Facile synthesis of biogenic gold nanocatalyst for efficient degradation of organic pollutants

Devi, Henam Sylvia; Singh, Narendra; Singh, Henam Premananda; Singh, Th. David

doi:10.1016/j.jece.2015.07.014

Cited by 27 publications

(10 citation statements)

References 42 publications

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“…Gold-Based Nanocatalysts. Since the pioneering studies of Haruta et al [122], gold nanocatalysts have become widely used nanoparticles for oxidation [123], reduction [124], hydrogenation [125], homocoupling [126], degradation of organic pollutants [127], and electrochemical sensor applications [128]. In order to expose more atoms on the surface, gold nanoparticles are usually dispersed on a suitable support such as activated carbon [129], starch [130], silica [131], metal oxide [132], and resin [133].…”

Section: Copper-based Nanocatalystsmentioning

confidence: 99%

Recent Developments in Nanostructured Palladium and Other Metal Catalysts for Organic Transformation

Hussain

Kamal

Hossain

2019

Journal of Nanomaterials

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Nanocatalysis is an emerging field of research and is applicable to nearly all kinds of catalytic organic conversions. Nanotechnology is playing an important role in both industrial applications and academic research. The catalytic activities become pronounced as the size of the catalyst reduces and the surface area-to-volume ratio increases which ultimately enhance the activity and selectivity of nanocatalysts. Similarly, the morphology of the particles also has a great impact on the activity and selectivity of nanocatalysts. Moreover, the electronic properties and geometric structure of nanocatalysts can be affected by polar and nonpolar solvents. Various forms of nanocatalysts have been reported including supported nanocatalysts, Schiff-based nanocatalysts, graphene-based nanocatalysts, thin-film nanocatalysts, mixed metal oxide nanocatalysts, magnetic nanocatalysts, and core-shell nanocatalysts. Among a variety of different rare earth and transition metals, palladium-based nanocatalysts have been extensively studied both in academia and in the industry because of their applications such as in carbon-carbon cross-coupling reactions, carbon-carbon homocoupling reactions, carbon-heteroatom cross-coupling reactions, and C-H activation, hydrogenation, esterification, oxidation, and reduction. The current review highlights the recent developments in the synthesis of palladium and some other metal nanocatalysts and their potential applications in various organic reactions.

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Section: Copper-based Nanocatalystsmentioning

confidence: 99%

Recent Developments in Nanostructured Palladium and Other Metal Catalysts for Organic Transformation

Hussain

Kamal

Hossain

2019

Journal of Nanomaterials

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“…Moreover, these nanoparticles were used as catalyst to degrade organic pollutants. It was concluded that degradation of pollutants becomes very fast in the presence of gold nanoparticles (Devi and others ).…”

Section: Pudica Mediated Synthesis Of Nanoparticlesmentioning

confidence: 99%

Mimosa pudica L., a High‐Value Medicinal Plant as a Source of Bioactives for Pharmaceuticals

Muhammad

Hussain

Jantan³

et al. 2015

Comp Rev Food Sci Food Safe

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Mimosa pudica Linn. (Family: Mimosaceae) is used as an ornamental plant due to its thigmonastic and nyctinastic movements. M. pudica is also used to avoid or cure several disorders like cancer, diabetes, hepatitis, obesity, and urinary infections. M. pudica is famous for its anticancer alkaloid, mimosine, along with several valuable secondary metabolites like tannins, steroids, flavonoids, triterpenes, and glycosylflavones. A wide array of pharmacological properties like antioxidant, antibacterial, antifungal, anti-inflammatory, hepatoprotective, antinociceptive, anticonvulsant, antidepressant, antidiarrheal, hypolipidemic activities, diuretic, antiparasitic, antimalarial, and hypoglycemic have been attributed to different parts of M. pudica. Glucuronoxylan polysaccharide extruded from seeds of M. pudica is used for drug release formulations due to its high swelling index. This review covers a thorough examination of functional bioactives as well as pharmacological and phytomedicinal attributes of the plant with the purpose of exploring its pharmaceutical and nutraceutical potentials.

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“…While, Figure shows FT‐IR spectrum of lemon grass leaves extract and thoroughly washed nanoscale particles. All the spectra reveal a sharp band at 1653 cm −1 corresponding to C═O stretching vibration in carbonyl compounds which may be characterized by the presence of terpenoids and flavonoids . The broad band in region around 3355 cm −1 is due to O―H stretching vibrational frequencies and due to the wide variety of hydrogen bonding between O―H groups revealing the inclusion of polyphenolic compounds.…”

Section: Resultsmentioning

confidence: 94%

An insight into the effect of composition for enhance catalytic performance of biogenic Au/Ag bimetallic nanoparticles

Leishangthem

Yumkhaibam

Henam

et al. 2018

J of Physical Organic Chem

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A comprehensive knowledge of composition-activity property relationship of nanoparticulate materials is highly desirable for applications in various catalysis reactions. We have addressed a facile green aqueous approach for preparation of Au, Ag monometallic, Au/Ag alloy as well as core-shell bimetallic nanoparticles. The phytochemicals present in lemon grass leaves extract were employed both as natural reducing and capping agents at room temperature.X-ray diffraction pattern, UV-Vis spectroscopy, and energy dispersive X-ray studies confirmed the formation of bimetallic system. The ensuing Au core/ Ag shell and Au/Ag alloy bimetallic nanoparticles were crystalline and spherical in nature with identical average diameter of~18 nm as measured via transmission electron microscopy. The bimetallic systems incredibly display higher catalytic potential than their monometallic counterparts which were vividly reckoned on structural effect, lattice compression, and synergistic electronic effect.

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Facile synthesis of biogenic gold nanocatalyst for efficient degradation of organic pollutants

Cited by 27 publications

References 42 publications

Recent Developments in Nanostructured Palladium and Other Metal Catalysts for Organic Transformation

Recent Developments in Nanostructured Palladium and Other Metal Catalysts for Organic Transformation

Mimosa pudica L., a High‐Value Medicinal Plant as a Source of Bioactives for Pharmaceuticals

An insight into the effect of composition for enhance catalytic performance of biogenic Au/Ag bimetallic nanoparticles

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