构建OMMT/HP-MIL-101高性能黄曲霉毒素B1吸附剂

doi:10.3969/j.issn.2097-2806.2025.10.005

摘要/Abstract

摘要：

基于当前饲料中霉菌毒素严重污染的现状，该研究旨在开发构建高性能黄曲霉毒素B₁（AFB₁）的吸附剂。以蒙脱石（MMT）为基础，首先利用有机改性合成了改性蒙脱石（OMMT），其次将其与金属有机骨架材料MIL-101复合，制备了OMMT/MIL-101，最后将OMMT/MIL-101在甲醇溶剂中刻蚀，合成了OMMT复合的多级孔MIL-101，即OMMT/HP-MIL-101。分别对OMMT、OMMT/MIL-101和OMMT/HP-MIL-101进行结构表征并测定了其对AFB₁的吸附效果。结果表明：OMMT/HP-MIL-101对AFB₁的最大吸附能力为17.35 µg/mg。通过Freundlich吸附模型拟合发现OMMT/HP-MIL-101对AFB₁的吸附是多层吸附过程。OMMT增大的分子层间距、HP-MIL-101高的比表面积、丰富的孔结构、暴露的更多吸附位点，增强了与AFB₁的结合力，可用于对AFB₁的高效吸附。

关键词: 金属有机骨架材料, 多级孔, 蒙脱石, 黄曲霉毒素B₁

Abstract:

Mycotoxin is a toxic secondary metabolite and is widely detected in animal feed. Among them, aflatoxin B₁ （AFB₁） is the most noxious and common mycotoxin, and has caused serious biochemical and structural alterations in many organs mainly because their mutagenicity, teratogenicity and carcinogenicity. Therefore, it is an urgent to construct the high performance adsorbent for AFB₁. Herein, we prepared the OMMT/HP-MIL-101 adsorbent using step-by-step modification. Firstly, the MMT was modified with cetyltrimethyl ammonium bromide （CTAB） to get OMMT. Compared with MMT, the interlayer spacing becomes bigger and exposes more adsorption sites, which can enhance the interaction between AFB₁ and OMMT. Secondly, the OMMT was combined with MIL-101 with high specific surface area to form OMMT/MIL-101. The OMMT/MIL-101 exhibits the high specific surface area, which can provide the wide adsorption space for AFB₁. Finally, the OMMT/HP-MIL-101 was fabricated by the treatment of methanol solvent at high temperature to obtain OMMT/HP-MIL-101. OMMT/HP-MIL-101 has higher specific surface area （1 147.71 m²/g）, rich pore structure （micropore, mesopore and macropore）, exposed more adsorption sites leading to the high adsorption capacity for AFB₁（17.35 µg/mg）. In addition, the Freundlich isotherm is found to fit well in defining the adsorption performance of AFB₁ on OMMT/HP-MIL-101, indicating a multi-layer adsorption process. This work displays that OMMT/HP-MIL-101 can serve as the powerful candidate for the adsorption of AFB₁, and provides a theoretical basis for the construction of new porous adsorbents for AFB₁.

Key words: metal-organic frameworks, hierarchical pore, montmorillonite, aflatoxin B₁

中图分类号:

S816

洪沙沙,王鹏,李二冬,郭尚. 构建OMMT/HP-MIL-101高性能黄曲霉毒素B₁吸附剂[J]. 日用化学工业（中英文）, 2025, 55(10): 1260-1267.

Shasha Hong,Peng Wang,Erdong Li,Shang Guo. Construction of an OMMT/HP-MIL-101 adsorbent with high adsorption performance of AFB₁[J]. China Surfactant Detergent & Cosmetics, 2025, 55(10): 1260-1267.

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吸附剂类型	吸附剂名称	吸附脱除率/%	吸附量/（mg/g）	参考文献
磁性介孔硅	NMMS	93.43	0.17	[22]
磁性凹凸棒石	Fe₃O₄@ATP	72.89~86.62	0.05	[23]
磁性石墨烯复合物	MGO	86~93	1.68	[24]
改性蒙脱石	1.5NZMt	NA	4.87	[25]
金属有机骨架衍生材料	Fe-BTC@Lac@FB	90	11.20	[26]
	CuBTC-MOF	NA	17.21	[27]
	Fe₃O₄@UiO-66-NH₂@MON	NA	19.60	[28]
	OMMT/HP-MIL-101	86.76~99.77	17.35	本工作

Langmuir	Freundlich
$q_{\mathrm{e}}=\frac{K_{\mathrm{L}} q_{\mathrm{m}} \rho_{\mathrm{e}}}{1+K_{\mathrm{L}} \rho_{\mathrm{e}}}$	q_e= K_fρ_e^1/ⁿ
q_m= 127.9 μg/mg	K_f= 2.440 μg/mg
K_L= 0.019 54 mL/μg	n = 1.051
R² = 0.992 8	R² = 0.999 8

构建OMMT/HP-MIL-101高性能黄曲霉毒素B₁吸附剂

Construction of an OMMT/HP-MIL-101 adsorbent with high adsorption performance of AFB₁

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