Pristine carbon nanotubes as non-metal electrocatalysts for oxygen evolution reaction of water splitting

Cheng, Yi; Xu, Chen; Jia, Lichao; Gale, Julian D.; Zhang, Lili; Liu, Chang; Shen, Pei Kang; Jiang, San Ping

doi:10.1016/j.apcatb.2014.07.049

Cited by 134 publications

(56 citation statements)

References 42 publications

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“…[83] As shown in Figure 5 a,b, CNTs with 2-4 walls and outer diameters of around 2-5 nm have excellent activity, fast kinetics, and a much lower energy barrier for the OER compared to single-walled CNTs (SWCNTs) and MWCNTs (CNTs with 6/7 walls). For example, Cheng et al demonstrated that the electrocatalytic activities of pristine CNTs for the OER of water electrolysis in alkaline solutions showed a distinctive volcano-dependence on the size and/or the number of walls in the CNTs.…”

Section: The Effect Of Size Microstructure and Dopant Locationmentioning

confidence: 95%

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Carbon‐Based Metal‐Free Catalysts for Electrocatalysis beyond the ORR

2016

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Besides their use in fuel cells for energy conversion through the oxygen reduction reaction (ORR), carbon-based metal-free catalysts have also been demonstrated to be promising alternatives to noble-metal/metal oxide catalysts for the oxygen evolution reaction (OER) in metal-air batteries for energy storage and for the splitting of water to produce hydrogen fuels through the hydrogen evolution reaction (HER). This Review focuses on recent progress in the development of carbon-based metal-free catalysts for the OER and HER, along with challenges and perspectives in the emerging field of metal-free electrocatalysis.

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Section: The Effect Of Size Microstructure and Dopant Locationmentioning

confidence: 95%

“…The mass-specific activity was measured at 1.8 V at a scan rate of 1 mVs À1 and a rotating rate of 2000 rpm (reprinted from Ref [83]. b) Plots of the activity of CNTs for the OER in 1 m KOH solutions as a function of the number of walls.…”

mentioning

confidence: 99%

Carbon‐Based Metal‐Free Catalysts for Electrocatalysis beyond the ORR

2016

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“…Recently, the most excellent electrocatalysts for OER are noble metal oxides such as ruthenium and iridium oxides. However, the scarcity and expensive cost prohibit their commercial utilization [13,14].…”

Section: Introductionmentioning

confidence: 99%

A facile synthesis of reduced Co3O4 nanoparticles with enhanced Electrocatalytic activity for oxygen evolution

Liu

Han

et al. 2016

International Journal of Hydrogen Energy

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“…Because of their unique physical and chemical properties, carbon nanotubes (CNTs) are considered to be excellent candidates for many potential applications such as nanocomposite materials, nanoelectronics, catalysis and sensors [1][2][3][4][5][6][7][8][9][10]. Due to their great hardness and toughness, multiwall CNTs (MWCNTs) keep their morphology and structure even at high nanoparticle loadings [11].…”

Section: Introductionmentioning

confidence: 99%

The effect of concentration ratio and type of functional group on synthesis of CNT–ZnO hybrid nanomaterial by an in situ sol–gel process

Largani

Pasha

2016

Int Nano Lett

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In this research, MWCNT-ZnO hybrid nanomaterials were synthesized by a simple sol-gel process using Zn(CH 3 COO) 2 Á2H 2 O and functionalized MWCNT with carboxyl(COOH) and hydroxyl(OH) groups. Three different mass ratios of MWCNT:ZnO = 3:1, 1:1 and 1:3 were examined. The prepared nanomaterials were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX) and Fourier transform infrared spectroscopy (FTIR). Successful growth of MWCNT-ZnO hybrids for both COOH and OH functional groups and all the three mass ratios were obtained. The ZnO nanoparticles attached on the surfaces of CNTs have rather spherical shapes and hexagonal crystal structure. By increasing the concentration of ZnO, the number and average size of ZnO nanoparticles decorated the body of CNTs in hybrid structures increase. By increasing the ZnO precursor, the distribution of ZnO nanoparticles that appeared on the surface of CNTs becomes more uniform. The SEM observation beside EDX analysis revealed that at the same concentration ratio the amount of ZnO loading on the surface of MWCNT-COOH is more than MWCNT-OH. Moreover, the average size of ZnO nanoparticles attached on the surface of COOH functionalized CNTs is relatively smaller than that of OH functionalized ones.

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Pristine carbon nanotubes as non-metal electrocatalysts for oxygen evolution reaction of water splitting

Cited by 134 publications

References 42 publications

Carbon‐Based Metal‐Free Catalysts for Electrocatalysis beyond the ORR

Carbon‐Based Metal‐Free Catalysts for Electrocatalysis beyond the ORR

A facile synthesis of reduced Co3O4 nanoparticles with enhanced Electrocatalytic activity for oxygen evolution

The effect of concentration ratio and type of functional group on synthesis of CNT–ZnO hybrid nanomaterial by an in situ sol–gel process

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