Wake effect in doped graphene due to moving external charge

2011 ◽  
Vol 375 (42) ◽  
pp. 3720-3725 ◽  
Author(s):  
Ivan Radović ◽  
Duško Borka ◽  
Zoran L. Mišković
Keyword(s):  
Wake Effect ◽  
Doped Graphene ◽  
External Charge

scholarly journals Nonlinear screening of external charge by doped graphene

2010 ◽  
Vol 81 (8) ◽  
Author(s):  
M. Ghaznavi ◽  
Z. L. Mišković ◽  
F. O. Goodman
Keyword(s):  
Doped Graphene ◽  
External Charge

Wake effect in interactions of dipolar molecules with doped graphene

2013 ◽  
Vol 377 (38) ◽  
pp. 2614-2620 ◽  
Author(s):  
Ivan Radović ◽  
Duško Borka ◽  
Zoran L. Mišković
Keyword(s):  
Wake Effect ◽  
Dipolar Molecules ◽  
Doped Graphene

Making Graphene-type Material via Polymerization of Porphyrin

2020 ◽  
Author(s):  
SANJIB KAR ◽  
Sruti Mondal ◽  
Kasturi Sahu ◽  
Dilruba Hasina ◽  
Tapobrata Som ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Polymeric Material ◽  
Single Layer ◽  
Type Material ◽  
Synthetic Pathway ◽  
Simple Chemical ◽  
Doped Graphene ◽  
Ring Nitrogen ◽  
2D Structure ◽  
Porphyrin Macrocycles

<p>The synthesis of new graphene-type materials (<i>via</i> polymerization of porphyrin macrocycles) through a simple chemical synthetic pathway (at RT) has been demonstrated. This newly synthesized material can be dispersed in water with an average sheet size of few microns and with single layer thickness. As the porphyrin contains four inner ring nitrogen atoms thus the presented polymeric material will be close analogous of N-doped graphene. Porphyrin as the key component to synthesize layered graphene type continuous 2D structure has never been attempted before. </p> <p> </p>

Single–atom manganese and nitrogen co-doped graphene as low-cost catalysts for the efficient CO oxidation at room temperature

2021 ◽  
Vol 536 ◽  
pp. 147809
Author(s):  
Mingming Luo ◽  
Zhao Liang ◽  
Chao Liu ◽  
Xiaopeng Qi ◽  
Mingwei Chen ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Room Temperature ◽  
Low Cost ◽  
Single Atom ◽  
Doped Graphene ◽  
Co Doped

scholarly journals Robust Carbon-Stabilization of Few-Layer Black Phosphorus for Superior Oxygen Evolution Reaction

Coatings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 695 ◽  
Author(s):  
Mengjie Zhang ◽  
Wenchang Zhu ◽  
Xingzhe Yang ◽  
Meng Feng ◽  
Hongbin Feng
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Black Phosphorus ◽  
Carbon Stabilization ◽  
High Durability ◽  
Carbon Coated ◽  
Alkaline Conditions ◽  
Doped Graphene ◽  
A Current

Few-layer exfoliated black phosphorus (Ex-BP) has attracted tremendous attention owing to its promising applications, including in electrocatalysis. However, it remains a challenge to directly use few-layer Ex-BP as oxygen-involved electrocatalyst because it is quite difficult to restrain structural degradation caused by spontaneous oxidation and keep it stable. Here, a robust carbon-stabilization strategy has been implemented to prepare carbon-coated Ex-BP/N-doped graphene nanosheet (Ex-BP/NGS@C) nanostructures at room temperature, which exhibit superior oxygen evolution reaction (OER) activity under alkaline conditions. Specifically, the as-synthesized Ex-BP/NGS@C hybrid presents a low overpotential of 257 mV at a current density of 10 mA cm−2 with a small Tafel slope of 52 mV dec−1 and shows high durability after long-term testing.

scholarly journals Nitrogen-Doped Graphene Iron-Based Particle Electrode Outperforms Activated Carbon in Three-Dimensional Electrochemical Water Treatment Systems

