Abstract
The attapulgite (APT), a typical nano-rod structured clay was introduced to MIL-101(Fe), a typical eco-friendly iron-based Metal-Organic Framework material (MOF), during the preparation by a one-step solvothermal method, which afforded a novel APT and MOF hybrid (APT@MIL). Based on the characterization of SEM, FT-IR and XRD, it was found that the rod-like crystals of APT determined the size of MIL-101(Fe) while maintaining its regular octahedral crystal form, and the crystal size of MIL-101(Fe) in APT@MIL enlarged 4 times. It was also discovered that the rod-like APT were evenly distributed in MIL-101(Fe) crystals. Using APT@MIL as the photocatalyst, some organic dyes were photodegraded in simulated sunlight. The analysis indicated that APT@MIL has high adsorption and photodegradation activity, the removal rate of methylene blue was up to 99.5%. Finally, the photocatalytic activity of APT@MIL was verified by UV-Vis DRS, photoluminescence spectra. The thermodynamic adsorption, kinetic characteristics adsorption, and removal mechanism of APT@MIL are also discussed. In summary, a novel hybrid material APT@MIL was successfully prepared with good adsorption and photocatalytic performance. It is expected to be used in photocatalytic degradation of dye wastewater.
Highlights
Being accompanied by the process of industrialization, human beings are faced with two major challenges of resource shortage and environmental pollution
Scanning Electron Microscope (SEM), FT-IR and X-ray diffraction (XRD) were used for structural characterization and performance analysis
The surface morphologies were characterized by Scanning Electron Microscope (SEM)
Summary
Being accompanied by the process of industrialization, human beings are faced with two major challenges of resource shortage and environmental pollution. Adsorption and photocatalytic degradation of organic dyes by APT@MIL was studied and the removal mechanism was discussed. In APT@MIL, the characteristic absorption peaks of both MIL101(Fe) and APT exist, which means the hybrid material of clay and MOFs was successfully prepared.
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More From: Water science and technology : a journal of the International Association on Water Pollution Research
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