3D hierarchical cauliflower-like carbon nanotubes/platinum–tin nanostructure and its electrocatalytic activity for ethanoloxidation

Tabet-Aoul, Amel; Mohamedi, Mohamed

doi:10.1039/c1jm13543k

Cited by 30 publications

(25 citation statements)

References 29 publications

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“…In recent years, CNT‐based 3D architectures have received growing interest . Among them, low‐density and porous monoliths (aerogels) have shown great potential for wide application.…”

Section: Structures Properties and Macroscopic Assemblies Of Cntsmentioning

confidence: 99%

Macroscopic Carbon Nanotube‐based 3D Monoliths

Zhao

Zhang

et al. 2015

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Carbon nanotubes (CNTs) are one of the most promising carbon allotropes with incredible diverse physicochemical properties, thereby enjoying continuous worldwide attention since their discovery about two decades ago. From the point of view of practical applications, assembling individual CNTs into macroscopic functional and high-performance materials is of paramount importance. For example, multiscaled CNT-based assemblies including 1D fibers, 2D films, and 3D monoliths have been developed. Among all of these, monolithic 3D CNT architectures with porous structures have attracted increasing interest in the last few years. In this form, theoretically all individual CNTs are well connected and fully expose their surfaces. These 3D architectures have huge specific surface areas, hierarchical pores, and interconnected conductive networks, resulting in enhanced mass/electron transport and countless accessible active sites for diverse applications (e.g. catalysis, capacitors, and sorption). More importantly, the monolithic form of 3D CNT assemblies can impart additional application potentials to materials, such as free-standing electrodes, sensors, and recyclable sorbents. However, scaling the properties of individual CNTs to 3D assemblies, improving use of the diverse, structure-dependent properties of CNTs, and increasing the performance-to-cost ratio are great unsolved challenges for their real commercialization. This review aims to provide a comprehensive introduction of this young and energetic field, i.e., CNT-based 3D monoliths, with a focus on the preparation principles, current synthetic methods, and typical applications. Opportunities and challenges in this field are also presented.

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“…In recent years, CNT‐based 3D architectures have received growing interest . Among them, low‐density and porous monoliths (aerogels) have shown great potential for wide application.…”

Section: Structures Properties and Macroscopic Assemblies Of Cntsmentioning

confidence: 99%

Macroscopic Carbon Nanotube‐based 3D Monoliths

Zhao

Zhang

et al. 2015

Small

View full text Add to dashboard Cite

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“…Although the bias potential (À0.1 V) of the three-electrode configuration were not completely equivalent to the real two-electrode configuration in DEFC, the data from the bias potential should be valid because they could represent the activity and durability of the catalysts [39]. Decay tendencies were observed in both of the catalysts for their current densities, which were attributed to the accumulation of poisonous intermediates on catalyst surfaces [40]. Furthermore, the slow reduction in the current density of the Pd/TiO 2 -MWCNTs catalyst confirmed that the Pd/TiO 2 -MWCNTs catalyst showed great resistance to poisoning.…”

Section: Stabilitymentioning

confidence: 95%

Electrocatalytic performance of Pd nanoparticles supported on TiO2-MWCNTs for methanol, ethanol, and isopropanol in alkaline media

Pan

Cui

et al. 2015

Journal of Electroanalytical Chemistry

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“…Acetylene gas with flow rate of 30 sccm was used as the carbon source. Hydrogen and argon gases are utilized as carrier with the flow rates of 140 and 100 sccm, respectively …”

Section: Methodsmentioning

confidence: 99%

High Capacitance and Cycle‐Life Performance of a Binder‐Free Supercapacitor Nanocomposite Electrode by Direct Growth of Manganese Oxide Nanostructures on Carbon Nanotubes

et al. 2017

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MnOx thin films with various oxidation states (MnO, Mn2O3, MnO2 and mixed MnO/Mn3O4) were directly grown onto carbon nanotubes by pulsed laser deposition under vacuum and at different oxygen partial pressures. The microstructural features of the as‐deposited thin films are characterized by scanning electron microscopy and X‐ray photoelectron spectroscopy. The electrochemical behavior of the CNT/MnOx nanocomposites in 1 M Na2SO4 electrolyte is discussed with regards to specific capacitance, and cycle‐life, by means of cyclic voltammetry and electrochemical impedance measurements. First, at slow potential scan rate of 1 mV s−1, MnOx prepared under vacuum and 10 mTorr of O2 delivered specific capacitance as high as 738 and 653 F g−1, respectively. Second, the rate capability of these two nanocomposites over a wide range of scan rates showed that at 500 mV s−1, the former retained 93 % whereas the later displayed an increase of 1.2 % with regards to their respective initial specific capacitance values at 1 mV s−1. They also maintained 90 % and 95 % of their specific capacitance after 10 000 continuous cycles with a 100 mV s−1 scan rate. The binder‐free nature of the CNT/MnOx nanocomposites and remarkable electrochemical properties suggest that these materials could find application as excellent electrodes for supercapacitors.

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3D hierarchical cauliflower-like carbon nanotubes/platinum–tin nanostructure and its electrocatalytic activity for ethanoloxidation

Cited by 30 publications

References 29 publications

Macroscopic Carbon Nanotube‐based 3D Monoliths

Macroscopic Carbon Nanotube‐based 3D Monoliths

Electrocatalytic performance of Pd nanoparticles supported on TiO2-MWCNTs for methanol, ethanol, and isopropanol in alkaline media

High Capacitance and Cycle‐Life Performance of a Binder‐Free Supercapacitor Nanocomposite Electrode by Direct Growth of Manganese Oxide Nanostructures on Carbon Nanotubes

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