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

Wenjie Tian, Huayang Zhang, Xiaoguang Duan, Hongqi Sun, Moses O. Tade, Ha Ming Ang, Shaobin Wang

Research output: Contribution to journalArticlepeer-review

267 Citations (Web of Science)

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 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.

Original languageEnglish
Pages (from-to)7184-7193
Number of pages10
JournalACS Applied Materials and Interfaces
Volume8
Issue number11
DOIs
Publication statusPublished - 30 Mar 2016
Externally publishedYes

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