Affiliation:
1. Department of Chemistry and Chemical Engineering, Hebei Normal University for Nationalities, Chengde 067000, P. R. China
2. College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, P. R. China
Abstract
Heteroatom-doped ordered mesoporous carbons (OMCs) have currently been considered as promising electrode materials for electrochemical sensors due to the combined advantages of ordered mesoporous materials and heteroatom-doped carbon materials. Herein, a novel nitrogen and sulfur co-doped OMCs (N,S-OMC) has been prepared via a nanocasting strategy with an inexpensive methylene blue as single precursor. The obtained mesoporous carbon has platelet morphology, short mesoporous channel together with a large surface area (549[Formula: see text]m2/g) as well as rich N- and S-containing functional groups (6.8[Formula: see text]at.% N and 2.3[Formula: see text]at.% S). Compared with the graphene (GR) and carbon nanotube (CNT) electrode material, the N,S-OMC exhibited a higher electrochemical activity towards the oxidation of herbicide amitrole, ascribable to N,S-OMC’s open mesoporous structures and abundant electroactive defect sites on the carbon skeleton. And, an amitrole electrochemical sensor with N,S-OMC modified electrode as working electrode was fabricated, exhibiting a good selectivity, stability, reproducibility and wide linear range of 3–750[Formula: see text][Formula: see text]M. Moreover, the N,S-OMC-based electrochemical sensor was proved feasible in river water sample analyses, showing a satisfied recovery ranging from 97.03% to 105.42%. The results not only demonstrate cheap methylene blue can be used as single precursor for the N,S-OMC preparation, but also confirm the N,S-OMC is promising in amitrole sensor fabrication.
Funder
the project of Hebei Province Natural and Scientific Foundation
the project of Chengde Science and Technology Bureau
the young foundation project of Hebei Province Educational Bureau
the top talent project of Hebei Province Educational Bureau
technology Support Program of Hebei Province
Publisher
World Scientific Pub Co Pte Lt
Subject
Condensed Matter Physics,General Materials Science
Cited by
2 articles.
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