Levofloxacin Synergistic Capture Using a "Memory-Effect" Layered Double Oxides Loaded with ZIF-67 Nanoparticles.

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Tác giả: Wei Dai, Yan Li, Na Ma, Mingzhi Mao, Zhouheng Xia, Tingting Zhan

Ngôn ngữ: eng

Ký hiệu phân loại: 575.486 +Buds

Thông tin xuất bản: United States : Langmuir : the ACS journal of surfaces and colloids , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 744082

Layered double hydroxides (LDHs) are limited by a lack of adsorption active sites and low porosity, leading to a suboptimal performance in antibiotic adsorption. In this study, LDH was used as templates to obtain LDO through high-temperature calcination, creating rapid mass transfer channels for LVX, thereby enhancing adsorption capacity and reducing adsorption time. Subsequently, small ZIF-67 crystals were grown in situ between the layers and on the surface of LDOs, providing additional adsorption active sites and surface area to the LDO@ZIF-67 composite material. In the LVX removal process, the synergistic effect between LDO and ZIF-67 mainly depends on the "memory effect" and the interaction of various mechanisms such as metal complexation, hydrogen bonding, and electrostatic attraction. LDO@ZIF-67 exhibits a rapid adsorption rate toward LVX, reaching adsorption equilibrium within 40 min, with an adsorption capacity as high as 268 mg/g, surpassing values reported in some literature. The adsorption process was more consistent with the Langmuir (
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