Strategic green synthesis and characterization of Au/Pt/Ag trimetallic nanocomposites

Karthikeyan, B.; Loganathan, B.

doi:10.1016/j.matlet.2012.06.070

Cited by 37 publications

(27 citation statements)

References 15 publications

(15 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4,13,14 Aiming at cost effectiveness and process simplicity, significant attempts on the biosynthesis of bimetallic NPs were already reported on Au containing Ag− Au NPs using various plant bioresources. 15,16 While considering the trimetallic NPs, Au−Pt−Ag 17 and Au−Pd−Pt 9,18 were synthesized by microwave mediated method (the only reported greener approach). To the best of our knowledge, there is only one study reported for the synthesis of trimetallic NPs by plant resources which is an in vivo approach.…”

Section: Introductionmentioning

confidence: 99%

Mixed Phytochemicals Mediated Synthesis of Multifunctional Ag–Au–Pd Nanoparticles for Glucose Oxidation and Antimicrobial Applications

Rao

Paria

2015

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The growing awareness toward the environment is increasing commercial demand for nanoparticles by green route syntheses. In this study, alloy-like Ag-Au-Pd trimetallic nanoparticles have been prepared by two plants extracts Aegle marmelos leaf (LE) and Syzygium aromaticum bud extracts (CE). Compositionally different Ag-Au-Pd nanoparticles with an atomic ratio of 5.26:2.16:1.0 (by LE) and 11.36:13.14:1.0 (by LE + CE) of Ag:Au:Pd were easily synthesized within 10 min at ambient conditions by changing the composition of phytochemicals. The average diameters of the nanoparticles by LE and LE + CE are ∼8 and ∼11 nm. The catalytic activity of the trimetallic nanoparticles was studied, and they were found to be efficient catalysts for the glucose oxidation process. The prepared nanoparticles also exhibited efficient antibacterial activity against a model Gram-negative bacteria Escherichia coli. The catalytic and antimicrobial properties of these readymade trimetallic nanoparticles have high possibility to be utilized in diverse fields of applications such as health care to environmental.

show abstract

Section: Introductionmentioning

confidence: 99%

Mixed Phytochemicals Mediated Synthesis of Multifunctional Ag–Au–Pd Nanoparticles for Glucose Oxidation and Antimicrobial Applications

Rao

Paria

2015

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…26,27 Briefly, 10 mL of aqueous 0.1% metal salt (HAuCl 4 Á3H 2 O) was heated to boil and 2 mL of 1% trisodium citrate was then added with stirring. Synthesis of bi-metallic Au/Pt colloidal nanoparticles.…”

Section: Methodsmentioning

confidence: 99%

Surface enhanced vibrational spectroscopy and first-principles study of l-cysteine adsorption on noble trimetallic Au/Pt@Rh clusters

Loganathan

Chandraboss

Senthilvelan

et al. 2015

Phys. Chem. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

The Rh shell of the Au/Pt/Rh trimetallic nanoparticles induces a wide variety of interesting surface reactions by allowing the adsorption of amino acids like L-cysteine (L-Cys). We present a snapshot of theoretical and experimental investigation of L-Cys adsorption on the surface of noble trimetallic Au/Pt@Rh colloidal nanocomposites. Density functional theoretical (DFT) investigations of L-Cys interaction with the Rhodium (Rh) shell of a trimetallic Au/Pt@Rh cluster in terms of geometry, binding energy (E(B)), binding site, energy gap (E(g)), electronic and spectral properties have been performed. L-Cys establishes a strong interaction with the Rh shell. It binds to Rh by the S1-site, which makes a stable L-Cys-Rh surface complex. DFT can be taken as a valuable tool to assign the vibrational spectra of the adsorption of L-Cys on trimetallic Au/Pt@Rh colloidal nanocomposites and mono-metallic Rh nanoparticles. Surface-enhanced infrared spectroscopy (SEIRS) with L-Cys on a Rh6 cluster surface has been simulated for the first time. Experimental information on the L-Cys-Rh surface complex is included to examine the interaction. The experimental spectral observations are in good agreement with the simulated DFT results. Characterization of the synthesized trimetallic Au/Pt@Rh colloidal nanocomposites has been done by high-resolution transmission electron microscopy (HR-TEM) with selected area electron diffraction (SAED) pattern, energy dispersive X-ray (EDX) spectroscopy, dynamic light scattering (DLS) measurements, zeta potential, zeta deviation analysis and UV-visible (UV-Vis) spectroscopic studies.

show abstract

“…But, in the case of Au-Pt-Ag trimetallic nanocomposites, a clear single absorbance at 528 nm was attributed to the surface plasmon resonance of trimetallic nanoparticles. The absence of multiple bands in the spectrum also rules out the presence of individual Au, Pt, and Ag nanoparticles in the dispersion [16]. …”

Section: Uv-vis Spectral Studiesmentioning

confidence: 97%

“…Citrate-stabilized Au nanoparticles were prepared according to the reported method by us [16]. Briefly, 10 mL of aqueous 0.1% HAuCl 4 ⋅3H 2 O was heated to a boiling and 2 mL of 1% trisodium citrate was then added with stirring.…”

Section: 21mentioning

confidence: 99%

Rapid Green Synthetic Protocol for Novel Trimetallic Nanoparticles

Karthikeyan

Loganathan

2013

Journal of Nanoparticles

Self Cite

View full text Add to dashboard Cite

Metallic nanocomposites and nanotubes can be rapidly prepared under microwave irradiation (MW) from an aqueous solution of metallic precursors in the presence of trisodium citrate as a reductant. For the nanotubes nanoparticles are stabilized by poly(Nvinyl-2-pyrrolidone) (PVP), a protecting agent. PVP is a typical capping and structure-directing agent used for the synthesis of various metallic nanostructures. In this work, we have demonstrated for the first time an MW irradiation approach for the synthesis of trimetallic nanocomposites and nanotubes. The resulting nanohybrids were characterized by UV-Vis spectroscopic analysis, high-resolution scanning electron microscopy (HR-SEM), energy dispersive X-ray spectroscopic analysis (EDX), and Xray diffractometer (XRD) techniques.

show abstract

Strategic green synthesis and characterization of Au/Pt/Ag trimetallic nanocomposites

Cited by 37 publications

References 15 publications

Mixed Phytochemicals Mediated Synthesis of Multifunctional Ag–Au–Pd Nanoparticles for Glucose Oxidation and Antimicrobial Applications

Mixed Phytochemicals Mediated Synthesis of Multifunctional Ag–Au–Pd Nanoparticles for Glucose Oxidation and Antimicrobial Applications

Surface enhanced vibrational spectroscopy and first-principles study of l-cysteine adsorption on noble trimetallic Au/Pt@Rh clusters

Rapid Green Synthetic Protocol for Novel Trimetallic Nanoparticles

Contact Info

Product

Resources

About