Colloids based on gold nanoparticles dispersed in castor oil: Synthesis parameters and the effect of the free fatty acid content

Morais, Sara Figueirêdo de Alcântara; Silva, Monique G. A. da; Meneghetti, Simoni Margareti Plentz; Meneghetti, Mário R.

doi:10.1016/j.crci.2014.07.008

Cited by 8 publications

(2 citation statements)

References 60 publications

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“…These features would make castor oil derivatives eligible for nanoparticle synthesis, provided that the 18-carbon fatty acid is capable of preventing aggregation and excessive nanoparticle growth. So far, studies have employed castor oil or ricinoleic acid as dispersive media for stabilization of a variety of nanostructures that include gold nanoparticles produced by sputtering [26] and wet chemistry process [27], quantum dots fabricated through thermolysis [28], and silver and gold nanoparticles in paints [29], as well as silver nanoparticles synthesized via ablation of metallic silver [30]. A question that remains open is whether ricinoleic acid/ricinoleate could function concomitantly as reducing and capping agents in appropriate experimental conditions.…”

Section: Introductionmentioning

confidence: 99%

Dual Role of a Ricinoleic Acid Derivative in the Aqueous Synthesis of Silver Nanoparticles

Costa

Neto

Silva

et al. 2017

Journal of Nanomaterials

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We show that sodium 9,10-epoxy-12-hydroxytetradecanoate (SEAR), an epoxidized derivative of ricinoleic acid, simultaneously functioned as reducing and stabilizing agents in the synthesis of silver nanoparticles in alkaline aqueous medium. The advantage of using SEAR is its biodegradability and nontoxicity, which are important characteristics for mitigation of environmental impact upon discharge of nanoparticles into terrestrial and aquatic ecosystems. The SEAR concentration was found to impact considerably the size distribution of silver nanoparticles (AgNPs). A concentration below the SEAR critical micelle concentration (CMC) generated 23 nm sized AgNPs with 10 nm standard deviation, while 50 nm sized AgNPs ( = 21 nm) were obtained at a concentration above the SEAR CMC. FTIR analysis revealed that the carboxylate that constitutes the SEAR hydrophilic head binds directly to the AgNPs surface promoting stabilization in solution. Finally, AgNPs turned into Ag 2 S upon contact with wastewater samples from Wastewater Treatment Plant at Federal University of Rio Grande do Norte (UFRN), Brazil, which is an interesting result, since Ag 2 S is more environmentally friendly than pure AgNPs.

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Section: Introductionmentioning

confidence: 99%

Dual Role of a Ricinoleic Acid Derivative in the Aqueous Synthesis of Silver Nanoparticles

Costa

Neto

Silva

et al. 2017

Journal of Nanomaterials

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“…These features made castor oil derivatives eligible for nanoparticle synthesis, provided that the 18-carbon fatty acid is capable of preventing aggregation and excessive nanoparticle growth. So far, studies have employed castor oil or ricinoleic acid as dispersive media for stabilization of a variety of nanostructures that Castor bean as nutrient source include gold nanoparticles produced by sputtering (Wender et al, 2010) and wet chemistry process (Morais et al, 2015), quantum dots fabricated through thermolysis (Shombe et al, 2016), and silver and gold nanoparticles in paints (Kumar et al, 2008) as well as silver nanoparticles synthesized via ablation of metallic silver (Zamiri et al, 2011).…”

Section: Ricinmentioning

confidence: 99%

Castor bean cake: A paradox of toxicity and nutrient source in farm animals and aquaculture

Mondal¹,

Bera²,

Das³

2019

ijah

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Castor bean (Ricinus communis L.) though indigenous to Africa, has become endemic to many Asian, African, European and American countries. Castor is an industrial oilseed crop, wide spread in the tropical region as a spontaneous plant and widely being cultivated in India, China and Brazil. The main advantage of castor is its tolerance to drought stress and adaptation to variable agro-climatic conditions. The castor bean contains 40% oil, 1-5% ricin and 0.3-0.8% ricinin and nutritionally rich as it contains 4.3% nitrogen (N 2 ), 1.8% phosphorus (P 2 O 5 ) and 1.3% potassium (K 2 O). However, the great paradox of castor poisoning haunts globally before commercial application of such nutrient rich natural product in animal husbandry sector including aquaculture. The present paper reviewed the prospects of castor bean as nutrient source in animal husbandry considering its poisonous effects and processing mechanisms.

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Vegetable oils in nanoparticles synthesis

Paudel,

Panta,

Adhikari

2024

Vegetable Oil-Based Polymers and Their Surface Applications

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Colloids based on gold nanoparticles dispersed in castor oil: Synthesis parameters and the effect of the free fatty acid content

Cited by 8 publications

References 60 publications

Dual Role of a Ricinoleic Acid Derivative in the Aqueous Synthesis of Silver Nanoparticles

Dual Role of a Ricinoleic Acid Derivative in the Aqueous Synthesis of Silver Nanoparticles

Castor bean cake: A paradox of toxicity and nutrient source in farm animals and aquaculture

Vegetable oils in nanoparticles synthesis

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