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N-Doped TiO2–Carbon Composites Derived from NH2-MIL-125(Ti) for Electrochemical Determination of tert-Butylhydroquinone

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Abstract

Electrochemical determination of tert-butylhydroquinone (TBHQ) is vital to food safety due to negative health effects; however, bare electrode of traditional electrochemical sensors generally has a narrow linear range and low sensitivity, limiting their practical application. Accordingly, the nano-architecture fabricated with N-doped TiO2–carbon nano-composites (TiO2/NC) is prepared by the thermolysis of NH2 functionalized MIL-125(Ti) metal–organic frameworks (NH2-MIL-125(Ti)). TiO2/NC composites are firstly developed as the electrochemical material for electrochemical determination of TBHQ. The TiO2/NC composites with a highly porous structure, excellent conductivity and electron transportation, and large surface area show remarkable electrochemical oxidation ability for TBHQ. Under optimal conditions, TiO2/NC composite-modified electrode presents a broader linear response to TBHQ concentration of 0.05–100 μM with the detection limit as low as 4 nM (S/N = 3). Finally, the sensor platform is implemented directly to determine TBHQ in edible oil for evaluation of its practical application. TiO2/NC composites sensor fabricated perform larger linear range with high sensitivity and anti-interference properties, which can be used as a potential for electrochemical determination of TBHQ.

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The authors declare that all data supporting the findings of this study are available within the article and its supplementary information file.

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Funding

This work was supported by the National Natural Science Foundation of China (21904004), the Top-Notch Talent Program for Outstanding Young Talents of Anhui Province (gxbjZD2021070), the stable talent program of Anhui Science and Technology University, and the Student’s Platform for Innovation and Entrepreneurship Training Program of China (202010879047).

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Jing Tang: conceptualization, investigation, formal analysis, methodology, writing—original draft, funding acquisition; Jie Li: methodology, writing—original draft; Tianna Liu: data curation’ Wenjing Tang: methodology; Nali Li: data curation; Shengbiao Zheng: formal analysis; Jiahao Guo: writing—review and editing; Changchun Song: conceptualization, investigation, formal analysis, methodology.

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Correspondence to Jing Tang or Changchun Song.

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This article does not contain any studies with human participants or animals performed by any of the authors.

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Informed consent is not applicable in this study.

Conflict of Interest

Jing Tang declares that she has no conflict of interest. Jie Li declares that he has no conflict of interest. Tianna Liu declares that she has no conflict of interest. Wenjing Tang declares that she has no conflict of interest. Nali Li declares that she has no conflict of interest. Shengbiao Zheng declares that he has no conflict of interest. Jiahao Guo declares that he has no conflict of interest. Changchun Song declares that he has no conflict of interest.

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Tang, J., Li, J., Liu, T. et al. N-Doped TiO2–Carbon Composites Derived from NH2-MIL-125(Ti) for Electrochemical Determination of tert-Butylhydroquinone. Food Anal. Methods 15, 2830–2839 (2022). https://doi.org/10.1007/s12161-022-02339-7

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  • DOI: https://doi.org/10.1007/s12161-022-02339-7

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