[HTML][HTML] C sp2/sp3 hybridisations in carbon nanomaterials–XPS and (X) AES study

B Lesiak, L Kövér, J Tóth, J Zemek, P Jiricek… - Applied Surface …, 2018 - Elsevier
Shape of the C KLL (KVV) Auger spectrum provides a measure of C sp 2/sp 3 hybridisations,
alternative to C 1s spectra fitting. Due to a smaller kinetic energy of C KLL electrons than C …

Unveiling bonding states and roles of edges in nitrogen-doped graphene nanoribbon by X-ray photoelectron spectroscopy

Y Yamada, H Tanaka, S Kubo, S Sato - Carbon, 2021 - Elsevier
X-ray photoelectron spectroscopy (XPS) is among the most utilized analytical methods for
nitrogen-doped carbon materials. Clarifying the assignments of nitrogen-doped carbon …

Origins of sp3C peaks in C1s X-ray Photoelectron Spectra of Carbon Materials

A Fujimoto, Y Yamada, M Koinuma, S Sato - Analytical chemistry, 2016 - ACS Publications
X-ray photoelectron spectroscopy (XPS) is among the most powerful techniques to analyze
defective structures of carbon materials such as graphene and activated carbon. However …

Origins of peaks of graphitic and pyrrolic nitrogen in N1s X-ray photoelectron spectra of carbon materials: quaternary nitrogen, tertiary amine, or secondary amine?

T Kato, Y Yamada, Y Nishikawa, T Otomo… - Journal of Materials …, 2021 - Springer
X-ray photoelectron spectroscopy (XPS) is among the most powerful techniques to analyse
structures of nitrogen-doped carbon materials. However, reported assignments of (1) …

A comparative study on defect estimation using XPS and Raman spectroscopy in few layer nanographitic structures

K Ganesan, S Ghosh, NG Krishna, S Ilango… - Physical Chemistry …, 2016 - pubs.rsc.org
Defects in planar and vertically oriented nanographitic structures (NGSs) synthesized by
plasma enhanced chemical vapor deposition (PECVD) have been investigated using …

Hole-matrixed carbonylated graphene: Synthesis, properties, and highly-selective ammonia gas sensing

MK Rabchinskii, AS Varezhnikov, VV Sysoev… - Carbon, 2021 - Elsevier
Here, the synthesis of holey carbonylated (C-ny) graphene derivative and its application for
gas sensing is demonstrated. The carbonylation of graphene oxide leads to the 3-fold …

Synthesis and characterization of a large-quantity of functionalized graphene from graphite by a facile bubble-exfoliation method

A Gholizadeh, A Babaei, MH Abdolrasouli - Nano-Structures & Nano …, 2023 - Elsevier
In this work, functionalized graphene (FG) was synthesized based on an improved bubble-
exfoliation method from cheap defective graphite. By using the improved method, we …

Distinguishing zigzag and armchair edges on graphene nanoribbons by X-ray photoelectron and Raman spectroscopies

J Kim, N Lee, YH Min, S Noh, NK Kim, S Jung… - ACS …, 2018 - ACS Publications
Graphene nanoribbons (GNRs) have recently emerged as alternative 2D semiconductors
owing to their fascinating electronic properties that include tunable band gaps and high …

Toward strategical bottom-up synthesis of carbon materials with exceptionally high pyridinic-nitrogen content: development of screening techniques

Y Yamada, H Tanaka, Y Tanaka, S Kubo, T Taguchi… - Carbon, 2022 - Elsevier
Selective doping of nitrogen-containing functional groups of carbon materials is the most
essential technique for enhancing properties significantly for various applications such as …

Bottom-up synthesis of pyridinic nitrogen-containing carbon materials with C–H groups next to pyridinic nitrogen from two-ring aromatics

N Ohtsubo, S Gohda, K Gotoh, S Sato, Y Yamada - Carbon, 2023 - Elsevier
Carbon materials containing pyridinic nitrogen are expected to be effective for electrodes
and catalysts. However, it is challenging to selectively and simultaneously introduce both …