Controllable Transformation of Aligned ZnO Nanorods to ZIF-8 as Solid-Phase Microextraction Coatings with Tunable Porosity, Polarity, and Conductivity

Jingbin Zeng, Yulong Li, Xiaofu Zheng, Zizhou Li, Teng Zeng, Wei Duan, Qing Li, Xiao Shang, Bin Dong

Research output: Contribution to journalArticle

Abstract

While a growing number of solid-phase microextraction (SPME) coatings have been developed, a generalized protocol is still needed to tailor-make SPME coatings with desirable properties for efficient extraction of diverse analytes from sample matrixes. In this work, we developed a versatile approach to prepare SPME coatings with tunable properties by controllable in situ transformation of well-aligned ZNRs into zeolitic imidazolate frameworks-8 (ZIF-8) via reaction with 2-methylimidazole (2-MI). During this process, ZNRs supplied Zn 2+ and served as a "hard template" for the in situ growth of well-aligned ZIF-8 with enhanced surface area for adsorption. Because ZNRs and ZIF-8 exhibit markedly different properties, we obtained a series of ZNRs/ZIF-8 hybrid composites, whose morphology, porosity, polarity, and charge transfer resistance can be fine-tuned by simply controlling the concentration of 2-MI. Preparing ZNRs/ZIF-8 SPME coatings with desired properties enabled effective extraction of a wide range of polar and nonpolar compounds including aliphatic hydrocarbons, polycyclic aromatic hydrocarbons, alcohols, phenols, anilines, and ionic drugs.

Original languageEnglish (US)
Pages (from-to)5091-5097
Number of pages7
JournalAnalytical Chemistry
Volume91
Issue number8
DOIs
StatePublished - Apr 16 2019

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Nanorods
Porosity
Coatings
Ionic drugs
Aniline Compounds
Phenols
Polycyclic Aromatic Hydrocarbons
Charge transfer
Hydrocarbons
Alcohols
Adsorption
Composite materials
2-methylimidazole

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Controllable Transformation of Aligned ZnO Nanorods to ZIF-8 as Solid-Phase Microextraction Coatings with Tunable Porosity, Polarity, and Conductivity. / Zeng, Jingbin; Li, Yulong; Zheng, Xiaofu; Li, Zizhou; Zeng, Teng; Duan, Wei; Li, Qing; Shang, Xiao; Dong, Bin.

In: Analytical Chemistry, Vol. 91, No. 8, 16.04.2019, p. 5091-5097.

Research output: Contribution to journalArticle

Zeng, Jingbin ; Li, Yulong ; Zheng, Xiaofu ; Li, Zizhou ; Zeng, Teng ; Duan, Wei ; Li, Qing ; Shang, Xiao ; Dong, Bin. / Controllable Transformation of Aligned ZnO Nanorods to ZIF-8 as Solid-Phase Microextraction Coatings with Tunable Porosity, Polarity, and Conductivity. In: Analytical Chemistry. 2019 ; Vol. 91, No. 8. pp. 5091-5097.
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