Platelet Nitrogen and Sulfur Co-doped Ordered Mesoporous Carbon with Inexpensive Methylene Blue as a Single Precursor for Electrochemical Detection of Herbicide Amitrole

Shenghai Zhou; Hongbo Xu; Yanjun Wei; Jing Gao; Yue Feng; Ning Wang; Junfeng Gao

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자료유형: 학술저널

저자정보: Shenghai Zhou (Hebei Normal University) Hongbo Xu (Hebei Normal University) Yanjun Wei (Hebei Normal University) Jing Gao (Hebei Normal University) Yue Feng (Hebei Normal University) Ning Wang (Hebei Normal University) Junfeng Gao (Hebei Normal University)

저널정보: 성균관대학교 성균나노과학기술원 NANO NANO Vol.14 No.8

발행연도: 2019.1

수록면: 109 - 118 (10page)

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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 m2/g) as well as rich N- and S-containing functional groups (6.8 at.% N and 2.3 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 μM. 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.

#Ordered mesoporous carbon #heteroatom doping #electrochemical sensing

참고문헌 (43)

참고문헌 신청

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