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Efficient Extraction of Nicotine From Tobacco Absolute Oil by Ionic Liquid-Decorated Boron Nitride/Poly(N-isopropylacrylamide) Composite Hydrogel
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DOI：10.1002/jssc.70473.png)
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Abstract
En 中文
Nicotine, a tobacco alkaloid with biological activity and unique pharmacological characteristics, holds significant value across pharmaceutical, agricultural, and industrial applications. Given these attributes, there is a growing demand for efficient nicotine extraction from tobacco and its by-products. In this study, a novel ionic liquid (IL)-decorated boron nitride/poly(N-isopropylacrylamide) composite hydrogel (IL-BNNs@P) was synthesized for the effective extraction of nicotine from tobacco absolute oil. Scanning electron microscopy and Fourier-transform infrared analyses confirmed the successful integration of IL-functionalized BNNs within the gel's network structure. This hydrogel revealed an adsorption capacity of 81.49 mg·g−1 with 93.5% extraction efficiency. Furthermore, this hydrogel exhibited exceptional selectivity, with distribution coefficients (Kd) for nicotine (6.27 L·g−1) being 1–2 orders of magnitude higher than those for co-existing impurities, yielding selectivity coefficients (α) of 62.6–174.9. Additionally, after five consecutive adsorption-desorption cycles, the extraction efficiency showed a slight decrease from 93.5% to 90.0%, demonstrating excellent reusability. Notably, rapid nicotine desorption was achieved at 40°C within 15 min. This strategy streamlines the nicotine extraction process while providing a promising pathway for advancing green chemistry techniques in the tobacco industry and related fields.
Keywords:
boron nitride
extraction
ionic liquid
nicotine
poly(N-isopropylacrylamide)
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2.8
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426
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