Fabricating series of controllable-porosity carbon nanofibers-based palladium nanoparticles catalyst with enhanced performances and reusability

Guo, Liping; Bai, Jie; Wang, Junzhong; Liang, Heng; Li, Chunping; Sun, Wei; Meng, Qingrun

doi:10.1016/j.molcata.2015.02.009

Cited by 29 publications

(7 citation statements)

References 40 publications

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“…As the structure of polymer fibers is switched from a solid structure to a porous one, several characteristics are also altered including increased specific surface area, large porosity, small interwoven pores, and functional versatility. These properties are particularly-favorable for fulfilling a wide range of applications, including ultra-filtration [ 205 ] absorption [ 206 ], ion-exchange [ 207 ], and as a support or carrier for reagents and catalysts [ 208 ]. Researchers have devoted a significant amount of effort toward acquiring porous structures and further promoting their practical applications.…”

Section: Diverse Morphologies Of Electrospun Polymer Nanofibersmentioning

confidence: 99%

Fabrication of Electrospun Polymer Nanofibers with Diverse Morphologies

et al. 2019

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Fiber structures with nanoscale diameters offer many fascinating features, such as excellent mechanical properties and high specific surface areas, making them attractive for many applications. Among a variety of technologies for preparing nanofibers, electrospinning is rapidly evolving into a simple process, which is capable of forming diverse morphologies due to its flexibility, functionality, and simplicity. In such review, more emphasis is put on the construction of polymer nanofiber structures and their potential applications. Other issues of electrospinning device, mechanism, and prospects, are also discussed. Specifically, by carefully regulating the operating condition, modifying needle device, optimizing properties of the polymer solutions, some unique structures of core–shell, side-by-side, multilayer, hollow interior, and high porosity can be obtained. Taken together, these well-organized polymer nanofibers can be of great interest in biomedicine, nutrition, bioengineering, pharmaceutics, and healthcare applications.

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Section: Diverse Morphologies Of Electrospun Polymer Nanofibersmentioning

confidence: 99%

Fabrication of Electrospun Polymer Nanofibers with Diverse Morphologies

et al. 2019

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“…Its efficiency is enhanced when dispersed on a substrate with an increased surface area, among which carbon-based supports are the most widely employed [7]. To further increase the specific surface area in catalysis reactions, various nanoscale carbonaceous-shaped supports have been recently employed as substrates for palladium, among which could be noted carbon nanoparticles [8], nanofibers [9], hollow nanospheres [10], or nanotubes [1,11]. Usually, a three-step "wet" synthesis of nanoscale carbon-supported Pd is employed [1,[9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…To further increase the specific surface area in catalysis reactions, various nanoscale carbonaceous-shaped supports have been recently employed as substrates for palladium, among which could be noted carbon nanoparticles [8], nanofibers [9], hollow nanospheres [10], or nanotubes [1,11]. Usually, a three-step "wet" synthesis of nanoscale carbon-supported Pd is employed [1,[9][10][11]. Firstly, the nanomaterial is obtained by chemical vapor deposition, arc deposition, or physical vapor deposition, onto which Pd 2+ ions (as such, or as complexes) are adsorbed, followed by the chemical or electrochemical reduction of Pd 2+ to metallic Pd [11].…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanoparticle‐Supported Pd Obtained by Solar Physical Vapor Deposition

Pascu

Stanciu

Croitoru

et al. 2018

Advances in Materials Science and Engineering

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Palladium supported on carbon nanoparticles has been obtained on a specially designed ceramic catalyst, obtained by thermal spraying on a copper substrate, starting from Pd/C targets. Solar physical vapor deposition in argon, an environment-friendly and energy-efficient alternative to arc or chemical vapor deposition, has been employed as a means of target vaporization at CNRS-PROMES facility in Odeillo, France. e obtained nanoparticles have a spherical-porous morphology with diameters ranging from 50 to 120 nm and specific sorption areas of 50,000 m 2 /g. e XRD diffractograms indicate the presence of dominatingly crystalline short-range ordered graphene oxide layers, in contrast with the amorphous Pd/C starting precursor. e presence of palladium (0.6% wt.) at the surface of the nanoparticles was proved by the EDX and XRD analyses, making the synthesized material useful in applications such as catalysis or gas sorption.

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“…In general, the methods used for the incorporation of NPs on the electrospun polymer fibers are: (i) direct attachment of noble metal NPs via electrostatic force, hydrogen bonding, or binding through functional groups on NPs, (ii) loading of precursor noble ions through ion‐exchange/complexation with binding sites on the fibers and subsequent in situ chemical reduction, and (iii) hydrothermal assisted methods mostly used for the metal oxide NPs . The different electrospun fibers made up of chitosan/poly(methacrylic acid), poly(ε‐caprolactone) surface functionalized with poly(dopamine), porous carbon nanofibers formed by precursor fibers of poly(styrene)/poly(acrylonitrile) (PAN), polyacrylic acid/polyvinyl alcohol (PVA), polyethyleneimine/PVA, poly( l ‐lactic acid)/amino‐functionalized silsesquioxane, nanoporous PVA mat, carbon nanofibers prepared from electrospun PVA mat, etc., have been used to host metal nanocatalysts for the organic transformations and inorganic reductions. The sulfonic group functionalized PAN fibers have been found to be efficient heterogeneous catalysts for the acetalization and esterification organic reactions .…”

Section: Introductionmentioning

confidence: 99%

Dual-Functional Grafted Electrospun Polymer Microfiber Scaffold Hosted Palladium Nanoparticles for Catalyzing Redox Reactions

Chappa

Bharath

Oommen

et al. 2017

Macromol. Chem. Phys.

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Porous poly(ether sulfone) (PES) microfiber mat has been prepared by electrospinning technique using the optimized conditions. The reducing moiety has been attached covalently to the PES microfiber mat by UV‐graft polymerization of glycidylmethacrylate, and reacting subsequently with hydrazine via epoxy ring opening. The grafted polymer shell around porous microfiber has been found to perform the reduction of precursor ions by grafted hydrazine which leads to the nucleation and growth of Pd nanoparticles (NPs) on the host matrix itself. The catalytic activities and reduction kinetics of the microfiber hosted Pd NPs have been examined in the reductions of CrVI and UVI ions with in situ hydrogen generated by the formic acid decomposition at 50 °C, and p‐nitrophenol with borohydride/hydrazine at room temperature. Thus, hosted Pd NPs exhibit higher catalytic activity with respect to that reported in literature, and also the host matrix provides reasonably good recyclability and shelf‐life to Pd NPs.

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Fabricating series of controllable-porosity carbon nanofibers-based palladium nanoparticles catalyst with enhanced performances and reusability

Cited by 29 publications

References 40 publications

Fabrication of Electrospun Polymer Nanofibers with Diverse Morphologies

Fabrication of Electrospun Polymer Nanofibers with Diverse Morphologies

Carbon Nanoparticle‐Supported Pd Obtained by Solar Physical Vapor Deposition

Dual-Functional Grafted Electrospun Polymer Microfiber Scaffold Hosted Palladium Nanoparticles for Catalyzing Redox Reactions

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