Loading Control of Metal–Organic Frameworks in Fe₃O₄@MOFs Series Composite Adsorbents for Optimizing Dye Adsorption

Abstract

This study enhanced the dye adsorption capacity and efficiency over Fe 3 O 4 @MOFs series composite adsorbents through enhancing the loading of MOFs. A multiple loading method was developed for controlling the loading percentage of MOFs in Fe 3 O 4 @ MOFs series composite adsorbents, the values of which were calculated by the analysis of results of thermogravimetric analysis, X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, inductively coupled plasma mass spectrometry, Brunauer−Emmett− Teller, and vibrating sample magnetometry measurements. Dye adsorption test presented that an optimized adsorbent with enhanced adsorption capacity and adsorption efficiency could be achieved through enhancing the MOF loading in Fe 3 O 4 @MOFs series composite adsorbents.

Coating metal–organic frameworks on plasmonic Ag/AgCl nanowire for boosting visible light photodegradation of organic pollutants

“…The equilibrium adsorption capacity of Rh B increased with increasing amount of MOF coating layer on the surface of Ag/AgCl nanowire, which is in accordance with our previous work. 50 Under visible light irradiation, Rh B degraded immediately under the catalysis of ACN-1, ACN-2 and ACN-3. However, Ag nanowires have little catalytic activity.…”

Dye contaminated wastewater treatment through metal–organic framework (MOF) based materials

“…143 Xu et al prepared a series of Fe 3 O 4 @MOF magnetic composite materials and used them for decolorization of MB contaminated water; the decolorization capacity of the composite was found to be 70 mg g À1 . 144 Farhadi et al core-shell MOF nanocomposites for the rapid removal of RhB, MO and MB from wastewater effluents. 145 POM/CFO/MIL-101(Cr) was synthesized by the hydrothermal method.…”

Cu-Doped Boron Nitride Nanosheets for Solid-Phase Extraction and Determination of Rhodamine B in Foods Matrix

“…In the past, rhodamine B (RhB) was utilized as a coloring agent in leather, textiles, cosmetics, and other fields owing to its low cost and superior colorfastness [ 1 , 2 , 3 ]. With our increasing consciousness about food safety, RhB has been suggested to be toxic and even carcinogenic, negatively affecting food safety and directly threatening human life.…”