Facile synthesis and basic catalytic application of 3D mesoporous carbon nitride with a controllable bimodal distribution

Talapaneni, Siddulu Naidu, Anandan, Srinivasan, Mane, Gurudas P., Anand, Chokkalingam, Dhawale, Dattatray S., Varghese, Shaji, Mano, Ajayan, Mori, Toshiyuki and Vinu, Ajayan (2012) Facile synthesis and basic catalytic application of 3D mesoporous carbon nitride with a controllable bimodal distribution. Journal of Materials Chemistry, 22 19: 9831-9840. doi:10.1039/c2jm30229b

Author Talapaneni, Siddulu Naidu
Anandan, Srinivasan
Mane, Gurudas P.
Anand, Chokkalingam
Dhawale, Dattatray S.
Varghese, Shaji
Mano, Ajayan
Mori, Toshiyuki
Vinu, Ajayan
Total Author Count Override 9
Title Facile synthesis and basic catalytic application of 3D mesoporous carbon nitride with a controllable bimodal distribution
Journal name Journal of Materials Chemistry   Check publisher's open access policy
ISSN 0959-9428
Publication date 2012-05
Sub-type Article (original research)
DOI 10.1039/c2jm30229b
Open Access Status Not Open Access
Volume 22
Issue 19
Start page 9831
End page 9840
Total pages 10
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Collection year 2013
Language eng
Formatted abstract
Here we demonstrate a facile synthesis of 3D mesoporous carbon nitride with Ia3d symmetry (MCN-6) using mesoporous silica KIT-6 with 3D porous structure and different pore diameters as hard templates, and ethylenediamine and carbon tetrachloride as the sources for N and C, and C, respectively. The obtained materials possess bimodal pores that can be controlled with a simple adjustment of the pore diameter of the KIT-6 templates. The lower angle powder X-ray diffraction (XRD) patterns and high resolution transmission electron microscope (HRTEM) images confirm that the MCN-6 materials possess a well-ordered mesoporous 3D structure with a highly interwoven and a branched pore structure. The textural parameters such as the specific surface areas and specific pore volumes of the materials can also be controlled by tuning the pore diameter of the hard template. The specific surface area and the specific pore volume of the samples increase with increasing the pore diameter of the hard template. The C/N ratio of the MCN-6 is ca. 4.3 which is similar to that obtained for MCN-1 prepared from SBA-15 as template. FT-IR and XPS spectroscopy results reveal that samples contain a CN network with a lot of free NH 2 groups which are originated from ethylenediamine and can offer the basic sites. The temperature programmed desorption of CO 2 confirms that the samples are highly basic and the basicity of the sample is 0.195 mmol of CO 2 per g which is higher than that of MCN-1 (0.14 mmol of CO 2 per g). We tested the performance of MCN-6 materials in the base-catalyzed Knoevenagel condensation of benzaldehyde and malononitrile. The catalysts exhibit excellent activity and afford a high yield of the corresponding α,β-unsaturated nitrile in a short reaction time even at room temperature. In addition, catalysts are highly stable and can be recyclable several times without affecting their activity.
Keyword High-Surface-Area
Silica Structures
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
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