, R. I.

doi:10.1166/sl.2014.3224

Cited by 176 publications

(86 citation statements)

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“…The iron-oxygen bond observed at 671 cm −1 , 621 cm −1 and 636 cm −1 (Fig. 6) [13,28,29,[45][46][47][48]. The FTIR bands for the synthesized iron nanoparticles matched well with those for their respective plant extracts, which demonstrate that the components present in the extracts capped the synthesized iron nanoparticles.…”

Section: Ftir Characterization Of Zvinmentioning

confidence: 57%

Catalytic degradation of methylene blue by iron nanoparticles synthesized using Galinsoga parviflora, Conyza bonariensis and Bidens pilosa leaf extracts

et al. 2019

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Green synthesized metallic nanoparticles are environmentally friendly, bio-compatible, and highly stable. The aim of this study was to synthesize iron nanoparticles (FeNPs) from FeCl 3 solution using aqueous leaf extracts of Galinsoga parviflora (Gp), Conyza bonariensis (Cb) and Bidens pilosa (Bp) and use them in degradation of methylene blue dye. The iron nanoparticles were characterized using UV-Vis spectrophotometer, FT-IR spectrophotometer, X-ray Fluorescence (EDXRF), X-ray diffractometer (XRD), and scanning electron microscope (SEM). Phytochemical screening for presence of secondary metabolites revealed presence of phenolics, phytosterols and flavonoids. The total phenolic and flavonoid content in Galinsoga parviflora, Conyza bonariensis and Bidens pilosa leaf extracts were 57.67 ± 1.27, 117.13 ± 0.03, 126.27 ± 0.013 mg Gallic Equivalent/g of Dry Weight (mg GAE/g DW) and 39.00 ± 0.56, 45.50 ± 0.59, 33.13 ± 0.81 mg Rutin Equivalent/g of Dry Weight (mg RE/g DW) respectively. The UV-Vis spectrum of FeCl 3 had a shoulder at 320 nm, which disappeared upon addition of G. parviflora, C. bonariensis and B. pilosa extracts confirming formation of iron nanoparticles. Evaluation of iron content of the synthesized nanoparticles revealed that the iron content in G. parviflora, C. bonariensis and B. pilosa extracts was 51, 47 and 44% respectively. XRD data revealed presence of a large amorphous coating that masked iron peaks, though 2 theta values observed have been reported to be of iron oxides. Methylene blue degradation studies revealed that CbNPs, BpNPs and GpNPs synthesized were good biocatalysts as they degraded the dye by 86, 84.3 and 92% respectively. Therefore, green synthesized iron nanoparticles is cost effective and environmentally safe in providing insight in the environmental removal of dyes.

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Section: Ftir Characterization Of Zvinmentioning

confidence: 57%

Catalytic degradation of methylene blue by iron nanoparticles synthesized using Galinsoga parviflora, Conyza bonariensis and Bidens pilosa leaf extracts

et al. 2019

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“…The absorption band near 622 cm −1 assigned to the vibration of the Fe–O bond in iron oxide [17]. In the FT-IR spectra of NPs and extract, the wide-range band observed at 3300-3400 cm −1 of O–H stretching vibration may results from the phenolic hydroxyl group present in polyphenolic compounds [18, 19]. The bands at 1550-1600 cm −1 , 1400 cm −1 and 1026.60 cm −1 are ascribed to the stretching vibration of C=O, bending vibration of C–H and stretching vibration of C–N bonds, respectively, confirming the presence of phenolic acids, terpenoids-phenols and aliphatic amines respectively [19].…”

Section: Resultsmentioning

confidence: 99%

A green approach for the synthesis of α-Fe2O3 nanoparticles from Gardenia resinifera plant and it's In vitro hyperthermia application

Karade

Parit

Dawkar

et al. 2019

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The Gardenia , traditional medicinal plant used from ancient time to increase appetite and other medicinal uses has been employed for the synthesis of superparamagnetic α-Fe 2 O 3 nanoparticles (NPs). The plant extracts unveiled its bifunctional nature through the reducing ferric ions by phenolic groups and capping nature through the –OH bonding over the NPs surface. The prepared NPs exhibits α-Fe 2 O 3 phase among iron oxides and spherical morphology with an average size around 5 nm. The magnetic measurements proved the superparamagnetic behavior of NPs with non-saturating M S value of 8.5 emu/g at room temperature (300 K). Further, the hyperthermia study reveals, the NPs achieved a temperature of 40 °C and 43 °C within 6 min and reaches up to 43 °C and 45 °C within 10 min only for 5 μg/mL and 10 μg/mL concentrations respectively. Based on the heating profile of NPs, the SAR values (167.7 Oe, 300 MHz) calculated and are found to be around 62.75 W/g and 24.38 W/g for 5 μg/mL and 10 μg/mL NPs concentrations respectively. Subsequently, these have been used for toxicity assays, which presented enhanced cytotoxic effects on human mesenchymal cells lines proving them as a potential candidate for the biomedical applications.

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“…With increase in relative humidity in the atmosphere, the relative percentage (intensity) of cadmium hydroxide and iron oxide formed on the wear track increases. The peak at 2,929 cm -1 corresponds to iron oxide [37,38]. The broad peak identified at 3,400 and 1,635 cm -1 , respectively, was due to ferrihydrite peak from the substrate steel [39].…”

Section: Average Friction and Spatial Friction At Rh0mentioning

confidence: 91%

Friction transitions and connections to third bodies for a Cd coating on steel substrate

et al. 2020

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Cd coating is used in aerospace industries from last five decades due to its sacrificial protection and lubrication properties. Although Cd coating is primarily used due to its sacrificial corrosion protection when applied on steel substrate, the added benefit of modifying the tribological behavior by acting as a lubricious layer gives it a leading-edge than other coatings. Often the measurement of friction coefficient (CoF) is reported as a value generated after full sliding cycle. This measurement of average CoF generally limits the study of local variation in CoF occurring within one sliding cycle, which can be significantly different with change in spatial position due to change in third body morphology. In this study, a linearly reciprocating sliding test is used to measure the CoF at a sampling rate of 800 Hz along the track length to generate triboscopic image with steel countersphere. The instantaneous CoF obtained with triboscopy is correlated with the wear track morphology using scanning electron microscope (SEM) and optical profilometer for variation in contact conditions. Tribological test performed in dry atmosphere shows an average CoF of 0.4 till the end of the test whereas with increase in relative humidity to 60%, the average CoF changes from 0.4 to 0.8 at the end of the test due to change in contact conditions. Soft Cd coating on low carbon steel substrate is used to study these variations in third body morphology.

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Synthesis and Characterization of Iron Oxide Nanoparticles for Phenyl Hydrazine Sensor Applications

Cited by 176 publications

References 0 publications

Catalytic degradation of methylene blue by iron nanoparticles synthesized using Galinsoga parviflora, Conyza bonariensis and Bidens pilosa leaf extracts

Catalytic degradation of methylene blue by iron nanoparticles synthesized using Galinsoga parviflora, Conyza bonariensis and Bidens pilosa leaf extracts

A green approach for the synthesis of α-Fe2O3 nanoparticles from Gardenia resinifera plant and it's In vitro hyperthermia application

Friction transitions and connections to third bodies for a Cd coating on steel substrate

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