Effect of Cu on Ni nanoparticles used for the generation of carbon nanotubes by catalytic cracking of methane

It is important for regenerative fuel cells, rechargeable metal–air batteries and water splitting to find reasonable designed nonprecious metal catalysts, which have efficient and durable electrocatalytic activities for oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). In this work, through a simple hydrothermal method and following annealing process, Mo2C and Ni nanoparticles were encapsulated in a nanoporous hierarchical structure of carbon (Ni/Mo2C/C). The ingenious structure delivers several favorable characteristics including abundant active sites resulting from hollow and mesoporous architecture, boosted reaction kinetics from metallic components, sufficient interfacial effect and synergistic effect from intimate integration of Mo2C, Ni and C. The multifunctional Ni/Mo2C/C hybrid electrocatalyst performs excellently for ORR, OER and HER, better than most of the reported electrocatalysts with three functions. A facile and novel strategy was developed to construct the multifunctional catalysts with excellent electrocatalysis behavior.

Download Full-text

Ni/phosphomolybdic acid immobilized on carbon nanotubes for catalytic cracking of Jatropha oil

Chemical Physics Letters ◽

10.1016/j.cplett.2019.02.008 ◽

2019 ◽

Vol 720 ◽

pp. 42-51 ◽

Cited By ~ 4

Author(s):

Xiaosong Yang ◽

Xiaoming Li ◽

Jing Liu ◽

Long Rong

Keyword(s):

Carbon Nanotubes ◽

Catalytic Cracking ◽

Phosphomolybdic Acid ◽

Jatropha Oil

Download Full-text

Magnetic properties and transmission electron microscopy studies of Ni nanoparticles encapsulated in carbon nanocages and carbon nanotubes

Materials Research Bulletin ◽

10.1016/j.materresbull.2007.08.015 ◽

2008 ◽

Vol 43 (8-9) ◽

pp. 2260-2265 ◽

Cited By ~ 20

Author(s):

Chunnian He ◽

Naiqin Zhao ◽

Chunsheng Shi ◽

Jiajun Li ◽

Haipeng Li

Keyword(s):

Electron Microscopy ◽

Carbon Nanotubes ◽

Transmission Electron Microscopy ◽

Magnetic Properties ◽

Ni Nanoparticles ◽

Transmission Electron

Download Full-text

Direct conversion of nickel stearate into carbon nanotubes or pure-phase metallic Ni nanoparticles encapsulated in polyhedral graphite cages

Journal of Materials Chemistry ◽

10.1039/b410048d ◽

2005 ◽

Vol 15 (8) ◽

pp. 844 ◽

Cited By ~ 16

Author(s):

Junfeng Geng ◽

David Jefferson ◽

Brian F. G. Johnson

Keyword(s):

Carbon Nanotubes ◽

Direct Conversion ◽

Ni Nanoparticles ◽

Pure Phase

Download Full-text

Confined Growth of Carbon Nanotubes in Nanocutting Channel on Highly Oriented Pyrolytic Graphite

NANO ◽

10.1142/s1793292018500716 ◽

2018 ◽

Vol 13 (06) ◽

pp. 1850071

Author(s):

Yuan Sang ◽

Chuanhong Jin ◽

Muhammed Habib ◽

Li Song

Keyword(s):

Carbon Nanotubes ◽

Pyrolytic Graphite ◽

Metal Particles ◽

High Symmetry ◽

Ni Nanoparticles ◽

Highly Oriented Pyrolytic Graphite ◽

Controllable Synthesis ◽

Confined Growth ◽

Synthesis Of Carbon Nanotubes ◽

Graphene Edge

Graphite surface can be etched by metal particles because of the catalytic hydrogenation, resulting in unique etching channels along crystallographic high-symmetry directions that provide new possibilities for confinement applications. Herein, we demonstrate a confined growth carbon nanotubes (CNT) inside nanocutting channels on the surface of highly oriented pyrolytic graphite (HOPG). In particular, nickel (Ni) nanoparticles were used as catalytic knife to cut HPOG for creating channels with both zig-zag and armchair graphene edge types. Subsequently, multiwall CNTs were grown along the edge inside channels by reacting Ni nanoparticles catalyzing. It was found that the CNTs inside channels could be grown together along same orientation instead of aggregation, which may bring out a new idea on the controllable synthesis of carbon nanotubes.

Download Full-text