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

Siddulu Naidu Talapaneni, Srinivasan Anandan, Gurudas P. Mane, Chokkalingam Anand, Dattatray Dhawale, Shaji Varghese, Ajayan Mano, Toshiyuki Mori, Ajayan Vinu

Research output: Contribution to journalArticle

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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.

Original languageEnglish
Pages (from-to)9831-9840
Number of pages10
JournalJournal of Materials Chemistry
Volume22
Issue number19
DOIs
Publication statusPublished - 21 May 2012
Externally publishedYes

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ethylenediamine
Carbon nitride
Carbon Monoxide
Specific surface area
Nitriles
Catalysts
Carbon tetrachloride
Carbon Tetrachloride
Temperature programmed desorption
Alkalinity
Pore structure
Silicon Dioxide
Diffraction patterns
Condensation
Electron microscopes
X ray photoelectron spectroscopy
Tuning
Silica
Spectroscopy
Powders

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemistry(all)

Cite this

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; Varghese, Shaji; Mano, Ajayan; Mori, Toshiyuki; Vinu, Ajayan.

In: Journal of Materials Chemistry, Vol. 22, No. 19, 21.05.2012, p. 9831-9840.

Research output: Contribution to journalArticle

Talapaneni, SN, Anandan, S, Mane, GP, Anand, C, Dhawale, D, Varghese, S, Mano, A, Mori, T & Vinu, A 2012, 'Facile synthesis and basic catalytic application of 3D mesoporous carbon nitride with a controllable bimodal distribution', Journal of Materials Chemistry, vol. 22, no. 19, pp. 9831-9840. https://doi.org/10.1039/c2jm30229b
Talapaneni, Siddulu Naidu ; Anandan, Srinivasan ; Mane, Gurudas P. ; Anand, Chokkalingam ; Dhawale, Dattatray ; Varghese, Shaji ; Mano, Ajayan ; Mori, Toshiyuki ; Vinu, Ajayan. / Facile synthesis and basic catalytic application of 3D mesoporous carbon nitride with a controllable bimodal distribution. In: Journal of Materials Chemistry. 2012 ; Vol. 22, No. 19. pp. 9831-9840.
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AU - Dhawale, Dattatray

AU - Varghese, Shaji

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