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

Abstract

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

CLC Number:

S816

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.

Figures/Tables 13

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References 30

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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

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

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

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