Structure controlled Au@Pd NPs/rGO as robust heterogeneous catalyst for Suzuki coupling in biowaste‐derived water extract of pomegranate ash

Appa, Rama Moorthy; Raghavendra, P.; Lakshmidevi, Jangam; Naidu, Bandameeda Ramesh; Sarma, Loka Subramanyam; Venkateswarlu, Katta

doi:10.1002/aoc.6188

Cited by 14 publications

(3 citation statements)

References 63 publications

(71 reference statements)

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“…In the same year, Ramamoorthy et al developed Au core -Pd shell / rGO as a catalyst for Suzuki coupling reaction in pomegranate ash as an additive and in presence of ethanol as solvent at room temperature under open air (Scheme 30). [91] They investigated broad scope extension with a high yield obtained. Furthermore, the hydrogen adsorption region was monitored from CV (cyclic voltammetry) as a prepared catalyst (fresh and used), and no changes were observed in that surface area.…”

Section: In Suzuki Coupling Reactionmentioning

confidence: 99%

Recent Advances in Graphene and Graphene‐Based Heterogeneous Nanocatalysts: C−C And C−Y Coupling Reactions in Liquid Phase

Paunkumar

Babu

2022

ChemistrySelect

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Up to date, graphene has been widely used in organic transformations as a supporting material due to its superior physical and chemical properties as well as being cost‐effective. Metal nanocomposite as a catalyst has been studied in the formation of carbon‐carbon and carbon‐heteroatom bonds formation reactions such as Suzuki, Ullmann, Heck, Sonogashira, C−O, C−N, and C−S cross‐coupling reactions. The efficient catalysts were characterized by analytical and microscopic techniques and investigated their reusability. The reactions gave the desired products (pharmaceutical intermediate products) an easier path. This review mainly focuses on metal nanoparticles supported by graphene derivatives towards the C−C and C−Y (Y=O, S, N) cross‐coupling reactions in liquid phase heterogeneous catalysis.

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Section: In Suzuki Coupling Reactionmentioning

confidence: 99%

Recent Advances in Graphene and Graphene‐Based Heterogeneous Nanocatalysts: C−C And C−Y Coupling Reactions in Liquid Phase

Paunkumar

Babu

2022

ChemistrySelect

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“…The analysis shows 0.98 ppm of Pd leaching after the first catalytic cycle. It was found that the mechanism of Pd-nanoparticle-catalyzed C–C coupling reactions can be homogeneous, heterogeneous, or a mixture of those two mechanisms (oxidative addition at Pd NP surface, followed by the leaching of the [Pd(Ar)X] species, which goes through the homogeneous catalytic cycle). − The loss of catalytic activity in the recyclability test of the Suzuki–Miyaura cross-coupling reaction could be the result of the homogeneous or mixed (homogeneous–heterogeneous) reaction mechanism. Thus, the result of the recyclability test implies that the redeposition of homogeneous palladium species on the CVS-ZnO support is not efficient enough.…”

Section: Resultsmentioning

confidence: 99%

Pd Nanoparticles Supported on Ultrapure ZnO Nanopowders as Reusable Multipurpose Catalysts

Kokanović,

Ajdačić,

Terzić Jovanović

et al. 2023

ACS Appl. Nano Mater.

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Herein, we report the synthesis and application of a highly active and versatile Pd/chemical vapor synthesis-ZnO (Pd/CVS-ZnO) catalytic system. The two-step preparation of the catalyst includes chemical vapor synthesis (CVS) of ultrapure ZnO nanotetrapods, followed by the liquid-phase in situ reduction of a Pd precursor and deposition of polycrystalline Pd nanoparticles (∼6 nm). The as-synthesized catalyst was characterized using standard instrumental techniques. The catalyst was successfully applied in four chemical reactions: Suzuki–Miyaura cross-coupling, reduction of nitroarenes, decarbonylation, and hydrodebromination of aromatic compounds, of which, the latter two are reported for the first time for the Pd/ZnO catalytic system. The catalyst showed excellent activity within a wide range of substrates, delivering the products in high yields (70–99%). The recyclability of the Pd/CVS-ZnO catalyst was tested through two different approaches. First, the catalyst recyclability was examined in all four reactions, reusing the catalyst up to four times in the Suzuki–Miyaura cross-coupling reaction, as well as the reduction of 4-nitrobenzonitrile, without a significant loss of yield. Furthermore, the catalyst was successively used in three different reactions, showing a high degree of stability and delivering excellent product yields in all cases. In addition to its excellent activity, versatility, and stability, the Pd/CVS-ZnO catalytic system also exhibits excellent recyclability over consecutive runs, which makes it a promising candidate for future application in complex industrial processes.

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“…The construction of Au-Cu/NPZ/CPE was done via Galvanic replacement technique and the sensor represented favorable analytical properties such as rapid response time, high sensitivity and wide linear range. Graphene oxide supported Au-Pd bimetallic nanoparticle with a core-shell morphology was synthesized by using water extract of pomegranate ash (WEPA) [32]. The core-shell structure of Au-Pd/rGO made a positive contribution in achieving the Suzuki coupling reaction in a very short time.…”

Section: Bio-waste Approach For Synthesizing Bimetallic Nanoparticlesmentioning

confidence: 99%

Synthesis of Bimetallic Nanoparticles and Applications—An Updated Review

Idris

Roy

2023

Crystals

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The manipulation of matter at the atomic level (nanotechnology) has experienced an explosion in research interest in recent years. Bimetallic nanoparticles are vital due to their high biocompatibility, stability and comparatively less toxicity. The synthesis methods that include physical, chemical and biological methods are explored and explained in detail, along with their advantages. They have a wide range of applications due to their synergistic properties including biological applications (in medicine and agriculture), environmental application (in water treatment and removal of toxic contaminants), engineering application (in nanosensors, nanochips and nano-semiconductors) and chemical and physical application (in optics, catalysis and paints). The green synthesis approach is a promising method of synthesis that can give rise to more biocompatible and less toxic bimetallic nanoparticles due to increasing environmental pollution. However, despite these interesting attributes of bimetallic nanoparticle, there is still much work to be done to improve the biocompatibility of bimetallic nanoparticles because of their toxicity and potentially hazardous effects.

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Structure controlled Au@Pd NPs/rGO as robust heterogeneous catalyst for Suzuki coupling in biowaste‐derived water extract of pomegranate ash

Cited by 14 publications

References 63 publications

Recent Advances in Graphene and Graphene‐Based Heterogeneous Nanocatalysts: C−C And C−Y Coupling Reactions in Liquid Phase

Recent Advances in Graphene and Graphene‐Based Heterogeneous Nanocatalysts: C−C And C−Y Coupling Reactions in Liquid Phase

Pd Nanoparticles Supported on Ultrapure ZnO Nanopowders as Reusable Multipurpose Catalysts

Synthesis of Bimetallic Nanoparticles and Applications—An Updated Review

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