Microwave assisted one pot synthesis of biocompatible gold nanoparticles in Triton X-100 aqueous micellar medium using tryptophan as reducing agent

Aswathy, B.; Suji, S.; Avadhani, G. S.; Aswathy, R.; Suganthi, S.; George, Sony

doi:10.1016/j.molliq.2011.06.019

Cited by 14 publications

(9 citation statements)

References 31 publications

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Section: Microwave-assisted Preparation Of Nanostructures In Aqueous ...mentioning

confidence: 99%

“…In most cases, a variety of reducing reagents were adopted for the microwave-assisted preparation of Au nanostructures in aqueous solution, including NaBH 4 , hydrazine hydrate, poly(vinylpyrrolidone) (PVP), citric acid or sodium citrate, − α- d -glucose, sucrose, and maltose, amino acid, 2-naphthol, poly allylamine hydrochloride, and 2,7-dihydroxy naphthalene . In some reaction systems, an additive or a surfactant such as cetyltrimethylammonium bromide (CTAB), ,, PVP, PVP/sodium dodecyl sulfate (SDS), Triton X-100, and pluronic was used. Au nanostructures with various shapes have been reported, such as nanoparticles, − ,,,,− prisms/cubes/hexagons, polygonal/triangular/prisms, , ginger-like nanobranches, hexagon-shaped Au nanoplates, and triangular/hexagonal structures …”

Section: Microwave-assisted Preparation Of Nanostructures In Aqueous ...mentioning

confidence: 99%

“…In some reaction systems, an additive or a surfactant such as cetyltrimethylammonium bromide (CTAB), ,, PVP, PVP/sodium dodecyl sulfate (SDS), Triton X-100, and pluronic was used. Au nanostructures with various shapes have been reported, such as nanoparticles, − ,,,,− prisms/cubes/hexagons, polygonal/triangular/prisms, , ginger-like nanobranches, hexagon-shaped Au nanoplates, and triangular/hexagonal structures …”

Section: Microwave-assisted Preparation Of Nanostructures In Aqueous ...mentioning

confidence: 99%

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Microwave-Assisted Preparation of Inorganic Nanostructures in Liquid Phase

2014

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Section: Microwave-assisted Preparation Of Nanostructures In Aqueous ...mentioning

confidence: 99%

Section: Microwave-assisted Preparation Of Nanostructures In Aqueous ...mentioning

confidence: 99%

Section: Microwave-assisted Preparation Of Nanostructures In Aqueous ...mentioning

confidence: 99%

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Microwave-Assisted Preparation of Inorganic Nanostructures in Liquid Phase

2014

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“…Despite being a popular nonionic surfactant, Triton X‐100 (TX‐100) is not commonly used for gold nanoparticle synthesis. Gold colloids have been previously generated through photo‐irradiation or microwave induced nucleation of nanoparticles from a solution of gold precursor in Triton X‐100, however these studies have been limited to spherical nanoparticles. More recently, branched nanoparticles with well‐defined tips have been reported to be synthesized in this surfactant using both seeded and nonseeded approaches.…”

Section: Introductionmentioning

confidence: 99%

Simple and Rapid High-Yield Synthesis and Size Sorting of Multibranched Hollow Gold Nanoparticles with Highly Tunable NIR Plasmon Resonances

Blanch

Döblinger

Rodrı́guez-Fernández

2015

Small

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Branched gold nanoparticles with sharp tips are considered excellent candidates for sensing and field enhancement applications. Here, a rapid and simple synthesis strategy is presented that generates highly branched gold nanoparticles with hollow cores and a ca.100% yield through a simple one-pot seedless reaction at room temperature in the presence of Triton X-100. It is shown that multibranched hollow gold nanoparticles of tunable dimensions, branch density and branch length can be obtained by adjusting the concentrations of the reactants. Insights into the formation mechanism point toward an aggregative type of growth involving hollow core formation first, and branching thereafter. The pronounced near-infrared (NIR) plasmon band of the nanoparticles is due to the combined contribution from hollowness and branching, and can be tuned over a wide range (≈700-2000 nm). It is also demonstrated that the high environmental sensitivity of colloidal dispersions based on multibranched hollow gold nanoparticles can be boosted even further by separating the nanoparticles into fractions of given sizes and improved monodispersity by means of a glycerol density gradient. The possibility to obtain highly monodisperse multibranched hollow gold nanoparticles with predictable dimensions (50-300 nm) and branching and, therefore, tailored NIR plasmonic properties, highlights their potential for theranostic applications.

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“…This suggests that the hydrophilic polyoxymethylene group effectively caps the Pt 2+ and Co 3+ ions, while the oxygen of the C−O bond interacts with Pt 2+ or Co 2+ ions. 46 Figure 1d also shows the FTIR spectra for samples containing varying TX:FA ratios.…”

Section: Resultsmentioning

confidence: 99%

Embedded Platinum–Cobalt Nanoalloys in Biomass-Derived Laser-Induced Graphene as Stable, Air-Breathing Cathodes for Zinc–Air Batteries

Aldhafeeri

Uceda

Singh

et al. 2023

ACS Appl. Nano Mater.

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Fuel cells and metal–air batteries hold significant promise to help decarbonize transportation and the electricity grid. To encourage widespread adoption of these technologies, improvements to their air-breathing cathodes are required, which address problems such as the high cost of platinum (Pt) catalysts used to boost the kinetics of the oxygen reduction reaction (ORR) as well as the stability of Pt/C interfaces over long-term cycling. In this paper, we demonstrate a facile approach to reduce Pt content to less than 2 wt % by interfacing Pt with CoO x as well-dispersed nanoparticles entrapped within a highly conductive laser-induced graphene (LIG) matrix. Laser-induced carbonization of polymerized furfural alcohol preloaded with Co and Pt precursors resulted in the formation of a mixture of spherical nanoalloys PtCoO x and core (CoO x )–shell (Pt) structures. This LIG-PtCoO x electrode exhibited a low onset and half-wave potential in alkaline media, which closely approached a benchmark Pt/C. The effectiveness of LIG-PtCoO x was demonstrated by its performance in rotating disk and rotating ring disk electrode studies versus commercial Pt/C with the same concentration of the catalyst, which resulted in 4-fold greater mass activity and more than 6-fold higher specific activity, which are reflected in a high turnover frequency (TOF). The resulting material was tested as an air–cathode for zinc (Zn)–air batteries leading to improved stability (118 h of operation) and rechargeability (0.75 V voltage gap), exhibiting a higher peak power density compared to batteries assembled with the commercial benchmark Pt/C cathodes with similar composition.

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Microwave assisted one pot synthesis of biocompatible gold nanoparticles in Triton X-100 aqueous micellar medium using tryptophan as reducing agent

Cited by 14 publications

References 31 publications

Microwave-Assisted Preparation of Inorganic Nanostructures in Liquid Phase

Microwave-Assisted Preparation of Inorganic Nanostructures in Liquid Phase

Simple and Rapid High-Yield Synthesis and Size Sorting of Multibranched Hollow Gold Nanoparticles with Highly Tunable NIR Plasmon Resonances

Embedded Platinum–Cobalt Nanoalloys in Biomass-Derived Laser-Induced Graphene as Stable, Air-Breathing Cathodes for Zinc–Air Batteries

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