Mesoporous zeolite-chitosan composite for enhanced capture and catalytic activity in chemical fixation of CO2

Santosh Kumar; K Prasad; João M Gil; Abilio J F N Sobral; Joonseok Koh

doi:10.1016/j.carbpol.2018.06.100

Mesoporous zeolite-chitosan composite for enhanced capture and catalytic activity in chemical fixation of CO₂

Carbohydr Polym. 2018 Oct 15:198:401-406. doi: 10.1016/j.carbpol.2018.06.100. Epub 2018 Jun 25.

Authors

Santosh Kumar¹, K Prasad², João M Gil³, Abilio J F N Sobral⁴, Joonseok Koh⁵

Affiliations

¹ Department of Organic and Nano System Engineering, Konkuk University, Seoul 05029, South Korea.
² University Department of Physics, T.M. Bhagalpur University, Bhagalpur 812 007, India.
³ CFisUC, Department of Physics, University of Coimbra, Coimbra 3004-516, Portugal.
⁴ Chemistry Centre, Department of Chemistry, University of Coimbra, Coimbra 3004-535, Portugal.
⁵ Department of Organic and Nano System Engineering, Konkuk University, Seoul 05029, South Korea. Electronic address: ccdjko@konkuk.ac.kr.

PMID: 30093015
DOI: 10.1016/j.carbpol.2018.06.100

Abstract

Carbon dioxide is one of the greenhouse gases whose increasing concentration in the atmosphere can cause severe problems to both human health and wildlife. A simple ecofriendly procedure was developed to prepare zeolite-chitosan (ZY-CS) composite using solvent exchange followed by calcination for adsorption and chemical fixation of CO₂. The as synthesized ZY-CS composite along with zeolite and chitosan were characterized by attenuated total reflection infrared, X-ray diffraction, thermogravimetric, scanning electron microscopy, high-resolution transmission electron microscopy and nitrogen adsorption-desorption isotherms studies. The ZY-CS composite showed enhanced CO₂ adsorption capacity compared with pure zeolite and chitosan. The composites also exhibited significant catalytic activity in the chemical fixation of CO₂ into cyclic carbonates. This work is foreshadowing the prospect of ZY-CS composite in enhanced capture and catalytic activity in chemical fixation of CO₂ for environmental applications.

Keywords: Capture; Carbondioxide; Chemical fixation; Chitosan; Zeolite.