Title

Nitrogen- and sulfur-codoped hierarchically porous carbon for adsorptive and oxidative removal of pharmaceutical contaminants

Document Type

Journal Article

Publisher

American Chemical Society

School

School of Engineering

RAS ID

21148

Comments

Originally published as: Tian, W., Zhang, H., Duan, X., Sun, H., Tade, M. O., Ang, H. M., & Wang, S. (2016). Nitrogen-and Sulfur-Codoped Hierarchically Porous Carbon for Adsorptive and Oxidative Removal of Pharmaceutical Contaminants. ACS applied materials & interfaces, 8(11), 7184-7193. Available here.

Abstract

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 singlewalled 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.

DOI

10.1021/acsami.6b01748