Castor leaf mediated synthesis of iron nanoparticles for evaluating catalytic effects in transesterification of castor oil

Rengasamy, Mookan; Anbalagan, Krishnasamy; Pugalenthi, Velan

doi:10.1039/c5ra15186d

Cited by 29 publications

(13 citation statements)

References 35 publications

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“…The peaks appeared in range 1215-1366 cm −1 were assigned to the bending vibration of the hydroxyl group, being associated with Sb and Fe [47]. The peak that appeared at~739 cm −1 was subjected to the bending of the Fe-O bond whereas, interestingly, no peak at~549 cm −1 was observed, which means no stretching of the Fe-O bond occurred in all samples [48]. After reacting with different antimony solutions, a new peak at approximately~490 cm −1 was observed in all samples, which was near to thẽ 488 cm −1 peak and, hence, assigned to the Sb(V)-O stretching vibration [28].…”

Section: Fourier Transform Infrared (Ft-ir) Spectra Analysismentioning

confidence: 89%

Removal of Sb(III) and Sb(V) by Ferric Chloride Coagulation: Implications of Fe Solubility

Inam

Khan

Park

et al. 2018

Water

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Coagulation and precipitation appear to be the most efficient and economical methods for the removal of antimony from aqueous solution. In this study, antimony removal from synthetic water and Fe solubility with ferric chloride (FC) coagulation has been investigated. The effects of pH, FC dosage, initial antimony loading and mixed Sb(III), Sb(V) proportions on Fe solubility and antimony removal were studied. The results showed that the Sb(III) removal efficiency increased with the increase of solution pH particularly due to an increase in Fe precipitation. The Sb(V) removal was influenced by the solution pH due to a change in Fe solubility. However, the Fe solubility was only impaired by the Sb(III) species at optimum pH 7. The removal efficiencies of both Sb species were enhanced with an increase in FC dose. The quantitative analysis of the isotherm study revealed the strong adsorption potential of Sb(III) on Fe precipitates as compared to Sb(V). Furthermore, the removal behavior of antimony was inhibited in mixed proportion with high Sb(V) fraction. In conclusion, this study contributes to better understanding the fate of Sb species, their mobilities, and comparative removal behavior, with implications for Fe solubility using ferric chloride in different aqueous environments.

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Section: Fourier Transform Infrared (Ft-ir) Spectra Analysismentioning

confidence: 89%

Removal of Sb(III) and Sb(V) by Ferric Chloride Coagulation: Implications of Fe Solubility

Inam

Khan

Park

et al. 2018

Water

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“…AgNPs can be regarded as “by-product” of the resistance mechanism of microorganisms against free Ag + . Plant mediated synthesis can reduce Ag + to Ag 0 using functional groups such as O-H and =C-H in organic components and their derivatives contained in the extract of plant parts 107 . Commonly used plant parts include bark, peel, callus, leaves, flower, fruit, stem, seed, and rhizome.…”

Section: Synthesis Of Agnpsmentioning

confidence: 99%

Silver nanoparticles: Synthesis, medical applications and biosafety

et al. 2020

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Silver nanoparticles (AgNPs) have been one of the most attractive nanomaterials in biomedicine due to their unique physicochemical properties. In this paper, we review the state-of-the-art advances of AgNPs in the synthesis methods, medical applications and biosafety of AgNPs. The synthesis methods of AgNPs include physical, chemical and biological routes. AgNPs are mainly used for antimicrobial and anticancer therapy, and also applied in the promotion of wound repair and bone healing, or as the vaccine adjuvant, anti-diabetic agent and biosensors. This review also summarizes the biological action mechanisms of AgNPs, which mainly involve the release of silver ions (Ag + ), generation of reactive oxygen species (ROS), destruction of membrane structure. Despite these therapeutic benefits, their biological safety problems such as potential toxicity on cells, tissue, and organs should be paid enough attention. Besides, we briefly introduce a new type of Ag particles smaller than AgNPs, silver Ångstrom (Å, 1 Å = 0.1 nm) particles (AgÅPs), which exhibit better biological activity and lower toxicity compared with AgNPs. Finally, we conclude the current challenges and point out the future development direction of AgNPs.

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“…The observed bands at 1470.08, 1457.62, 1463.84, and 1470.05 cm 21 attributed to methyl group. The observed bands at 1743.26, 1743.76, 1748.79, and 1743.76 cm 21 for ester group reveals the formation of biodiesel [43][44][45]. The presence of two groups namely methyl (CH 3 ) and ester (CAO ester) in samples indicate that the transesterification of waste cooking oil occurred due to the addition of methanol and catalyst [46].…”

Section: Ftir Analysismentioning

confidence: 99%

Ultrasonication‐assisted transesterification for biodiesel production by using heterogeneous ZnO nanocatalyst

Varghese

Henry

Irudayaraj

2017

Env Prog and Sustain Energy

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Biodiesel is considered as an alternative fuel which can replace the traditional fuels easily with its less hazardous effects and economical pricing. This study compares an ultrasonic‐assisted catalytic transesterification using ZnO nanocatalyst for waste cooking oil (WCO) with the conventional stirring method. The structural and morphological characterizations of prepared catalysts were done by XRD and FESEM with EDX methods. The effect of reaction parameters such as oil to methanol ratio, catalyst amount and reaction time was investigated to optimize the transesterification conditions. GC/MS and FTIR analysis have been carried out to identify and confirm the presence of fatty acid methyl esters (FAME) under optimum conditions. The FAME conversion yield up to 96% under ultrasonication method was calculated. Two important fuel properties like density and viscosity were analyzed and compared with the standard biodiesel. These studies provided the clear evidence that WCO can be employed as a substantial source of biodiesel as fuel in diesel engines. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1176–1182, 2018

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Castor leaf mediated synthesis of iron nanoparticles for evaluating catalytic effects in transesterification of castor oil

Abstract: A castor (Ricinus communis) leaf extract mediated process was developed for the synthesis of iron nanoparticles. The phytosynthesized iron nanoparticles were used as a catalyst for castor biodiesel production.

Cited by 29 publications

References 35 publications

Removal of Sb(III) and Sb(V) by Ferric Chloride Coagulation: Implications of Fe Solubility

Removal of Sb(III) and Sb(V) by Ferric Chloride Coagulation: Implications of Fe Solubility

Silver nanoparticles: Synthesis, medical applications and biosafety

Ultrasonication‐assisted transesterification for biodiesel production by using heterogeneous ZnO nanocatalyst

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