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<p><i>Cistanche tubulosa</i> is a kind of herb with good neuroprotective effect. But the current process for extracting acteoside (ACT), which is the main component, is very complicated. In this work, a thin-shell hollow structure carbon sphere (THCS) with abundant amino groups was synthesized by the hard template method for efficient ACT adsorption. The unique thin-shell hollow spherical structure and abundant amino groups inside the carbon sphere served as the storage area and the adsorption area respectively, which significantly improve the adsorption capacity of ACT. The highest adsorption property and selectivity were 369.98 ± 4.83&#xa0;mg/g and 2.3 ± 0.47. Kinetic and isothermal analyses revealed that the pseudo-second-order model (R<sup>2</sup> = 0.9901) provided the best fit and the adsorption process followed the Langmuir isotherm model (R<sup>2</sup> = 0.9911). The thermodynamic analysis further indicated that the adsorption of ACT onto the THCS was a spontaneous and endothermic process (<i>ΔH</i> = 43.41&#xa0;kJ/mol, <i>ΔG</i> &lt; 0). The adsorption mechanisms proposed that hydrogen bonding were the main interaction forces between THCS and ACT. Therefore, the development of adsorbents with a thin-shell hollow structure provides a simple and effective strategy for the separation of bioactive components from natural products.</p>

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Hydrogen Bonding-Driven Thin-Shell Hollow Carbon Sphere with Amino Groups for High Adsorption Capacity of Acteoside

  • 期刊论文

  • 发表日期：

    2025年7月4日

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  • Can Cui,
  • Yipei Li,
  • Yu Sun,
  • Weibo Ru,
  • Guoxi Zhang,
  • Xueqin Li

摘要

Cistanche tubulosa is a kind of herb with good neuroprotective effect. But the current process for extracting acteoside (ACT), which is the main component, is very complicated. In this work, a thin-shell hollow structure carbon sphere (THCS) with abundant amino groups was synthesized by the hard template method for efficient ACT adsorption. The unique thin-shell hollow spherical structure and abundant amino groups inside the carbon sphere served as the storage area and the adsorption area respectively, which significantly improve the adsorption capacity of ACT. The highest adsorption property and selectivity were 369.98 ± 4.83 mg/g and 2.3 ± 0.47. Kinetic and isothermal analyses revealed that the pseudo-second-order model (R2 = 0.9901) provided the best fit and the adsorption process followed the Langmuir isotherm model (R2 = 0.9911). The thermodynamic analysis further indicated that the adsorption of ACT onto the THCS was a spontaneous and endothermic process (ΔH = 43.41 kJ/mol, ΔG < 0). The adsorption mechanisms proposed that hydrogen bonding were the main interaction forces between THCS and ACT. Therefore, the development of adsorbents with a thin-shell hollow structure provides a simple and effective strategy for the separation of bioactive components from natural products.