Activated MIL-53(Al) for Efficient Adsorption of Dichloromethane and Trichlormethane

Abstract

Activation process designed to remove the solvent and unreacted ligands is the key step for the synthesis of metalorganic frameworks (MOFs). MIL-53(Al), a subclass of MOFs, was prepared using various synthesis and activation methods. Especially, a combined activation method was proposed. The performance of activation methods was evaluated by the specific surface area of the samples. The mechanism of activation methods was confirmed by the loading induced structural transition of MIL-53(Al) using X-ray diffraction. MIL-53(Al) activated by the combined method has the best performance and the adsorption capacities of vaporous dichloromethane (CH 2 Cl 2 ) and trichlormethane (CHCl 3 ) on this sample was investigated at 298 K and 101 kPa. The results of adsorption experiment show that MIL-53(Al) has larger adsorption capacity in CH 2 Cl 2 than CHCl 3 , which is consistent with the conclusion of molecular simulation (Grand Canonical Monte Carlo).

Unveiling the MIL-53(Al) MOF: Tuning Photoluminescence and Structural Properties via Volatile Organic Compounds Interactions

“…The main focus of this work is the MIL-53(Al)’s response to volatile organic compounds (VOCs), which are prevalent indoor air pollutants that contribute to air quality degradation and are found in sources such as industrial emissions, vehicle exhaust and household products [ 23 , 24 ]. The adsorption and removal of these compounds are crucial for preventing negative health effects and environmental impact [ 25 ]. Therefore, a thorough investigation of MIL-53(Al)’s structural transformations when faced with different VOCs is necessary to fully utilize its potential in VOC capture and remediation [ 26 , 27 , 28 , 29 , 30 ].…”

“…The adsorption and removal of these compounds are crucial for preventing negative health effects and environmental impact [25]. Therefore, a thorough investigation of MIL-53(Al)'s structural transformations when faced with different VOCs is necessary to fully utilize its potential in VOC capture and remediation [26][27][28][29][30].…”