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Surface enriched palladium on palladium-copper bimetallic nanoparticles as catalyst for polycyclic triazoles synthesis
Rajib Saha, Dhanarajan Arunprasath,
Published in Academic Press Inc.
2019
Volume: 377
   
Pages: 673 - 683
Abstract
Transition-metal nanoparticles (NPs) gained interest as a catalyst due to their high reactivity and recyclability. Monometallic NPs are less catalytic active compared to homogeneous counterparts as less number of catalytic active metal atoms are present on the surface of NPs and metal atoms present in the core part of the NPs are not utilized. It is necessary to synthesize a stable, reusable, highly reactive and economic catalyst which contain a more number of catalytic active precious metal atoms on the surface of NPs. Here in we have synthesized metal-carbon bond stabilized, alloy structured Pd/Cu bimetallic nanoparticles using binaphthyl moiety as a stabilizer (Pd/Cu-BNP). The enrichment of catalytically active precious Pd atoms over inexpensive Cu on the surface was observed with a narrow size distribution of the nanoparticles (average diameter 3 ± 0.5 nm). The Pd/Cu-BNP was used as an efficient and recyclable catalyst for the synthesis of polycyclic triazoles through domino alkyne insertion and C[sbnd]H bond functionalization reaction sequence. © 2019
About the journal
JournalJournal of Catalysis
PublisherAcademic Press Inc.
ISSN00219517
Open AccessNo
Concepts (14)
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    Atoms
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    Copper
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    Metal nanoparticles
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    Palladium
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    Synthesis (chemical)
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    ALKYNE INSERTIONS
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    Bimetallic nanoparticles
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    FUNCTIONALIZATION REACTIONS
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    Functionalizations
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    NANOCATALYSIS
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    Narrow size distributions
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    POLYCYLIC TRIAZOLES
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    RECYCLABLE CATALYST
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    Nanocatalysts