Graphitic Carbon Nanomaterials for Multifunctional Nanocomposites

2013 ◽  
pp. 91-112
Keyword(s):  
Carbon Nanomaterials ◽  
Graphitic Carbon ◽  
Multifunctional Nanocomposites

Strategies to improve the photocatalytic activity of TiO2: 3D nanostructuring and heterostructuring with graphitic carbon nanomaterials

Nanoscale ◽  
2019 ◽  
Vol 11 (15) ◽  
pp. 7025-7040 ◽  
Author(s):  
Kisung Lee ◽  
Hyewon Yoon ◽  
Changui Ahn ◽  
Junyong Park ◽  
Seokwoo Jeon
Keyword(s):  
Photocatalytic Activity ◽  
Structural Design ◽  
Recent Progress ◽  
Carbon Nanomaterials ◽  
Graphitic Carbon

Recent progress on structural design of TiO2 photocatalyst based on monolithic nanostructuring and heterostructuring with graphitic carbon nanomaterials.

scholarly journals X-ray photoelectron spectroscopy of graphitic carbon nanomaterials doped with heteroatoms

2015 ◽  
Vol 6 ◽  
pp. 177-192 ◽  
Author(s):  
Toma Susi ◽  
Thomas Pichler ◽  
Paola Ayala
Keyword(s):  
Photoelectron Spectroscopy ◽  
Carbon Nanomaterials ◽  
Compositional Analysis ◽  
Binding Energies ◽  
Graphitic Carbon ◽  
Photoelectron Spectra ◽  
Intrinsic Properties ◽  
Important Work ◽  
X Ray ◽  
General Care

X-ray photoelectron spectroscopy (XPS) is one of the best tools for studying the chemical modification of surfaces, and in particular the distribution and bonding of heteroatom dopants in carbon nanomaterials such as graphene and carbon nanotubes. Although these materials have superb intrinsic properties, these often need to be modified in a controlled way for specific applications. Towards this aim, the most studied dopants are neighbors to carbon in the periodic table, nitrogen and boron, with phosphorus starting to emerge as an interesting new alternative. Hundreds of studies have used XPS for analyzing the concentration and bonding of dopants in various materials. Although the majority of works has concentrated on nitrogen, important work is still ongoing to identify its precise atomic bonding configurations. In general, care should be taken in the preparation of a suitable sample, consideration of the intrinsic photoemission response of the material in question, and the appropriate spectral analysis. If this is not the case, incorrect conclusions can easily be drawn, especially in the assignment of measured binding energies into specific atomic configurations. Starting from the characteristics of pristine materials, this review provides a practical guide for interpreting X-ray photoelectron spectra of doped graphitic carbon nanomaterials, and a reference for their binding energies that are vital for compositional analysis via XPS.

A Bottom-Up Approach to Solution-Processed, Atomically Precise Graphitic Cylinders on Surfaces

2018 ◽  
Author(s):  
Erik Leonhardt ◽  
Jeff M. Van Raden ◽  
David Miller ◽  
Lev N. Zakharov ◽  
Benjamin Aleman ◽  
...  
Keyword(s):  
Self Assembly ◽  
Carbon Nanostructures ◽  
Carbon Nanomaterials ◽  
Circle Packing ◽  
Pyrolytic Graphite ◽  
Building Blocks ◽  
Bottom Up ◽  
Casting Technique ◽  
New Class ◽  
Solution Casting Technique

Extended carbon nanostructures, such as carbon nanotubes (CNTs), exhibit remarkable properties but are difficult to synthesize uniformly. Herein, we present a new class of carbon nanomaterials constructed via the bottom-up self-assembly of cylindrical, atomically-precise small molecules. Guided by supramolecular design principles and circle packing theory, we have designed and synthesized a fluorinated nanohoop that, in the solid-state, self-assembles into nanotube-like arrays with channel diameters of precisely 1.63 nm. A mild solution-casting technique is then used to construct vertical “forests” of these arrays on a highly-ordered pyrolytic graphite (HOPG) surface through epitaxial growth. Furthermore, we show that a basic property of nanohoops, fluorescence, is readily transferred to the bulk phase, implying that the properties of these materials can be directly altered via precise functionalization of their nanohoop building blocks. The strategy presented is expected to have broader applications in the development of new graphitic nanomaterials with π-rich cavities reminiscent of CNTs.

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