Preparation and Characterization of Silver Oxide Nanoparticles (AgNPs) and Evaluation the Ratios of Oxides

Abdulrazzak, Firas H.; Abbas, Ahmed M.; Mohammed, Mostefe Khalid; Radhi, Israa M.; Abdullatif, Ahmed E.; Yaseen, Hamsa M.; Yas, Duah Ayad; Alkaim, Ayad F.

doi:10.36478/jeasci.2019.9177.9184

Cited by 5 publications

(2 citation statements)

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“…The refractive index of oils varies according to molecular weight, chain length of fatty acids, degree of unsaturation, and degree of conjugation (Andhale et al, 2017). However, obtained values of refractive index are within the standard limits (1.40–1.47) as recommended for edible oils by Abdulkadir et al (2010).…”

Section: Resultssupporting

confidence: 73%

Impact of various extraction methods on fatty acid profile, physicochemical properties, and nutritional quality index of Pangus fish oil

Rahman

Hashem

Akther

et al. 2023

Food Science & Nutrition

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Marine fish are high in essential omega‐3 fatty acids, which are important for human health. This study evaluated the effects of four extraction methods (soxhlet extraction, SE; wet rendering, WR; acid silage, AS; microwave‐assisted extraction, MAE) on the oil yield, physicochemical properties, fatty acid profile, and nutritional quality index (NQI) of pangus fish oil. The oil yield ranged from 13.50% to 21.80%, with MAE having the highest yield. Furthermore, MAE oil has the lowest free fatty acid (0.70%), peroxides (2.08 Meq/kg), and saponification (287.27 mg/g KOH) value. There were no significant differences (p > .05) in the refractive index and melting point of oils among extraction techniques. A total of 25 fatty acids were identified. However, the maximum PUFA, MUFA, and SFA recovery was observed in the SE (19.15 mg/100 g), MAE (7.99 mg/100 g), and AS (17.33 mg/100 g), respectively. In terms of NQI, SE had higher PUFA/SFA, HH, and LA/ALA ratios, while AS had higher EPA + DHA, n‐3/n‐6, AI, TI, and FLQ indices. Furthermore, the MAE approach yielded better ratios of n‐3/n‐6 and HPI index, whereas the WR method yielded a higher AI index. Therefore, MAE would be the most efficient method for extracting pangus fish oil by considering both technical feasibility and quality indices including extraction yield, best physical properties, oxidative stability, and fatty acid contents.

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Section: Resultssupporting

confidence: 73%

Impact of various extraction methods on fatty acid profile, physicochemical properties, and nutritional quality index of Pangus fish oil

Rahman

Hashem

Akther

et al. 2023

Food Science & Nutrition

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“…The average crystallite size was calculated and found to be 35.1 nm for a pure silver oxide nanoparticle and 21.2 nm for the samples prepared with flower extract. The embodiment of flower extract relentlessly influences the structural parameters (Table 1) owing to the confiscation of some peaks, and creation of new peaks with dual phase and dual crystal structure format [26].…”

Section: Structural Propertiesmentioning

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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Nitrate Reduction Catalyzed by Bimetallic Silver‐Copper Macroporous Foams

Sun,

Zhou,

Loyaux‐Lawniczak

et al. 2024

ChemCatChem

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IIn this work we describe the use of bimetallic silver‐copper macroporous foams for electrochemical nitrate reduction in acidic conditions (pH 2, 0.1 M NaClO4). By carefully selecting the composition of the electrodeposition bath, we have successfully prepared foams with atomic percentage varying from Ag dominant to Cu dominant. Also, we have succeeded to obtain morphologies that vary between the one specific to pure Ag foam to the one specific to pure Cu foam. We have shown that these foams contain a pure silver phase and also a silver‐copper alloy. The electrochemical active surface area of the foams depends both on the morphology as well as on the atomic composition. These materials were used for the first time as catalysts for nitrate electrochemical reaction (NO3RR). Both liquid and gaseous products were quantified with several analytical techniques. It was shown that bimetallic foams present superior faradaic efficiency (FE) towards liquid products in comparisons with pure silver and copper foams, suggesting a synergetic contribution from both metals. The Ag94Cu6 (AgCu10) foam shows a FE as high as 92% towards liquid products and the lowest FE (3%) towards the undesired product, nitrous acid. Also, this material shows a better stability than pure copper materials.

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Preparation and Characterization of Silver Oxide Nanoparticles (AgNPs) and Evaluation the Ratios of Oxides

Cited by 5 publications

References 0 publications

Impact of various extraction methods on fatty acid profile, physicochemical properties, and nutritional quality index of Pangus fish oil

Impact of various extraction methods on fatty acid profile, physicochemical properties, and nutritional quality index of Pangus fish oil

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

Nitrate Reduction Catalyzed by Bimetallic Silver‐Copper Macroporous Foams

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