Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 5, Issue 12, Pages 11566-11576Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b02917
Keywords
Graphene oxide; Confined nanospace directed synthesis; Porous carbon nanosheets; Sulfamethazine; KOH activation
Categories
Funding
- National Natural Science Foundation of China [51608226, 21576111, U1510126]
- Natural Science Foundation of Jiangsu Province [BK20140534, BK20160501, BK20170532]
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Glucose-based porous carbon nanosheets (GPCNS) were synthesized by an integrated graphene oxide confined nanospace directed KOH-activated process and were applied as adsorbent for efficient removal of sulfamethazine (SMZ). The effects of GO dosage on the structure, specific surface area, and adsorption capacity of GPCNS-x were investigated. The highest SMZ uptake of 820.27 mg g(-1) (298 K) was achieved in glucose-based porous carbon nanosheets inherited from using 1% GO relative to glucose (GPCNS-1). Also, the adsorption isotherms, thermodynamics, and kinetics of SMZ onto GPCNS-1 were studied in detail. In addition, the effects of ionic strength and solution pH on the adsorption capacity of GPCNS-1 were also investigated, indicating good environmental tolerance of GPCNS-1. Furthermore, regeneration experiments showed that GPCNS-1 has good reproducibility and durability. We believe that these graphene oxide confined nanospace directed KOH-activated process biomass-based carbon nanosheets are highly promising as absorbents in the field of environmental protection.
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