Laser‐Induced Pyridinic‐Nitrogen‐Rich Defective Carbon Nanotubes for Efficient Oxygen Electrocatalysis

ChemCatChem ◽  
2019 ◽  
Vol 11 (24) ◽  
pp. 6131-6138 ◽  
Author(s):  
Yuehui Yin ◽  
Xuechun Sun ◽  
Miao Zhou ◽  
Xueru Zhao ◽  
Jiayi Qin ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Pyridinic Nitrogen

Carbon nanotubes with rich pyridinic nitrogen for gas phase CO2 electroreduction

2019 ◽  
Vol 250 ◽  
pp. 347-354 ◽  
Author(s):  
Chen Ma ◽  
Pengfei Hou ◽  
Xiuping Wang ◽  
Zhuo Wang ◽  
Wenting Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Gas Phase ◽  
Co2 Electroreduction ◽  
Pyridinic Nitrogen

Green Functionalization and Supercapacitive Properties of Carbon Nanotubes by Atmospheric Pressure Non-Thermal Plasma Treatment

2017 ◽  
Vol 20 (3) ◽  
pp. 095-100
Author(s):  
Zhihong Luo ◽  
Min Zhu ◽  
Yuzhen Zhao ◽  
Kun Luo
Keyword(s):  
Carbon Nanotubes ◽  
Plasma Treatment ◽  
Thermal Plasma ◽  
Atmospheric Pressure ◽  
Nitrogen Sources ◽  
Supercapacitive Performance ◽  
Pristine Cnts ◽  
Non Thermal Plasma ◽  
Functionalization Of Carbon Nanotubes ◽  
Pyridinic Nitrogen

Functionalization of carbon nanotubes proceeds by using atmospheric pressure non-thermal plasma treatment, where NH3 is used as nitrogen sources which is excited either by alternating currents (AC) or direct currents (DC). The content and species of the functional groups are analyzed by XPS which displays that heteroatom content increases 1.6 at.%, the main nitrogen groups are pyridinic nitrogen (N-6) and amino (-NH2), and HO-C=O, C=O and C-OH surface groups are also incorporated. The supercapacitive performance of the pristine CNTs, CNT-DC and CNT-AC electrodes are measured and the specific capacitance of CNTs is increased after plasma treatment, which indicate that the surface functionalization facilitate the improvement on supercapacitive properties.

Electrocatalytically Switchable CO2Capture: First Principle Computational Exploration of Carbon Nanotubes with Pyridinic Nitrogen

ChemSusChem ◽  
2014 ◽  
Vol 7 (2) ◽  
pp. 435-441 ◽  
Author(s):  
Yan Jiao ◽  
Yao Zheng ◽  
Sean C. Smith ◽  
Aijun Du ◽  
Zhonghua Zhu
Keyword(s):  
Carbon Nanotubes ◽  
First Principle ◽  
Computational Exploration ◽  
Pyridinic Nitrogen

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

Energies ◽  
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.

Graphitic and pyridinic nitrogen in carbon nanotubes: energetic and polarization aspects

2015 ◽  
Vol 10 (1) ◽  
pp. 012510 ◽  
Author(s):  
Olga V. Sedelnikova ◽  
Lyubov G. Bulusheva ◽  
Alexander V. Okotrub
Keyword(s):  
Carbon Nanotubes ◽  
Pyridinic Nitrogen

scholarly journals Electrocatalytically Switchable CO2Capture: First Principle Computational Exploration of Carbon Nanotubes with Pyridinic Nitrogen

ChemSusChem ◽  
2014 ◽  
Vol 7 (2) ◽  
pp. 317-317
Author(s):  
Yan Jiao ◽  
Yao Zheng ◽  
Sean C. Smith ◽  
Aijun Du ◽  
Zhonghua Zhu
Keyword(s):  
Carbon Nanotubes ◽  
First Principle ◽  
Computational Exploration ◽  
Pyridinic Nitrogen

Structural phenomena in the growth of carbon nanotubes

1993 ◽  
Vol 51 ◽  
pp. 750-751
Author(s):  
Jun Jiao
Keyword(s):  
Carbon Nanotubes ◽  
Growth Mechanism ◽  
Carbonaceous Material ◽  
Cluster Growth ◽  
Structural Elements ◽  
Rich Variety ◽  
Different Shapes ◽  
Point To Point

HREM studies of the carbonaceous material deposited on the cathode of a Huffman-Krätschmer arc reactor have shown a rich variety of multiple-walled nano-clusters of different shapes and forms. The preparation of the samples, as well as the variety of cluster shapes, including triangular, rhombohedral and pentagonal projections, are described elsewhere.The close registry imposed on the nanotubes, focuses attention on the cluster growth mechanism. The strict parallelism in the graphitic separation of the tube walls is maintained through changes of form and size, often leading to 180° turns, and accommodating neighboring clusters and defects. Iijima et. al. have proposed a growth scheme in terms of pentagonal and heptagonal defects and their combinations in a hexagonal graphitic matrix, the first bending the surface inward, and the second outward. We report here HREM observations that support Iijima’s suggestions, and add some new features that refine the interpretation of the growth mechanism. The structural elements of our observations are briefly summarized in the following four micrographs, taken in a Hitachi H-8100 TEM operating at an accelerating voltage of 200 kV and with a point-to-point resolution of 0.20 nm.

Sign in / Sign up

Export Citation Format

Share Document