As a notorious hazardous
waste, biomass tar has for a long time
been recognized as one of the key challenges throughout the progress
in biomass gasification for renewable energy and chemical purposes.
In this contribution, we report that biomass tar featured with considerably
high carbon and nitrogen contents could serve as an ideal source for
production of nitrogen-doped highly ultramicroporous carbon following
the facile activation approach, which enabled a remarkably high ultramicroporosity
based on a direct bottom-up strategy. Further, the disclosed evenly
distributed active sites by nitrogen-doped ultramicropores displayed
excellent CO2 absorption capacity as high as 6.02 and 4.11
mmol/g (1 bar) at 273 and 298 K, respectively, in addition to the
corresponding ideal adsorption solvent theory selectivity of 30 and
24, which are all among the highest level of solid CO2 absorbents
developed thus far. This work may inspire new sparks on rational disposal
of tar-like byproducts from pyrolysis of organic solid waste and also
encourage future utilization of them for advanced materials for innovative
environmental applications, including CO2 capture and storage
and gaseous pollution control, among others.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.