Two-dimensional hexagonally-ordered mesoporous carbon nitrides with tunable pore diameter, surface area and nitrogen content

Vinu, Ajayan (2008) Two-dimensional hexagonally-ordered mesoporous carbon nitrides with tunable pore diameter, surface area and nitrogen content. Advanced Functional Materials, 18 5: 816-827. doi:10.1002/adfm.200700783


Author Vinu, Ajayan
Title Two-dimensional hexagonally-ordered mesoporous carbon nitrides with tunable pore diameter, surface area and nitrogen content
Journal name Advanced Functional Materials   Check publisher's open access policy
ISSN 1616-301X
1616-3028
Publication date 2008-03
Sub-type Article (original research)
DOI 10.1002/adfm.200700783
Volume 18
Issue 5
Start page 816
End page 827
Total pages 12
Place of publication Weinheim, Germany
Publisher Wiley
Language eng
Formatted abstract
Two-dimensional mesoporous carbon nitride (MCN) with tunable pore diameters have been successfully prepared for the first time using SBA-15 materials with different pore diameters as templates through a simple polymerization reaction between ethylenediamine (EDA) and carbon tetrachloride (GTC) by a nano hard- templating approach. The obtained materials have been unambiguously characterized using X-ray diffraction (XRD), N2 adsorption, high-resolution transmission electron microscopy (HRTEM) electron energy loss spectroscopy (EELS), high-resolution scanning electron microscopy (HRSEM), X-ray photo-electron spectroscopy (XPS), Fourier transform infrared (FT-IR) spectroscopy, and CHN analysis. The results show that the pore diameter of the MCN materials can be easily tuned from 4.2 to 6.4 nm without affecting their structural order. XRD, HRTEM and N2 adsorption results reveal that the materials are structurally well ordered with a two-dimensional porous structure, a high, surface area and a large pore volume. It is also demonstrated for the first time that the textural parameters such as the specific pore volume, the specific surface area and the pore diameter, and the nitrogen content of the MCN materials can be controlled by the simple adjustment of the EDA to CTC weight ratio. The carbon to nitrogen ratio of the MCN decreases from 4.3 to 33 with increasing EDA to CTC weight ratio from 0.3 to 0.9. The optimum EDA to CTC weight ratio required for fabricating the well-ordered MCN materials with excellent textural parameters and high nitrogen content is around 0.45. The catalytic actmty of the materials has been tested in the Friedel-Crafts acylation of benzene using hexanoyl chloride as the acylating agent. The materials are highly active and show a high conversion and 100 % product selectivity to caprophenone.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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