Facile Fabrication of N‑Doped Magnetic Porous
Carbon for Highly Efficient Mercury Removal
Lijin Huang
Man He
Beibei Chen
Bin Hu
10.1021/acssuschemeng.8b01498.s001
https://acs.figshare.com/articles/journal_contribution/Facile_Fabrication_of_N_Doped_Magnetic_Porous_Carbon_for_Highly_Efficient_Mercury_Removal/6847478
N-doped
magnetic porous carbon (N-MPC) is an emerging adsorbent
for water pollution control. However, high cost and multisteps procedure
make the direct fabrication of N-MPCs difficult until now. Herein,
highly dispersed N-MPCs were synthesized by a facial one-pot solid-state
pyrolysis strategy. Heating the mixture of ZnO, Co(OH)<sub>2</sub>, and 2-methylimidazole (HmIm), Zn/Co bimetallic ZIFs formed at the
initial stages, being the primary self-template to produce N-MPCs
during subsequent high-temperature treatment. By altering the pyrolysis
temperature and the molar ratio of ZnO/Co(OH)<sub>2</sub> in the precursor,
the magnetism, nitrogen content, and surface areas of N-MPCs can be
easily controlled. Due to its high special surface areas and the decoration
of abundant nitrogen functional groups (pyrrole-N and pyridinic-N),
the optimized N-MPC-700-7/3 exhibited a superior adsorption performance
for Hg<sup>2+</sup> uptake (489 mg g<sup>–1</sup>). Moreover,
the N-MPCs exhibited fast dynamics in adsorption (<i>K</i><sub>2</sub> = 0.47 g mg<sup>–1</sup> min<sup>–1</sup>) and good chemical stability. The simple, sustainable, and impressive
method provides an attractive way to manufacture efficiency MPC sorbents,
and the prepared N-MPCs merit good application potential in environmental
remediation.
2018-07-12 00:00:00
water pollution control
Efficient Mercury Removal N-doped
ZIF
efficiency MPC sorbents
surface areas
N-MPC