A composite consisting of intermetallic Ni3Fe and nitrogen-doped carbon for electrocatalytic water oxidation: The effect of increased pyridinic nitrogen dopant

Linker-free spontaneous binding of Co4POMs on NCNTs are presented via electrostatic hybridization for efficient water oxidation at neutral pH. Co4POM/NCNT hybrids exhibited outstanding catalytic activities for water oxidation under neutral conditions.

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Nitrogen-Doped Carbon Dots/TiO2 Nanoparticle Composites for Photoelectrochemical Water Oxidation

ACS Applied Nano Materials ◽

10.1021/acsanm.9b02412 ◽

2020 ◽

Vol 3 (4) ◽

pp. 3371-3381 ◽

Cited By ~ 6

Author(s):

Hui Luo ◽

Stoichko Dimitrov ◽

Matyas Daboczi ◽

Ji-Seon Kim ◽

Qian Guo ◽

...

Keyword(s):

Water Oxidation ◽

Carbon Dots ◽

Tio2 Nanoparticle ◽

Nitrogen Doped ◽

Doped Carbon Dots ◽

Nitrogen Doped Carbon ◽

Nanoparticle Composites ◽

Photoelectrochemical Water Oxidation

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Nitrogen Doped Carbon Nanotubes and Nanofibers for Green Hydrogen Production: Similarities in the Nature of Nitrogen Species, Metal–Nitrogen Interaction, and Catalytic Properties

Energies ◽

10.3390/en12203976 ◽

2019 ◽

Vol 12 (20) ◽

pp. 3976

Author(s):

Olga Podyacheva ◽

Alexander Lisitsyn ◽

Lidiya Kibis ◽

Andrei Boronin ◽

Olga Stonkus ◽

...

Keyword(s):

Carbon Nanotubes ◽

Hydrogen Production ◽

Catalytic Properties ◽

Catalyst Support ◽

Nitrogen Doped ◽

Supported Platinum ◽

Formic Acid Decomposition ◽

Type Interaction ◽

Nitrogen Doped Carbon ◽

Pyridinic Nitrogen

The effect of nitrogen doped bamboo-like carbon nanotubes (N–CNTs) on the properties of supported platinum (0.2 and 1 wt %) catalysts in formic acid decomposition for hydrogen production was studied. It was shown that both impregnation and homogeneous precipitation routes led to the formation of electron-deficient platinum stabilized by pyridinic nitrogen sites of the N–CNTs. The electron-deficient platinum species strongly enhanced the activity and selectivity of the Pt/N–CNTs catalysts when compared to the catalysts containing mainly metallic platinum nanoparticles. A comparison of bamboo-like N–CNTs and herring-bone nitrogen doped carbon nanofibers (N–CNFs) as the catalyst support allowed us to conclude that the catalytic properties of supported platinum are determined by its locally one-type interaction with pyridinic nitrogen sites of the N–CNTs or N–CNFs irrespective of substantial structural differences between nanotubes and nanofibers.

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Facile Synthesis of Copper Oxide-Cobalt Oxide/Nitrogen-Doped Carbon (Cu2O-Co3O4/CN) Composite for Efficient Water Splitting

Applied Sciences ◽

10.3390/app11219974 ◽

2021 ◽

Vol 11 (21) ◽

pp. 9974

Author(s):

Zaffar Ahmed Shaikh ◽

Nikita Moiseev ◽

Alexey Mikhaylov ◽

Serhat Yüksel

Keyword(s):

Copper Oxide ◽

Cobalt Oxide ◽

Water Splitting ◽

Water Oxidation ◽

Linear Sweep Voltammetry ◽

Electrochemical Catalysis ◽

Onset Potential ◽

Nitrogen Doped ◽

Electrochemical Water Splitting ◽

Nitrogen Doped Carbon

Herein, we report a copper oxide-cobalt oxide/nitrogen-doped carbon hybrid (Cu2O-Co3O4/CN) composite for electrochemical water splitting. Cu2O-Co3O4/CN is synthesized by an easy two-step reaction of melamine with Cu2O-Co3O4/CN composite. The designed composite is aimed to solve energy challenges by producing hydrogen and oxygen via electrochemical catalysis. The proposed composite offers some unique advantages in water splitting. Carbon imparts superior conductivity, while the water oxidation abilities of Cu2O and Co3O4 are considered to constitute a catalyst. The synthesized composite (Cu2O-Co3O4/CN) is characterized by SEM, EDS, FTIR, TEM, and AFM in terms of the size, morphology, shape, and elemental composition of the catalyst. The designed catalyst’s electrochemical performance is evaluated via linear sweep voltammetry (LSV) and cyclic voltammetry (CV). The Cu2O-Co3O4/CN composite shows significant electrocatalytic activity, which is further improved by introducing nitrogen doped carbon (current density 10 mA cm−2, onset potential 91 mV, and overpotential 396 mV).

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