Journal
CHEMICAL ENGINEERING JOURNAL
Volume 367, Issue -, Pages 9-16Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2019.02.121
Keywords
Honeycomb carbon; Hollow carbon spheres; Adsorption; Cr(VI)
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Funding
- National Natural Science Foundation of China [31772390, 31700521]
- Light of West China Program of the Chinese Academy of Sciences
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Hollow carbon spheres (HCSs) were prepared by a hydrothermal synthetic method using glucose as the raw material, and a honeycomb carbon material (HCM) was prepared by modifying these HCSs. The materials were characterized by SEM, TEM, BET, Raman spectroscopy, XPS, XRD, and elemental analysis. A large number of pores were observed in the HCM by SEM and TEM, and the specific surface area of the material, as determined by BET testing, was 1436.21 m(2)/g. The adsorption properties of the HCM were tested by a batch adsorption method. The maximum adsorption capacity of the HCM for Cr(VI) was 332.53 mg/g, and the performance was better than that of a similar materials. The kinetic thermodynamics and intraparticle diffusion models were fit, and it was found that the adsorption of Cr(VI) onto the honeycomb carbon was a spontaneous endothermic process. The regenerative adsorption experiments showed that the material had good regenerative abilities.
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