Journal ArticleDOI
Enhanced catalytic performance by copper nanoparticle–graphene based composite
Paramita Mondal,Arjyabaran Sinha,Noor Salam,Anupam Singha Roy,Nikhil R. Jana,Sk. Manirul Islam +5 more
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TLDR
In this paper, a graphene based composite with copper nanoparticles (Cu-G) has been synthesized and used as catalyst for N-arylation and Oarylation, under mild reaction conditions with excellent yields and selectivities.Abstract:
A graphene based composite with copper nanoparticles (Cu–G) has been synthesized and used as catalyst for N-arylation and O-arylation. The structure and composition of the nanocomposite have been characterized by TEM, AFM, Raman and XPS. The catalytic activity of the Cu–G has been tested for the N-arylation of N–H heterocycles using arylboronic acids and the O-arylation of phenols using aryl halides. The catalytic N-arylation produces N-aryl heterocyles and the catalytic O-arylation produces diaryl ethers, under mild reaction conditions with excellent yields and selectivities. The developed catalyst is air-stable, inexpensive, easy to prepare, easy to recover by simple filtration and can be reused without appreciable loss of activity.read more
Citations
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Journal ArticleDOI
Cu and Cu-Based Nanoparticles: Synthesis and Applications in Catalysis.
Manoj B. Gawande,Anandarup Goswami,François-Xavier Felpin,Tewodros Asefa,Xiaoxi Huang,Rafael Silva,Xiaoxin Zou,Radek Zboril,Rajender S. Varma +8 more
TL;DR: A critical appraisal of different synthetic approaches to Cu and Cu-based nanoparticles and copper nanoparticles immobilized into or supported on various support materials (SiO2, magnetic support materials, etc.), along with their applications in catalysis.
Journal ArticleDOI
Copper Nanoparticles on Graphene Support: An Efficient Photocatalyst for Coupling of Nitroaromatics in Visible Light
TL;DR: This study provides a green photocatalytic route for the production of azo compounds and highlights a potential application for graphene.
Journal ArticleDOI
Metal nanoparticles supported on two-dimensional graphenes as heterogeneous catalysts
TL;DR: The catalytic activity of metal nanoparticles (MNPs) is highly dependent on the nature of the support as mentioned in this paper, which includes a large surface area, strong metal-support interaction, and presence of active sites that participate in the reaction mechanism.
Journal ArticleDOI
One-pot synthesis of porous 1T-phase MoS2 integrated with single-atom Cu doping for enhancing electrocatalytic hydrogen evolution reaction
Liang Ji,Pengfei Yan,Chuanhui Zhu,Chunyan Ma,Wenzhuo Wu,Cong Wei,Yonglong Shen,Shengqi Chu,Jiaou Wang,Yi Du,Jun Chen,Xinan Yang,Qun Xu +12 more
TL;DR: In this article, a facile one-pot solvothermal method was designed to synthesize porous 1T-MoS2 that is integrated with atomic doping of Cu atoms.
Journal ArticleDOI
Barberry fruit extract assisted in situ green synthesis of Cu nanoparticles supported on a reduced graphene oxide–Fe3O4 nanocomposite as a magnetically separable and reusable catalyst for the O-arylation of phenols with aryl halides under ligand-free conditions
Mahmoud Nasrollahzadeh,Mehdi Maham,Akbar Rostami-Vartooni,Mojtaba Bagherzadeh,S. Mohammad Sajadi +4 more
TL;DR: In this paper, a reduced graphene oxide (RGO)-Fe3O4 nanocomposite with barberry fruit extract as a reducing and stabilizing agent was used for the O-arylation of phenols with aryl halides.
References
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The chemistry of graphene oxide
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Aryl-aryl bond formation one century after the discovery of the Ullmann reaction.
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TiO2-Graphene Nanocomposites. UV-Assisted Photocatalytic Reduction of Graphene Oxide
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Modern Synthetic Methods for Copper‐Mediated C(aryl) ? O, C(aryl) ? N, and C(aryl) ? S Bond Formation
Steven V. Ley,Andrew Thomas +1 more
TL;DR: In this article, the authors highlight the recent developments in the copper-mediated (both stoichiometric and catalytic) reactions of aryl boronic acids as reaction partners in both O- and N-arylation.
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Graphene-Based Materials: Synthesis, Characterization, Properties, and Applications
Xiao Huang,Zongyou Yin,Shixin Wu,Xiaoying Qi,Qiyuan He,Qichun Zhang,Qingyu Yan,Freddy Yin Chiang Boey,Hua Zhang +8 more
TL;DR: The synthesis, characterization, properties, and applications of graphene-based materials are discussed and the promising properties together with the ease of processibility and functionalization make graphene- based materials ideal candidates for incorporation into a variety of functional materials.