Highly efficient reusable Pd nanoparticles based on eggshell: Green synthesis, characterization and their application in catalytic reduction of variety of organic dyes and ligand-free oxidative hydroxylation of phenylboronic acid at room temperature

A green synthesis of an Ag/zeolite nanocomposite and its catalytic activity were investigated. Its catalytic efficiency remains unaltered even after several repeated cycles.

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ChemInform Abstract: A Highly Efficient Copper and Ligand Free Protocol for the Room Temperature Sonogashira Reaction.

ChemInform ◽

10.1002/chin.201521096 ◽

2015 ◽

Vol 46 (21) ◽

pp. no-no

Author(s):

Ankur Gogoi ◽

Anindita Dewan ◽

Utpal Bora

Keyword(s):

Room Temperature ◽

Sonogashira Reaction ◽

Highly Efficient ◽

Ligand Free

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Green Synthesis of Silver and Gold Nanoparticles via Sargassum serratifolium Extract for Catalytic Reduction of Organic Dyes

Catalysts ◽

10.3390/catal11030347 ◽

2021 ◽

Vol 11 (3) ◽

pp. 347

Author(s):

Beomjin Kim ◽

Woo Chang Song ◽

Sun Young Park ◽

Geuntae Park

Keyword(s):

Gold Nanoparticles ◽

Green Synthesis ◽

Catalytic Reduction ◽

Organic Dyes ◽

Low Cost ◽

Inorganic Nanoparticles ◽

X Ray ◽

Selected Area Electron Diffraction ◽

Transmission Electron ◽

Sargassum Serratifolium

The green synthesis of inorganic nanoparticles (NPs) using bio-materials has attained enormous attention in recent years due to its simple, eco-friendly, low-cost and non-toxic nature. In this work, silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) were synthesized by the marine algae extract, Sargassum serratifolium (SS). The characteristic studies of bio-synthesized SS-AgNPs and SS-AuNPs were carried out by using ultraviolet–visible (UV–Vis) absorption spectroscopy, dynamic light scattering (DLS), high-resolution transmission electron microscope (HR-TEM), selected area electron diffraction (SAED), energy-dispersive X-ray spectroscopy (EDX), X-ray powder diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). Phytochemicals in the algae extract, such as meroterpenoids, acted as a capping agent for the NPs’ growth. The synthesized Ag and Au NPs were found to have important catalytic activity for the degradation of organic dyes, including methylene blue, rhodamine B and methyl orange. The reduction of dyes by SS-AgNPs and -AuNPs followed the pseudo-first order kinetics.

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A highly efficient copper and ligand free protocol for the room temperature Sonogashira reaction

RSC Advances ◽

10.1039/c4ra09630d ◽

2015 ◽

Vol 5 (1) ◽

pp. 16-19 ◽

Cited By ~ 16

Author(s):

Ankur Gogoi ◽

Anindita Dewan ◽

Utpal Bora

Keyword(s):

Catalytic System ◽

Room Temperature ◽

Sonogashira Reaction ◽

Highly Efficient ◽

Aryl Iodides ◽

Ligand Free

A mild and efficient catalytic system based on PdCl2 and Na2SO4 has been developed for the Sonogashira reaction of aryl iodides at room temperature.

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Graphene oxide–TiO2 composite: an efficient heterogeneous catalyst for the green synthesis of pyrazoles and pyridines

New Journal of Chemistry ◽

10.1039/c5nj03380b ◽

2016 ◽

Vol 40 (6) ◽

pp. 5053-5060 ◽

Cited By ~ 17

Author(s):

Shweta Kumari ◽

Amiya Shekhar ◽

Devendra D. Pathak

Keyword(s):

Graphene Oxide ◽

Green Synthesis ◽

Aqueous Medium ◽

Heterogeneous Catalyst ◽

Room Temperature ◽

Highly Efficient ◽

Recyclable Heterogeneous Catalyst ◽

Efficient Heterogeneous Catalyst

GO–TiO2 has been found to be a highly efficient and recyclable heterogeneous catalyst for the synthesis of pyrazoles and pyridines in aqueous medium at room temperature.

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