Developing Eco-Friendly and Cost-Effective Porous Adsorbent for Carbon Dioxide Capture.

Mahboubeh Nabavinia,Naohiro Fujinuma,Amos Mugweru,Iman Noshadi,Baishali Kanjilal

doi:10.3390/molecules26071962

Mahboubeh Nabavinia, Naohiro Fujinuma + Show 3 more

Open Access

https://doi.org/10.3390/molecules26071962

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Abstract

To address the issue of global warming and climate change issues, recent research efforts have highlighted opportunities for capturing and electrochemically converting carbon dioxide (CO2). Despite metal doped polymers receiving widespread attention in this respect, the structures hitherto reported lack in ease of synthesis with scale up feasibility. In this study, a series of mesoporous metal-doped polymers (MRFs) with tunable metal functionality and hierarchical porosity were successfully synthesized using a one-step copolymerization of resorcinol and formaldehyde with Polyethyleneimine (PEI) under solvothermal conditions. The effect of PEI and metal doping concentrations were observed on physical properties and adsorption results. The results confirmed the role of PEI on the mesoporosity of the polymer networks and high surface area in addition to enhanced CO2 capture capacity. The resulting Cobalt doped material shows excellent thermal stability and promising CO2 capture performance, with equilibrium adsorption of 2.3 mmol CO2/g at 0 °C and 1 bar for at a surface area 675.62 m2/g. This mesoporous polymer, with its ease of synthesis is a promising candidate for promising for CO2 capture and possible subsequent electrochemical conversion.

Highlights

With a significant rise in the average atmospheric CO2 concentration from levels in the preindustrial age, deleterious effects on global warming and climate change have become visible [1,2,3]
My-x-RFs were synthesized by a one-pot solvothermal method. 1.5 g resorcinol was dissolved in 4.4 mL of deionized water (DI)
The presented method can strongly promote the industrial application of mesoporous polymer by overcoming a series of process and scale up limitation associated with the traditional template-based self-assembly route

Summary

Introduction

With a significant rise in the average atmospheric CO2 concentration from levels in the preindustrial age, deleterious effects on global warming and climate change have become visible [1,2,3]. Some of the most remarkable strategies are CO2 capturing and conversion technologies, such as chemical, photocatalytic [4,5], and electrocatalytic reduction [6,7,8], for which the first step is efficient CO2 capture In many of these technologies, heterogenous conversion catalysts, function [9,10,11], in the first step as, solid adsorbents and some of these entail materials such as silica [12,13,14], metal-organic frame (MOFs) [3], and carbon-based materials [14,15,16,17]. Adsorption capacity and activity of adsorbents has been enhanced using functionalization of the catalyst surface and pore lining [14,20,28]

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