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C, Volume 7, Issue 1

March 2021 - 29 articles

Cover Story: Doping diamond with boron, nitrogen or phosphorus enables a fine tuning of its electronic properties, which is particularly relevant for applications involving electron emission. However, the chemical nature of the doping sites and its correlation with electron emission properties remains to be clarified. In this work, we applied soft X-ray spectroscopy techniques to probe occupied and unoccupied electronic states in undoped, boron-, phosphorus-, and nitrogen-containing single crystal diamonds. X-ray absorption, X-ray emission, and X-ray photoemission spectroscopies, performed at the carbon K-edge, provide a full picture of new electronic states created by impurities in diamond. The different probing depth of fluorescence- and electron-based detection techniques enables a comparison between surface and bulk contributions. View this paper.
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Articles (29)

  • Article
  • Open Access
13 Citations
5,646 Views
13 Pages

Carbide-Derived Carbons: WAXS and Raman Spectra for Detailed Structural Analysis

  • Riinu Härmas,
  • Rasmus Palm,
  • Heisi Kurig,
  • Laura Puusepp,
  • Torben Pfaff,
  • Tavo Romann,
  • Jaan Aruväli,
  • Indrek Tallo,
  • Thomas Thomberg and
  • Alar Jänes
  • + 1 author

20 March 2021

Quick characterization methods to determine the structure of carbon materials are sought after for a wide array of technical applications. In this study we present the combined analysis of the structure of carbide-derived carbons (CDCs) with Raman sp...

  • Article
  • Open Access
6 Citations
5,476 Views
10 Pages

Impact of Nitrogen, Boron and Phosphorus Impurities on the Electronic Structure of Diamond Probed by X-ray Spectroscopies

  • Sneha Choudhury,
  • Ronny Golnak,
  • Christian Schulz,
  • Klaus Lieutenant,
  • Nicolas Tranchant,
  • Jean-Charles Arnault,
  • Marie-Amandine Pinault-Thaury,
  • François Jomard,
  • Peter Knittel and
  • Tristan Petit

9 March 2021

Doping diamond with boron, nitrogen or phosphorus enables a fine tuning of its electronic properties, which is particularly relevant for applications involving electron emission. However, the chemical nature of the doping sites and its correlation wi...

  • Article
  • Open Access
10 Citations
3,678 Views
15 Pages

The Role of Surface Chemistry and Polyethylenimine Grafting in the Removal of Cr (VI) by Activated Carbons from Cashew Nut Shells

  • Victoria A. Smith,
  • Juster F. A. Rivera,
  • Ruby Bello,
  • Elena Rodríguez-Aguado,
  • Mohammed R. Elshaer,
  • Rebecca L. Wodzinski and
  • Svetlana Bashkova

27 February 2021

Activated carbons prepared from cashew nut shells and modified by grafting polyethylenimine onto the surface were tested for removal of Cr (VI). The removal efficiency of carbons without and with polyethylenimine decreased with an increase in pH, wit...

  • Article
  • Open Access
6 Citations
2,985 Views
8 Pages

25 February 2021

We explore the quantum capacitance, stability, and electronic properties of single-walled carbon nanotubes decorated with B12 icosahedral boron clusters by first-principle calculation methods implemented in the SIESTA code. After the optimization of...

  • Article
  • Open Access
26 Citations
8,635 Views
15 Pages

Selection of Mixed Amines in the CO2 Capture Process

  • Pao-Chi Chen,
  • Hsun-Huang Cho,
  • Jyun-Hong Jhuang and
  • Cheng-Hao Ku

24 February 2021

In order to select the best mixed amines in the CO2 capture process, the absorption of CO2 in mixed amines was explored at the required concentrations by using monoethanolamine (MEA) as a basic solvent, mixed with diisopropanolamine (DIPA), triethano...

  • Article
  • Open Access
6 Citations
2,832 Views
8 Pages

Removal of Lead by Oxidized Graphite

  • Namasivayam Selvanantharajah,
  • Poobalasuntharam Iyngaran,
  • Poobalasingam Abiman and
  • Navaratnarajah Kuganathan

20 February 2021

Lead ion adsorption on the surfaces of pristine and oxidized graphite is studied quantitatively using X-ray photoelectron spectroscopy (XPS) and standard electrochemical measurements. The XPS analysis confirmed the oxidation of graphite, yielding a f...

  • Feature Paper
  • Article
  • Open Access
5 Citations
3,575 Views
14 Pages

Anisotropic Magnetism in Gradient Porous Carbon Composite Aerogels

  • Jochen Bahner,
  • Nicolas Hug and
  • Sebastian Polarz

13 February 2021

Porosity is of high importance for functional materials, as it allows for high surface areas and the accessibility of materials. While the fundamental interplay between different pore sizes and functionalities is quite well understood, few studies on...

  • Feature Paper
  • Article
  • Open Access
6 Citations
3,405 Views
12 Pages

12 February 2021

This manuscript is focused on the relationship between sol-gel synthesis processes and the development of new active phases with fitted morphology, porosity and surface chemistry. The influence of the above parameters on the catalytic performance of...

  • Review
  • Open Access
24 Citations
8,209 Views
23 Pages

Preparation and Applications of Fluorinated Graphenes

  • Yasser Ahmad,
  • Nicolas Batisse,
  • Xianjue Chen and
  • Marc Dubois

7 February 2021

The present review focuses on the numerous routes for the preparation of fluorinated graphene (FG) according to the starting materials. Two strategies are considered: (i) addition of fluorine atoms on graphenes of various nature and quality and (ii)...

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C - ISSN 2311-5629