Nitrogen- and Sulfur-Codoped Hierarchically Porous Carbon for Adsorptive and Oxidative Removal of Pharmaceutical Contaminants

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Department of Chemical Engineering and CRC for Contamination Assessment and Remediation of the Environment, Curtin University, GPO Box U1987, Bentley, Western Australia, Australia
*E-mail: [email protected] (H.S.).
*E-mail: [email protected] (S.W.).
Cite this: ACS Appl. Mater. Interfaces 2016, 8, 11, 7184–7193
Publication Date (Web):March 3, 2016
Copyright © 2016 American Chemical Society
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Heteroatom (nitrogen and sulfur)-codoped porous carbons (N-S-PCs) with high surface areas and hierarchically porous structures were successfully synthesized via direct pyrolysis of a mixture of glucose, sodium bicarbonate, and thiourea. The resulting N-S-PCs exhibit excellent adsorption abilities and are highly efficient for potassium persulfate activation when employed as catalysts for the oxidative degradation of sulfachloropyridazine (SCP) solutions. The adsorption capacities of N-S-PC-2 (which contains 4.51 atom % nitrogen and 0.22 atom % sulfur and exhibits SBET of 1608 m2 g–1) are 73, 7, and 3 times higher than those of graphene oxide, reduced graphene oxide, and commercial single-walled carbon nanotube, respectively. For oxidation, the reaction rate constant of N-S-PC-2 is 0.28 min–1. This approach not only contributes to the large-scale production and application of high-quality catalysts in water remediation but also provides an innovative strategy for the production of heteroatom-doped PCs for energy applications.

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The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acsami.6b01748.

  • Adsorption details of the synthesized carbons, adsorption capacity comparison with reported activated carbons, XRD patterns, representative and magnified SEM images, TEM images, high-resolution C 1s spectra, TGA and DTG curves of all of the prepared carbon samples, stability tests of PS/N-S-PC-2, and specific EPR spectra at different time intervals (PDF)

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