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. 2013:4:1960.
doi: 10.1038/ncomms2960.

Capture and conversion of CO2 at ambient conditions by a conjugated microporous polymer

Yong Xie  1 , Ting-Ting Wang, Xiao-Huan Liu, Kun Zou, Wei-Qiao Deng
Affiliations
Free PMC article

Capture and conversion of CO2 at ambient conditions by a conjugated microporous polymer

Yong Xie et al. Nat Commun. 2013.
Free PMC article

Abstract

Conjugated microporous polymers are a new class of porous materials with an extended π-conjugation in an amorphous organic framework. Owing to the wide-ranging flexibility in the choice and design of components and the available control of pore parameters, these polymers can be tailored for use in various applications, such as gas storage, electronics and catalysis. Here we report a class of cobalt/aluminium-coordinated conjugated microporous polymers that exhibit outstanding CO2 capture and conversion performance at atmospheric pressure and room temperature. These polymers can store CO2 with adsorption capacities comparable to metal-organic frameworks. The cobalt-coordinated conjugated microporous polymers can also simultaneously function as heterogeneous catalysts for the reaction of CO2 and propylene oxide at atmospheric pressure and room temperature, wherein the polymers demonstrate better efficiency than a homogeneous salen-cobalt catalyst. By combining the functions of gas storage and catalysts, this strategy provides a direction for cost-effective CO2 reduction processes.

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Figures

Figure 1
Figure 1. Synthesis of Co-CMP (Method A) and Al-CMP (Method B).
Full experimental details and characterization are provided in the Supplementary Methods.
Figure 2
Figure 2. Computer-modelled structure and NMR spectrum of Co-CMP.
(a) Three-dimensional view of Co-CMP in an amorphous periodic cell. (b) Solid-state 1H–13C CP/MAS NMR spectrum of Co-CMP recorded at a spinning speed of 10 kHz.
Figure 3
Figure 3. Morphological structures of Co-CMP and Al-CMP.
SEM images of the microporous conjugated polymers Co-CMP (a) and Al-CMP (c) (scale bar, 500 nm). High-resolution transmission electron microscope (HR-TEM) images of Co-CMP (b) and Al-CMP (d) (scale bar, 2 nm).
Figure 4
Figure 4. Gas uptake data for conjugated microporous polymers.
(a) N2 adsorption and desorption isotherms for CMP (blue triangles), Co-CMP (black squares) and Al-CMP (red circles) at 77.3 K. (b) CO2 sorption and desorption isotherms for CMP (blue triangles), Co-CMP (black squares) and Al-CMP (red circles) at 298 K.
Figure 5
Figure 5. The catalytic activity of various catalytic systems and the recycling of Co-CMP.
(a) The yield (PC) depending on reaction time at atmospheric pressure and room temperature. (b) The recycling stability of Co-CMP under various experimental conditions.
See this image and copyright information in PMC

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