Poly(ionic liquid)-Derived Carbon with Site-Specific N-Doping and Biphasic Heterojunction for Enhanced CO2 Capture and Sensing

TL;DR

This paper presents a novel method to produce nitrogen-doped microporous carbon fibers with a biphasic heterojunction, significantly enhancing CO2 capture and sensing capabilities.

Contribution

It introduces a site-specific nitrogen doping technique using poly(ionic liquid) to create a carbon/carbon heterojunction for improved CO2 interaction.

Findings

Unusually high CO2 uptake achieved

Enhanced resistive sensing performance

Effective site-specific N-doping on carbon fibers

Abstract

CO2 capture is a pressing global environmental issue that drives scientists to develop creative strategies for tackling this challenge. The concept in this contribution is to produce site specific nitrogen doping in microporous carbon fibers. It creates a carbon/carbon heterojunction by using poly(ionic liquid) (PIL) as soft activation agent that deposits nitrogen species exclusively on the skin of commercial microporous carbon fibers. Such carbon-based biphasic heterojunction amplifies the interaction between carbon fiber and CO2 molecule for unusually high CO2 uptake and resistive sensing.