Carbon and nitrogen 1s energy levels in amorphous carbon nitride systems: XPS interpretation using first-principles

Titantah, J. T.; Lamoen, D.

doi:10.1016/j.diamond.2006.11.048

Cited by 140 publications

(89 citation statements)

References 41 publications

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“…[20]), ando ne peak around 286 eV,w hich is attributed to C sp 2 bondedt oN(285-287a ccording to Ref. [20]), confirming Na nd Od oping of graphene. The other peaks at 289 and 290 eV are attributed to C sp 2 bonded to O.…”

supporting

confidence: 53%

“…All the (N, O)graphene samples [(N, O; 7, 15 %)graphene, (N, O; 5, 13 %)graphene, (N 1, 9%)graphene; where (N, O; x, y %)graphene represents (N, O)-co-dopedg raphene containing x %Nand y %O ]p resent ap eak at 284.7 eV, which is attributed to graphitic C sp 2 (284-285eVa ccording to Ref. [20]), ando ne peak around 286 eV,w hich is attributed to C sp 2 bondedt oN(285-287a ccording to Ref. [20]), confirming Na nd Od oping of graphene.…”

mentioning

confidence: 95%

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Influence of Dopant Loading on the Photo‐ and Electrochemical Properties of (N, O)‐Co‐doped Graphene.

et al. 2015

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supporting

confidence: 53%

mentioning

confidence: 95%

Influence of Dopant Loading on the Photo‐ and Electrochemical Properties of (N, O)‐Co‐doped Graphene.

et al. 2015

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“…Recently, the appearance of the nitrogen peak at 403 eV for nitrogen embedded tetrahedrally into diamond has also been predicted by detailed DFT calculations, confirming our conclusions. [29] The shift in nitrogen peak position to higher energy is not a chemical shift due to NÀO bonding, as no oxygen is detectable in the sample. A second indication that the nitrogen is embedded within the diamond cores is given by the quantification of the atomic nitrogen to carbon ratio in the DND samples.…”

Section: Discussionmentioning

confidence: 99%

Determination of Size, Morphology, and Nitrogen Impurity Location in Treated Detonation Nanodiamond by Transmission Electron Microscopy

Turner

Lebedev

Shenderova³

et al. 2009

Adv Funct Materials

112

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Size, morphology, and nitrogen impurity location, all of which are all thought to be related to the luminescent properties of detonation nanodiamonds, are determined in several detonation nanodiamond samples using a combination of transmission electron microscopy techniques. Results obtained from annealed and cleaned detonation nanodiamond samples are compared to results from conventionally purified detonation nanodiamond. Detailed electron energy loss spectroscopy combined with model‐based quantification provides direct evidence for the sp3 like embedding of nitrogen impurities into the diamond cores of all the studied nanodiamond samples. Simultaneously, the structure and morphology of the cleaned detonation nanodiamond particles are studied using high resolution transmission electron microscopy. The results show that the size and morphology of detonation nanodiamonds can be modified by temperature treatment and that by applying a special cleaning procedure after temperature treatment, nanodiamond particles with clean facets almost free from sp2 carbon can be prepared. These clean facets are clear evidence that nanodiamond cores are not necessarily in coexistence with a graphitic shell of non‐diamond carbon.

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“…R C1 corresponds to the region where typical graphitic sp 2 hybridized carbon appears, from 284 to 285 eV. The high-energy section of R C1 is also sensible to the contributions of sp 3 hybridized carbon with longer C-C bonds, as has been described theoretically for a-C. 22 R C2 (from 285 to 287 eV) can be associated in this case to sp 2 carbon atoms bonded to N or sp 3 atoms, which is in accordance with the clear increase of peak intensity in this energy region for N containing NC-based membranes. R C3 region corresponds to sp 3 hybridized carbons with nitrogen to the nearest neighbors.…”

Section: Structural Characterizationmentioning

confidence: 99%

“…R C3 region corresponds to sp 3 hybridized carbons with nitrogen to the nearest neighbors. For N 1s, the components were analyzed in terms of two energetic regions: R N1 and R N2 , which according with previous investigations 22,23 can be attributed to two coordinated N, or three coordinated N bonded to saturated carbons (R N1 ). The high-energy region R N2 would correspond to N sitting within C aromatic structures or having aromatic groups as first neighbors.…”

Section: Structural Characterizationmentioning

confidence: 99%

Nanostructured carbon-based membranes: nitrogen doping effects on reverse osmosis performance

et al. 2016

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Ultrathin, flexible and highly water-permeable nanostructured carbon (NC)-based membranes are formed on porous polymer supports by plasma high-power impulse magnetron sputtering in order to fabricate carbon-based membranes for water desalination. The carbon membranes are produced at room temperature using mixtures of argon (Ar), nitrogen (N 2 ) and methane (CH 4 ) as precursors, and this procedure constitutes a simple solvent-free, waste-free scalable process. Structural characterization, molecular simulation, water permeation and salt rejection assessments are used to correlate the performance and membrane structure. Molecular simulations indicate that nitrogen doping on the carbon-based membranes drastically modifies the pore distribution and avoids the formation of clustered regions of high-density carbons. The optimum NC-based membrane has up to 96% salt rejection rate for 0.2 wt% NaCl saline water, with high water permeability ca. 25 l m − 2 h − 1 MPa − 1 . The NC-based membranes as active layers for desalination membranes exhibit attractive characteristics which render them a potential alternative to current polymeric technology used in reverse osmosis processes.

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Carbon and nitrogen 1s energy levels in amorphous carbon nitride systems: XPS interpretation using first-principles

Cited by 140 publications

References 41 publications

Influence of Dopant Loading on the Photo‐ and Electrochemical Properties of (N, O)‐Co‐doped Graphene.

Influence of Dopant Loading on the Photo‐ and Electrochemical Properties of (N, O)‐Co‐doped Graphene.

Determination of Size, Morphology, and Nitrogen Impurity Location in Treated Detonation Nanodiamond by Transmission Electron Microscopy

Nanostructured carbon-based membranes: nitrogen doping effects on reverse osmosis performance

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