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3121
Author(s):  
Hosna Ghanbarlou ◽  
Nikoline Loklindt Pedersen ◽  
Morten Enggrob Simonsen ◽  
Jens Muff
Keyword(s):  
Activated Carbon ◽  
Three Dimensional ◽  
Cell Voltage ◽  
Reduction Reaction ◽  
Process Data ◽  
Nitrogen Doped ◽  
Pesticide Removal ◽  
Optimal Value ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

The synergy between electrochemical oxidation and adsorption on particle electrodes was investigated in three-dimensional (3D) systems for p-nitrosodimethylaniline (RNO) decolorization and pesticide removal. A comparison was made between granular activated carbon (GAC) and a novel synthesized nitrogen-doped graphene-based particle electrode (NCPE). Experiments on RNO decolorization show that the synergy parameter of the 3D-NCPE system was improved 3000 times compared to the studied 3D-GAC system. This was due to the specific nanostructure and composition of the NCPE material. Nitrogen-doped graphene triggered an oxygen reduction reaction, producing hydrogen peroxide that simultaneously catalyzed on iron sites of the NCPEs to hydroxyl radicals following the electro-Fenton (EF) process. Data showed that in the experimental setup used for the study, the applied cell voltage required for the optimal value of the synergy parameter could be lowered to 5V in the 3D-NCPEs process, which is significantly better than the 15–20 V needed for synergy to be found in the 3D-GAC process. Compared to previous studies with 3D-GAC, the removal of pesticides 2,6 dichlorobenzamide (BAM), 2-methyl-4-chlorophenoxyaceticacid (MCPA), and methylchlorophenoxypropionic acid (MCPP) was also enhanced in the 3D-NCPE system.

scholarly journals N-doped graphene foam obtained by microwave-assisted exfoliation of graphite

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Malgorzata Skorupska ◽  
Anna Ilnicka ◽  
Jerzy P. Lukaszewicz
Keyword(s):  
Electron Microscopy ◽  
Electrode Materials ◽  
Elemental Content ◽  
Research Approach ◽  
Pristine Graphene ◽  
Active Electrode ◽  
Graphene Foam ◽  
Practical Applications ◽  
Microwave Reactor ◽  
Doped Graphene

AbstractThe synthesis of metal-free but electrochemically active electrode materials, which could be an important contributor to environmental protection, is the key motivation for this research approach. The progress of graphene material science in recent decades has contributed to the further development of nanotechnology and material engineering. Due to the unique properties of graphene materials, they have found many practical applications: among others, as catalysts in metal-air batteries, supercapacitors, or fuel cells. In order to create an economical and efficient material for energy production and storage applications, researchers focused on the introduction of additional heteroatoms to the graphene structure. As solutions for functionalizing pristine graphene structures are very difficult to implement, this article presents a facile method of preparing nitrogen-doped graphene foam in a microwave reactor. The influence of solvent type and microwave reactor holding time was investigated. To characterize the elemental content and structural properties of the obtained N-doped graphene materials, methods such as elemental analysis, high-resolution transmission electron microscopy, scanning electron microscopy, and Raman spectroscopy were used. Electrochemical activity in ORR of the obtained materials was tested using cyclic voltamperometry (CV) and linear sweep voltamperometry (LSV). The tests proved the materials’ high activity towards ORR, with the number of electrons reaching 3.46 for tested non-Pt materials, while the analogous value for the C-Pt (20 wt% loading) reference was 4.

scholarly journals CoMn phosphide encapsulated in nitrogen-doped graphene for electrocatalytic hydrogen evolution over a broad pH range

2021 ◽  
Author(s):  
Jingjing Liu ◽  
Wenyao Li ◽  
Zhe Cui ◽  
Jiaojiao Li ◽  
Fang Yang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Core Shell ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Ph Range ◽  
Excellent Stability

A core–shell CoMn-P@NG heterostructure electrode demonstrated impressive performance of hydrogen evolution over a broad pH range and maintained excellent stability.

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