Small and uniform Pd monometallic/bimetallic nanoparticles decorated on multi-walled carbon nanotubes for efficient reduction of 4-nitrophenol

Liu, Changhai; Liu, Jie; Zhou, Yu-Yan; Cai, Xin-Lei; Lü, Ying; Gao, Xu; Wang, Sui‐Dong

doi:10.1016/j.carbon.2015.07.003

Cited by 43 publications

(28 citation statements)

References 29 publications

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“…Liu et al . had prepared Pd and Pd‐Au nanoparticles stabilized on multiwalled carbon nanotubes (Pd‐MWCNTs hybrids and Pd/PdAu‐NP‐MWCNT hybrids) by simple metal sputtering onto nanotubes dispersed in ionic liquids and characterized their catalytic properties by the reduction of 4‐NP to 4‐AP.…”

Section: Resultsmentioning

confidence: 99%

Preparation and characterization of core‐shell polystyrene/polyaniline/Pd composites and their catalytic properties for the reduction of 4‐nitrophenol

Sun

Zheng

Lin

et al. 2017

J of Applied Polymer Sci

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Herein, polystyrene/polyaniline/Pd (PS/PANI/Pd) core-shell composite catalysts were prepared by a facile swellingdiffusion-interfacial polymerization method. PS microparticles were firstly prepared by dispersion polymerization and were swollen by aniline monomer without any surface modification. H 2 PdCl 4 acid was used as palladium precursor. The PdCl 22 4 was adsorbed on the surface of aniline-swollen PS microparticles because of the electrostatic attraction between PdCl 22 4 and anilinium positive ions protonated by H 1 , which was diffused from the aniline-swollen PS microparticles. Then HCl solution was added to control the diffusion rate of anilinium positive ions and ammonium persulfate (APS) was used to polymerize the anilinium ions to get PANI shell. Due to the redox activity between PANI and Pd ions, Pd nanoparticles can be in situ formed on the surfaces of PS. Therefore, the core-shell PS/PANI/Pd composite catalysts were obtained. The morphology and structure of the obtained composites was characterized by TEM, FT-IR and EDX. Results showed that the products presented excellent catalytic properties for the reduction of 4nitrophenol (4-NP) to 4-aminophenol (4-AP) in the presence of NaBH 4 by virtue of the interaction between Pd nanoparticles and conducive PANI shell. The catalytic reaction obeyed the pseudo-first-order reaction equations and the reaction rate constants were also calculated in this article.

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Section: Resultsmentioning

confidence: 99%

Preparation and characterization of core‐shell polystyrene/polyaniline/Pd composites and their catalytic properties for the reduction of 4‐nitrophenol

Sun

Zheng

Lin

et al. 2017

J of Applied Polymer Sci

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“…Actually, by increasing the amount of copper, the full hydrogenation of benzene into cyclohexane decreased, showing that copper can also be present on the surface of nanoparticles in close proximity to ruthenium [86]. immobilized on multi-walled carbon nanotubes (MWCNTs) [82]. The as-obtained BMNPs showed an alloy structure, as deduced from HAADF-STEM analysis.…”

Section: Synthesis Of Bmnps In Ionic Liquids By Co-decomposition Of Mmentioning

confidence: 94%

“…Catalysts 2017, 7, 207 12 of 34 immobilized on multi-walled carbon nanotubes (MWCNTs) [82]. The as-obtained BMNPs showed an alloy structure, as deduced from HAADF-STEM analysis.…”

Section: Synthesis Of Bmnps In Ionic Liquids By Co-decomposition Of Mmentioning

confidence: 98%

“…Au-Pd alloys supported on solids have also been reported. Therefore, Wang and co-workers applied the sputtering co-reduction method for the synthesis of Au-Pd BMNPs in [C 1 C 4 Im][BF 4 ] immobilized on multi-walled carbon nanotubes (MWCNTs) [82]. The as-obtained BMNPs showed an alloy structure, as deduced from HAADF-STEM analysis.…”

Section: Synthesis Of Bmnps In Ionic Liquids By Co-decomposition Of Mmentioning

confidence: 99%

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Bimetallic Nanoparticles in Alternative Solvents for Catalytic Purposes

et al. 2017

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Bimetallic nanoparticles represent attractive catalytic systems thanks to the synergy between both partners at the atomic level, mainly induced by electronic effects which in turn are associated with the corresponding structures (alloy, core-shell, hetero-dimer). This type of engineered material can trigger changes in the kinetics of catalyzed processes by variations on the electrophilicity/nucleophilicity of the metal centers involved and also promote cooperative effects to foster organic transformations, including multi-component and multi-step processes. Solvents become a crucial factor in the conception of catalytic processes, not only due to their environmental impact, but also because they can preserve the bimetallic structure during the catalytic reaction and therefore increase the catalyst lifetime. In this frame, the present review focuses on the recent works described in the literature concerning the synthesis of bimetallic nanoparticles in non-conventional solvents, i.e., other than common volatile compounds, for catalytic applications.

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“…As another approach, Wang et al used a bimetallic alloy target instead of a fan shaped binary target to create alloy NPs via sputtering onto an IL [107][108][109]. They reported that Au/Pd alloy NPs produced by sputtering an Au/Pd alloy target onto [BMI][BF 4 ] containing multi-walled carbon nanotubes (CNTs) [107] and graphene [108]. They observed Au/Pd NPs of ca.…”

Section: Sputtering Using An Alloy Targetmentioning

confidence: 99%

Sputtering onto a liquid: interesting physical preparation method for multi-metallic nanoparticles

Nguyen

Yonezawa

2018

Science and Technology of Advanced Materials

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The young history of sputtering onto a liquid features great achievements in the green production of various metal and metal oxide nanoparticles (NPs) and nanoclusters (NCs). Studies on how the sputtering parameters affect the properties of NPs and NCs have elucidated their formation mechanism and marked a crucial role of liquid matrix in the nucleation and growth of particles, controlling their various properties. Current research has been devoted to making alloy bi-and trimetallic NPs with a high level of control over the NP structure, composition, and size via well-designed target systems, sputtering steps, and liquid matrix materials. In this minireview, we discuss the recent advances in the use of various types of targets to prepare different bi-and trimetallic NPs. In single target sputtering, systems with alternative configurations of metals, alloy targets, monometallic targets in sequence, and a combination of sputtering and chemical reactions have been developed. On the other hand, a double head system was introduced to widen the range of controllable sputtering parameters yielding more versatility in particle composition and fine structure. The synergistic and tuneable properties exhibited by the multi-metallic components in small NPs and NCs for their use in catalysis and optical applications are discussed.

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Small and uniform Pd monometallic/bimetallic nanoparticles decorated on multi-walled carbon nanotubes for efficient reduction of 4-nitrophenol

Cited by 43 publications

References 29 publications

Preparation and characterization of core‐shell polystyrene/polyaniline/Pd composites and their catalytic properties for the reduction of 4‐nitrophenol

Preparation and characterization of core‐shell polystyrene/polyaniline/Pd composites and their catalytic properties for the reduction of 4‐nitrophenol

Bimetallic Nanoparticles in Alternative Solvents for Catalytic Purposes

Sputtering onto a liquid: interesting physical preparation method for multi-metallic nanoparticles

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