Synthesis of water soluble glycine capped silver nanoparticles and their surface selective interaction

Agasti, Nityananda; Singh, Vandita; Kaushik, N. K.

doi:10.1016/j.materresbull.2014.12.030

Cited by 23 publications

(12 citation statements)

References 24 publications

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“…Synthesis of bi- and trimetallic nanoparticles (NPs) has been of great interest in the applications of electrocatalysis due to their physical and chemical properties that can be better tuned for optimizing catalytic performance. − Moreover, combining cheap non-noble metals with expensive noble metals, such as Pt and Pd that are still the prevailing working elements of catalysis, can have the advantage of lowering the overall cost of catalysts and maintain strong catalytic activity. ,,− It is also important to synthesize smaller Pt-containing nanoparticles as this increases the surface area by mass for which reactions can occur. This helps utilize more Pt atoms on the surface of the NP vs in the bulk center where those Pt atoms are inaccessible to participate in catalytic reactions. − With this, controlling growth, structure, size, and composition of bi- or trimetallic NPs is of broad interest to the community as achieving synthesis of homogeneous multielement NPs with these controls is still a challenging task. − We report a novel yet simple surfactant-free one-pot synthesis of 2–5 nm homogeneous trimetallic PtNiCu NPs that uses environmentally friendly amino acid glycine as an effective size control agent. The latter adds a new synthetic functionality to glycine that has been used for shape and composition control of NPs in aqueous environments. ,,− Our synthesized PtNiCu NPs are not only among the smallest trimetallic NPs ever synthesized to date but also among the most active electrocatalysts for ethanol electro-oxidation reaction (EOR) in alkaline electrolyte. − …”

Section: Introductionmentioning

confidence: 99%

“…This helps utilize more Pt atoms on the surface of the NP vs in the bulk center where those Pt atoms are inaccessible to participate in catalytic reactions. − With this, controlling growth, structure, size, and composition of bi- or trimetallic NPs is of broad interest to the community as achieving synthesis of homogeneous multielement NPs with these controls is still a challenging task. − We report a novel yet simple surfactant-free one-pot synthesis of 2–5 nm homogeneous trimetallic PtNiCu NPs that uses environmentally friendly amino acid glycine as an effective size control agent. The latter adds a new synthetic functionality to glycine that has been used for shape and composition control of NPs in aqueous environments. ,,− Our synthesized PtNiCu NPs are not only among the smallest trimetallic NPs ever synthesized to date but also among the most active electrocatalysts for ethanol electro-oxidation reaction (EOR) in alkaline electrolyte. − …”

Section: Introductionmentioning

confidence: 99%

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Surfactant-Free One-Pot Synthesis of Homogeneous Trimetallic PtNiCu Nanoparticles with Size Control by Using Glycine

et al. 2020

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Homogeneous platinum alloy nanoparticles (NPs) are of great interest to the electrocatalytic community for potential use in various fuel cell electrodes. Increasing the surface area available per unit mass by decreasing the size of NPs while maintaining or improving activity is one of the key tasks of fuel cell catalysis. Achieving both in a synthesis of multielement NPs is still a challenging workup. In this investigation, we report the use of glycine as a size control agent to make ultrasmall homogeneous trimetallic PtNiCu NPs within 2–5 nm range. The mechanistic roles of dimethyl formamide (DMF), formaldehyde, water, and glycine are explored to understand the formation of these small NPs. Interestingly, it was observed that these PtNiCu NPs exhibited substantially enhanced mass activities toward the electro-oxidation of ethanol in comparison to commercial Pt black.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Surfactant-Free One-Pot Synthesis of Homogeneous Trimetallic PtNiCu Nanoparticles with Size Control by Using Glycine

et al. 2020

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“…S2 was prepared by mixing the Sylgard 184 oligomer with silver (Ag) nanopowder (transmission electron microscopy-TEM diameter ~100–150 nm, average hydrodynamic diameter ~230 nm, measured by dynamic light scattering-DLS) in 5% (wt/wt) and then adding curing agent and treated at 130 °C for 30 min. Silver nanoparticles were prepared using specific methods [ 33 ]. All samples were shaped so they could form test specimens of 10 mm diameter and 1mm thickness.…”

Section: Methodsmentioning

confidence: 99%

The Role of Biomaterials in Upper Digestive Tract Transoral Reconstruction

et al. 2021

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This study aims to establish whether the use of biomaterials, particularly polydimethylsiloxane (PDMS), for surgical reconstruction of the esophagus with templates, Montgomery salivary tube, after radical oncology surgery for malignant neoplasia is an optimal choice for patients’ safety and for optimal function preservation and organ rehabilitation. Structural analysis by Raman spectrometry and biomechanical properties with dynamic mechanical analysis are performed for fatigue strength and toughness, essential factors in durability of a prosthesis in the reconstruction practice of the esophagus. Nanocomposites with silicone elastomers and nanoparticles used in implantable devices and in reconstruction surgery present risks of infection and fatigue strength when required to perform a mechanical effort for long periods of time. This report takes into account the effect of silver (Ag) nanoparticles on the fatigue strength using polydimethylsiloxane (PDMS) matrix, representative for silicon elastomers used in implantable devices. PDMS with 5% (wt) Ag nanoparticles of 100–150 nm during mechanical fatigue testing at shear strength loses elasticity properties after 400 loading-unloading cycles and up to 15% shear strain. The fatigue strength, toughness, maximum shear strength, as well as clinical properties are key issues in designing Montgomery salivary tube and derivates with appropriate biomechanical behavior for each patient. Prosthesis design needs to indulge both clinical outcomes as well as design methods and research in the field of biomaterials.

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“…Synthesis of silver nanoparticles. 24 The glycine solutions of 50, 100, 150 and 200 millimolar concentration were prepared in triple distilled water. A 20 mL solution of each concentration was stirred in a conical flask.…”

Section: Methodsmentioning

confidence: 99%

Synthesis of Amino Acid Capped Silver Nanoparticles, Characterization, and Biological Application

Sharma¹

2020

Orient. J. Chem

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In the present work, chemical reduction method has been used to synthesize silver nanoparticles using glycine amino acid as a capping agent in different concentrations. The synthesis is optimized for the time by observing the reaction at 30, 60, 120, 180, 240, 300 and 360 minutes. The optimum time for this synthesis is 240 minuters. after this time there was no change in absorbance. Ultraviolet-visible spectroscopy and Dynamic light scattering (DLS) techniques are used to characterize these nanoparticles. The surface plasma resonance (SPR) peak in the range between 400-427 nm confirmed the synthesis of silver nanoparticles. These silver nanoparticles are 50-60 nm in diameter. The antibacterial activity of synthesized nanoparticles is evaluated against E. coli and S. aureus. Nanoparticles show a bactericidal effect on Gram +ve and Gram -ve bacteria. As the concentration of glycine increased, the diameter of the zone of inhibition against E. coli as well as S. aureus also increased.

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Synthesis of water soluble glycine capped silver nanoparticles and their surface selective interaction

Cited by 23 publications

References 24 publications

Surfactant-Free One-Pot Synthesis of Homogeneous Trimetallic PtNiCu Nanoparticles with Size Control by Using Glycine

Surfactant-Free One-Pot Synthesis of Homogeneous Trimetallic PtNiCu Nanoparticles with Size Control by Using Glycine

The Role of Biomaterials in Upper Digestive Tract Transoral Reconstruction

Synthesis of Amino Acid Capped Silver Nanoparticles, Characterization, and Biological Application

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