Study on the copper(II)-doped MIL-101(Cr) and its performance in VOCs adsorption

Abstract

The metal-organic framework (MOF) materials, MIL-101(Cr), and copper-doped MIL-101(Cr) (Cu@MIL-101(Cr)) were prepared through hydrothermal method and were used to remove volatile organic compounds (VOCs) in this study. Morphological characterization demonstrated that MIL-101(Cr) and Cu-3@MIL-101(Cr) were octahedral crystal, with specific surface area of 3367 and 2518 m/g, respectively. The results of XRD, TG, and FTIR showed that the copper doping procedure would not alter the skeleton structure, but it would affect the crystallinity and thermal stability of MIL-101(Cr). Besides, MIL-101(Cr) and Cu-3@MIL-101(Cr) displayed good removal efficiencies on benzene sorption, and the maximum sorption capacity was 103.4 and 114.4 mg/g, respectively. In competitive adsorptions, the order of adsorption priority on Cu-3@MIL-101(Cr) was as follows: ethylbenzene > toluene > benzene. Hence, it could be concluded that MIL-101(Cr) and copper-doped MIL-101(Cr) demonstrated good performance in VOCs adsorption and showed a promising potential for large-scale applications in the removal of VOCs. Graphical abstract ᅟ.

Impregnation Synthesized Cu@MIL‐101(Cr) Catalyzes the Oxidation of Styrene to Benzaldehyde with TBHP**

“…Fourier transform infrared (FT-IR) spectrums of MIL-101(Cr) and M@MIL-101(Cr) were exhibited in Figure 2, which are similar to ones of MIL-101(Cr) reported before, [35,36] indicating that MIL-101(Cr) and M@MIL-101(Cr) were prepared swimmingly and the functional groups of MIL-101(Cr) were retained after the incorporation of M 2 + . The stretching and bending vibrations corresponding to 3431 and 1620 cm À 1 were caused by water, which was absorbed on the MIL-101(Cr), respectively.…”

Novel Hierarchical Fe(III)-Doped Cu-MOFs With Enhanced Adsorption of Benzene Vapor

“…Metal-organic frameworks (MOFs), as novel adsorbents, have been attracted considerable attention owing to their excellent specific surface and porosity, as well as tunable topologies (Sun et al, 2014; Ahmed and Jhung, 2016; Li et al, 2018; Lin et al, 2018). Importantly, MOFs have been developed as attractive candidates for VOCs adsorption (Duan et al, 2013; Vellingiri et al, 2016, 2017; Wang et al, 2018). Hu et al (2018) reported that UiO-66 had the high adsorption capacities of chlorobenzene (4.94 mmol/g) and acetaldehyde (9.42 mmol/g).…”

UiO-66 Selective Enrichment Integrated with Thermal Desorption GC-MS for Detection of Benzene Homologues in Ambient Air

“…Typically, some MOFs nanomaterials with large surface area and high thermal stability are hydrophobic and show great potential as efficient sorbents for VOCs. In the past few years, great efforts have been conducted to depict the excellent adsorption capacity of MOFs against VOCs [19][20][21][22][23].…”