Porous structure and surface chemistry of nitrogen containing carbons from polymers

Lahaye, J.; Nanse, G.; Bagreev, Andrey; Стрелко, В. В.

doi:10.1016/s0008-6223(98)00225-5

Cited by 278 publications

(151 citation statements)

References 9 publications

Supporting

Mentioning

143

Contrasting

Order By: Relevance

“…65,66 Porous carbons containing N atoms can be obtained using the following several methods: (1) reaction of porous carbons with N-containing gases, [67][68][69] (2) co-carbonization of N-free and N-containing precursors, [70][71][72] (3) carbonization of raw material containing N atoms. 73 However, due to the complexity of the carbon pore structure, it is very difficult to tailor their pore structure, especially their microporosity. Thus, we synthesize N-containing microporous carbons by the template method using zeolite Y.…”

Section: Synthesis Of Ordered Microporous Carbons Using Zeolite Templatementioning

confidence: 99%

Synthesis of Various Types of Nano Carbons Using the Template Technique

Kyotani¹

2006

Bulletin of the Chemical Society of Japan

101

View full text Add to dashboard Cite

Using uniform nanochannels of an aluminum anodic oxide film as a template, uniform and unique multiwalled carbon nanotubes can be synthesized with a selectivity of 100%. This technique allows one to precisely control the diameters and the length of nanotubes. Moreover, it is possible to chemically modify only the inner surface of carbon nanotubes and to prepare carbon nanotubes with a double coaxial structure of heteroatom-doped multiwalls. The test tube like carbon prepared by this technique was found to be dispersible in water without any post treatment. In addition to this one-dimensional approach, unique microporous carbon can be prepared by the template technique using zeolite Y. The resulting microporous carbons are characterized by their regular ordering, originating from the regularity of the parent zeolite. When the synthesis conditions were optimized, the specific surface area and the micropore volume of the zeolitetemplated carbon reach more than 4000 m 2 g À1 and 1.8 cm 3 g À1 , respectively. This review introduces such a templatemediated approach and highlights how useful and versatile the template technique is for the production of nano carbons.Carbon is an element with a unique ability to bond with itself principally via sp 3 (diamond-like) and sp 2 (graphite-like) hybridization. This versatility gives rise to a rich diversity of structural forms of solid carbon. Most of the materials dealt with in carbon science and industry are considered to be composed of mainly large polycyclic aromatic molecules. The differences in the shape of such macromolecules and the way the molecules assemble (how they stack and how they are connected to one another) again lead to an immense variety of possibilities. If one could control the shape of the macromolecules and the state of their assemblage at the nanometer level, it would be possible to prepare carbon materials with a unique nano structure, thereby expecting novel and useful characteristics from the structure. Such control is, however, a very difficult task, because the nano structure of carbon materials is not uniform by nature, except for perfect graphite and diamond. To illustrate, a drawing of the molecular structure of activated carbon is shown in Fig. 1, where many curved polycyclic aromatic molecules with different sizes and shapes are stacked and connected in very complicated ways, which is quite different from the uniform ordered porous structure of zeolite materials. It is easily understood from this molecular model that control of the shape and the position of each macromolecule in the model is very difficult and essentially impossible. For the ultimate control of the carbon nano structure, it is desirable to build up a carbon structure from small building blocks, i.e., synthesize the structure from small organic molecules using techniques developed in the field of organic synthesis. However, the organic syntheses of fullerenes and carbon nanotubes have not been achieved yet, even by using cutting-edge technology. One of the most powerful and pro...

show abstract

Section: Synthesis Of Ordered Microporous Carbons Using Zeolite Templatementioning

confidence: 99%

Synthesis of Various Types of Nano Carbons Using the Template Technique

Kyotani¹

2006

Bulletin of the Chemical Society of Japan

101

View full text Add to dashboard Cite

show abstract

“…In the present work, polymer-pyrolysed mesoporous activated carbon SCN (Lahaye et al 1999) and charcoal KAU from fruit stones (Strelko et al 1998) made in-house were modified as follows. To increase the surface density of hydroxy groups and reduce the amount of uncontrolled impurities, all ACs were oxidised with hydrogen peroxide.…”

Section: Experimental Preparation and Analysis Of Samplesmentioning

confidence: 99%

The Hydrophobisation of Activated Carbon Surfaces by Organic Functional Groups

Budarin

Clark

Mikhalovsky

et al. 2000

Adsorption Science & Technology

View full text Add to dashboard Cite

ABSTRACT:A technique of hydrophobic surface design with a high degree of structural homogeneity has been developed for catalytic materials. Mesoporous activated carbons and silica gel were modified by (A) treatment with vinyltrimethoxysilane (vtms) or (B) chlorination with carbon tetrachloride followed by reaction with a Grignard reagent. Evidence for silica gel modification was obtained from FT-IR and 13 C NMR spectroscopy and from elemental analysis. Carbons chemically modified with alkanes and olefins were studied using thermogravimetry (TG) and the results compared with those for the modified silica gel. TG and differential scanning calorimetry (DSC) revealed that the polymerisation of vinyl groups occurred on the carbon surface. The participation of the carrier surface in the initiation of radical processes has been discussed.

show abstract

“…Among various methods for doping porous carbon materials (PCM), we could mention: 1) reactions of porous carbon with gaseous sources containing nitrogen, [ 8 ] 2) cocarbonization of precursors containing carbon and nitrogen; [ 9 ] and 3) carbonization of materials containing nitrogen. [ 10 ] Other forms of CM include inverse opals, which consist of porous carbons obtained to be smooth and replicated the voids of the opal. We found that only for the 300 nm silica particles the pores appeared well ordered over large volumes, and exhibited an FCC arrangement caused by the original opal structure used to impregnate with carbon.…”

Section: Introductionmentioning

confidence: 99%

Controlling the Optical, Electrical and Chemical Properties of Carbon Inverse Opal by Nitrogen Doping

Morelos-Gómez

Mani-González

Aliev

et al. 2014

Adv Funct Materials

View full text Add to dashboard Cite

Nitrogen-doped carbon inverse opal (CIO-N) is synthesized by a two-step process involving the infi ltration of carbon-nitrogen precursors within opals followed by the thermolysis and removal of the opal structure in hydrofl uoric acid (HF). Undoped samples exhibit a refl ection peak in the red region of the spectrum whereas N-doped samples display shifts to the blue region of the spectrum as the nitrogen content is increased. The degree of crystallinity of CIO-N strongly depends upon the nitrogen content and on the size of the precursor silica particles used to prepare the inverted opals. In addition, the introduction of nitrogen into the samples is able to increase the electrical conductivity by one order of magnitude from 2 to 30 S cm −1 (at room temperature). All samples are characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), ultraviolet-visible (UV-Vis) spectroscopy, and electrical conductivity measurements. It is envisaged that CIO-N could have important applications in the fabrication of photonic crystals, photoconducting materials, molecular sensors, fi eld emission devices, capacitors, batteries, among many others.

show abstract

Porous structure and surface chemistry of nitrogen containing carbons from polymers

Cited by 278 publications

References 9 publications

Synthesis of Various Types of Nano Carbons Using the Template Technique

Synthesis of Various Types of Nano Carbons Using the Template Technique

The Hydrophobisation of Activated Carbon Surfaces by Organic Functional Groups

Controlling the Optical, Electrical and Chemical Properties of Carbon Inverse Opal by Nitrogen Doping

Contact Info

Product

Resources

About