Preparation of Ni/CNTs catalyst with high reducibility and their superior catalytic performance in benzene hydrogenation

Sun, Yong; Li, Changshun; Zhang, Aimin

doi:10.1016/j.apcata.2016.05.011

Cited by 56 publications

(19 citation statements)

References 54 publications

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“…2a 19 . The peak observed at 26° indicates to the (002) diffractions of graphite, which confirms that the hexagonal graphite structure is still in a good state in all samples 20 . The peaks at 2θ of 42.4° and 53.8° refer to the in-plane graphitic structure 21 .…”

Section: Resultssupporting

confidence: 59%

Carbon Nanoparticles-Decorated Carbon Nanotubes

Awadallah‐F

Al‐Muhtaseb

2020

Sci Rep

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Multi walled carbon nanotubes (MWcnts) were decorated by activated carbon nanoparticles of resorcinol-formaldehyde aerogels. carbon nanospheres and MWcnts were mixed by equal mass ratios for different durations. The products were characterized by Raman spectroscopy, thermal gravimetric analysis, nanoscanning electron microscopy, transmission electron microscopy and x-ray diffraction. The results indicated that a significant decoration with carbon nanoparticles occurred onto the MWcnts. Carbon nanotubes (CNTs) drew a remarkable attention from their first discovery. This is attributed to their unique features, such as mechanical properties, electric properties, thermal stability, high chemical resistance and large surface areas 1. As a result of these characteristics, they became strong candidates for numerous applications; including catalytic processes, water treatment, drug delivery, gene transfer, transparent conducting membranes and electrochemical analysis 2-7. The idea of CNT decoration was introduced to widen their applications in different fields. It was reported in various works of literature that it was possible to decorate CNTs with either organic compounds or metallic nanoparticles 8-10. The importance of carbon aerogels is assigned to their hierarchical porous properties, which makes them suitable for use in numerous applications 11-14. For example, carbon aerogels are utilized in catalyst support, separation tools, eclectic supercapacitor materials and battery construction 15,16. It is noteworthy to mention that, to the authors' knowledge, the carbon-carbon decoration of multiwall carbon nanotubes (MWCNTs) by carbon nanoparticles (CNp) was not tackled in literature. Therefore, in this work, we disclose our method of decorating MWCNTs with resorcinol-formaldehyde activated carbon aerogel (RFA) CNp. The hybrid carbon nanoproducts will be characterized by various devices for tracking the changes of outcome carbon nanoproducts.

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Section: Resultssupporting

confidence: 59%

Carbon Nanoparticles-Decorated Carbon Nanotubes

Awadallah‐F

Al‐Muhtaseb

2020

Sci Rep

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“…† The Ni 2p spectra showed four main peaks, which could be assigned to Ni 0 , NiO, Ni(OH) 2 , and the satellite signal. 41,42 The ratio dened as Ni 0 / ), exhibited a signicant change in different catalysts; it dropped from an initial of 88% to 63.7% with the increase in the reduction temperature. These results indicated that the molybdenum oxide on the surface of NiMoO x /MC was not completely reduced, even when the temperature was relatively high.…”

Section: Characterization Of the As-synthesized Catalystsmentioning

confidence: 99%

Ultrafine NiMoO_x nanoparticles confined in mesoporous carbon for the reduction of nitroarenes: effect of the composition and accessibility of the active sites

Song

et al. 2019

RSC Adv.

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“…And for the case of mono-metal Ni-based carbonate, just the metallic Ni with two crystalline phases can be obtained (Figure S2B), maybe due to the reduction of ethylene glycol for the Ni species. 41,42 In order to give an further understand on the structural/morphological features of the CNCO-20, (HR) TEM measurements were conducted. Representatively, the as-synthesized CNCO-20 can be clearly seen as nanospherical structure, which is assembled with a lamellar sub-unites (Figure 3A,B).…”

Section: Synthesis and Structural Analysismentioning

confidence: 99%

“…The 100th discharge profile consists of three plateaus according to the peaks in the corresponding dQ/dV curve, and the corresponding peaks are located at 0.1-1.0, 1.0-1.6, and 1.6-3.0 V, respectively. The voltage below 0.8 V can be ascribed to the surface-induced Li-storage process, 42,47 estimated as ~59.9 mAh g À1 , and the voltages at 1. 13 (Ni 0 !…”

Section: Electrochemical Evaluationmentioning

confidence: 99%

Formation of solid‐solution Co _x Ni _{1−
x} CO ₃ as high‐performance anode materials for lithium‐ion batteries

Wang

Zhao

Zhang

et al. 2022

Intl J of Energy Research

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Transition metal carbonates (TMCs) as high-performance anode materials for lithium-ion batteries (LIBs) have attracted intensive research interests in recent years. Nanostructures with abundant pore channels can well address the volume change during the Li + insertion/desertion process and shorten the ionic diffusion length. Multi-component carbonates with excellent porous structures exhibit enhanced electrochemical performance in contrast to the mono-component carbonates due to the synergistic effect among multi-metal elements. Herein, we used a simple solvothermal method to synthesize Cobased solid-solution carbonates Co x Ni 1Àx CO 3 to obtain different microstructures by changing the content of the precipitant. The optimized solid-solution Co 2/3 Ni 1/3 CO 3 (CNCO-20) delivers a high initial Coulombic efficiency of 83%,a reversible high-rate capacity of 828.1 mAh g À1 at 2.0 A g À1 , and good electrochemical stability with a reversible capacity of 740.9 mAh g À1 after 500 chargedischarge cycles at 1.0 A g À1 due to the enhanced electronic/ionic transport, sufficient electroactive sites, and improved electrochemical stabilities. Considering the excellent specific capacity and long life-span, the synthesized solidsolution CNCO-20 demonstrate great promise as an alternative anode electrode material compared to conventional materials for LIBs. K E Y W O R D S lithium-ion batteries, multi-component carbonates, solid-solution Co x Ni 1Àx CO 3 , solvothermal method, transition metal carbonates

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Preparation of Ni/CNTs catalyst with high reducibility and their superior catalytic performance in benzene hydrogenation

Cited by 56 publications

References 54 publications

Carbon Nanoparticles-Decorated Carbon Nanotubes

Carbon Nanoparticles-Decorated Carbon Nanotubes

Ultrafine NiMoO_x nanoparticles confined in mesoporous carbon for the reduction of nitroarenes: effect of the composition and accessibility of the active sites

Formation of solid‐solution Co _x Ni _{1−
x} CO ₃ as high‐performance anode materials for lithium‐ion batteries

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Preparation of Ni/CNTs catalyst with high reducibility and their superior catalytic performance in benzene hydrogenation

Cited by 56 publications

References 54 publications

Carbon Nanoparticles-Decorated Carbon Nanotubes

Carbon Nanoparticles-Decorated Carbon Nanotubes

Ultrafine NiMoOx nanoparticles confined in mesoporous carbon for the reduction of nitroarenes: effect of the composition and accessibility of the active sites

Formation of solid‐solution Co x Ni 1− x CO 3 as high‐performance anode materials for lithium‐ion batteries

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Product

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Ultrafine NiMoO_x nanoparticles confined in mesoporous carbon for the reduction of nitroarenes: effect of the composition and accessibility of the active sites

Formation of solid‐solution Co _x Ni _{1−
x} CO ₃ as high‐performance anode materials for lithium‐ion batteries