Formation and characterization of surfactant stabilized silver nanoparticles: A kinetic study

AL-Thabaiti, Shaeel Ahmed; Al-Nowaiser, F.M.; Obaid, A.Y.; Al-Youbi, A.O.; Khan, Zaheer

doi:10.1016/j.colsurfb.2008.08.022

Cited by 117 publications

(49 citation statements)

References 48 publications

(58 reference statements)

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“…It has been established that the presence of a capping agent, which hinders the unlimited growth of nanoparticles, is essential for the synthesis of perfectly transparent sols of these metal nanoparticles. [53][54][55][56] In the present study, the Hibiscus sabdariffa extract acted as a reducing agent as well as a capping agent. Thus, we may state condently that the presence of a stabilizer is not mandatory for the synthesis of Fe nanoparticles using a green chemical reduction method.…”

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Biofabrication of Fe nanoparticles in aqueous extract of Hibiscus sabdariffa with enhanced photocatalytic activities

et al. 2017

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Hibiscus sabdariffa is a strongly basic dye with a large number of medicinal applications and is used for various diagnostic purposes. The biofabrication of Fe nanoparticles using Hibiscus sabdariffa (Roselle) flower extract is an eco-friendly and cost-effective protocol reported for the first time in the present investigation. The natural plant extract acts as a non-toxic, biodegradable and economical reducing agent in the biosynthesis of the Fe nanoparticles. Different well-known complementary characterization techniques such as UV-vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), X-ray diffraction (XRD), dynamic light scattering (DLS) and thermogravimetric analysis-differential scanning calorimetry (TGA-DSC) were used to investigate the morphological, structural and optical properties of the as-synthesised Fe nanoparticles. The resulting nanoparticles were then utilized as a photocatalyst for the degradation of the toxic organic dye Congo red (CR). UV-visible spectroscopy was used to determine the photocatalytic performance of the Fe nanoparticles under UV irradiation. The results of the photocatalytic degradation of Congo red in aqueous solution under UV light showed a higher photocatalytic activity. A reasonable mechanism was proposed for the enhanced photocatalytic activity of the Fe nanoparticles.

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Biofabrication of Fe nanoparticles in aqueous extract of Hibiscus sabdariffa with enhanced photocatalytic activities

et al. 2017

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“…Upon the production of Ag NPs, the utilization of a stabilizer is essential to enhance the stability of the formed Ag NPs. Various stabilizers have been proposed, including chemical surfactants (AL-Thabaiti et al 2008;Abd-Elaal et al 2015), polyvinylpyrrolidone (PVP) (Wang et al 2014;Kyrychenko et al 2015), and organic polymers (Suber et al 2005). However, most of these conventional agents exhibit difficulty in separating particles from stabilizers.…”

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confidence: 99%

Green Synthesis and Stability Evaluation of Ag Nanoparticles Using Bamboo Hemicellulose

et al. 2015

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The unique physico-chemical properties of silver nanoparticles (Ag NPs) have opened up the opportunity for their use in many promising physicochemical and biomedical applications. In this study, an economically feasible approach to green synthesis of silver nanoparticles (Ag NPs) is described using hemicellulose from bamboo. Simultaneously, glucose was used as the reducing agent, and distilled water was used as the reaction medium. UV-vis spectroscopy and transmission electron microscopy were used to investigate the surface plasmon behavior, morphology, and particle size of the Ag NPs. Hemicellulose alone could not reduce Ag + to Ag 0 . The formation rate of the nanoparticles was accelerated when high amounts of glucose were added. Small particle sizes were obtained when high concentrations of hemicellulose were used. The stability of the Ag NPs synthesized using different concentrations of hemicellulose from 0.5 mg/mL to 8.0 mg/mL was also evaluated. Higher initial hemicellulose concentrations produced more stable Ag NPs. The average particle sizes of the NPs after storing for 160 days at 4 °C were still smaller than 10 nm when the initial hemicellulose concentrations were 6.0 and 8.0 mg/mL.

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“…The apparent first-order rate constants (k obs , s −1 ) were calculated from the slopes of the plots of ln a/(1 − a) versus time with a fixed-time method [18]. Other experimental procedure details are described elsewhere [19,20].…”

Section: Kinetic Proceduresmentioning

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A kinetic study of silver nanoparticles formation from paracetamol and silver(I) in aqueous and micellar media

Ahmad¹,

Malik²,

Al-Nowaiser³

et al. 2010

Colloids and Surfaces B: Biointerfaces

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Formation and characterization of surfactant stabilized silver nanoparticles: A kinetic study

Cited by 117 publications

References 48 publications

Biofabrication of Fe nanoparticles in aqueous extract of Hibiscus sabdariffa with enhanced photocatalytic activities

Biofabrication of Fe nanoparticles in aqueous extract of Hibiscus sabdariffa with enhanced photocatalytic activities

Green Synthesis and Stability Evaluation of Ag Nanoparticles Using Bamboo Hemicellulose

A kinetic study of silver nanoparticles formation from paracetamol and silver(I) in aqueous and micellar media

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