Open AccessOne-Step Synthesis of Microporous Carbon Monoliths Derived from Biomass with High Nitrogen Doping Content for Highly Selective CO2 Capture
Author(s) -
Geng Zhang,
Qiangfeng Xiao,
Hong Lv,
Bing Li,
Haobin Wu,
Yunfeng Lu,
Cunman Zhang
Publication year - 2016
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/srep30049
Subject(s) - microporous material , nitrogen , carbon fibers , chemical engineering , selectivity , nanoporous , materials science , amine gas treating , chemistry , inorganic chemistry , nanotechnology , organic chemistry , catalysis , composite number , engineering , composite material
The one-step synthesis method of nitrogen doped microporous carbon monoliths derived from biomass with high-efficiency is developed using a novel ammonia (NH 3 )-assisted activation process, where NH 3 serves as both activating agent and nitrogen source. Both pore forming and nitrogen doping simultaneously proceed during the process, obviously superior to conventional chemical activation. The as-prepared nitrogen-doped active carbons exhibit rich micropores with high surface area and high nitrogen content. Synergetic effects of its high surface area, microporous structure and high nitrogen content, especially rich nitrogen-containing groups for effective CO 2 capture (i.e., phenyl amine and pyridine-nitrogen) lead to superior CO 2 /N 2 selectivity up to 82, which is the highest among known nanoporous carbons. In addition, the resulting nitrogen-doped active carbons can be easily regenerated under mild conditions. Considering the outstanding CO 2 capture performance, low production cost, simple synthesis procedure and easy scalability, the resulting nitrogen-doped microporous carbon monoliths are promising candidates for selective capture of CO 2 in industrial applications.