Morphology-control of metal-organic framework crystal for effective removal of dyes from water

Xu, Wenjing; Li, Wei; Lü, Li; Zhang, Wensheng; Kang, Jianxun; Li, Baojun

doi:10.1016/j.jssc.2019.120950

Cited by 24 publications

(17 citation statements)

References 44 publications

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“…Moreover, the crystal morphology of MIL-101(Cr) also affected the adsorption performance of MIL-101(Cr). Xu et al [ 107 ] prepared MIL-101(Cr) crystals with different morphologies by varying the reaction temperature and cooling rate and produced spherical MIL-101(Cr) at 150 °C and octahedral MIL-101(Cr) at other temperatures, as shown in Figure 10 a. Figure 10 b showed the adsorption performance of MIL-101(Cr) samples with different temperatures for the dyes (MO and MB).…”

Section: Applicationsmentioning

confidence: 99%

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Advances in Metal-Organic Frameworks MIL-101(Cr)

Zou

Dong

Zhao

2022

IJMS

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MIL-101(Cr) is one of the most well-studied chromium-based metal–organic frameworks, which consists of metal chromium ion and terephthalic acid ligand. It has an ultra-high specific surface area, large pore size, good thermal/chemical/water stability, and contains unsaturated Lewis acid sites in its structure. Due to the physicochemical properties and structural characteristics, MIL-101(Cr) has a wide range of applications in aqueous phase adsorption, gas storage and separation, and catalysis. In this review, the latest synthesis of MIL-101(Cr) and its research progress in adsorption and catalysis are reviewed.

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Section: Applicationsmentioning

confidence: 99%

“… ( a ) Synthetic scheme of different morphologies of MIL-101(Cr) crystal. ( b ) Adsorption performance comparison of samples in MO (200 mg L −1 ) and MB (200 mg L −1 ) solution at neutral medium [ 107 ]. Reprinted from ref.…”

Section: Figures Schemes and Tablesmentioning

confidence: 99%

Advances in Metal-Organic Frameworks MIL-101(Cr)

Zou

Dong

Zhao

2022

IJMS

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“…[10] However, the reaction conditions such as temperature, cooling rate, reactants composition, and mixing solvents have a tremendous impact on structure, morphology, and size of the resulting products. [10][11][12] Therefore, it is crucial to synthesize MOFs under well-controlled conditions and systematically study the effects of different hydrothermal conditions on the structure and physicochemical properties of the resulting MOFs.…”

Section: Introductionmentioning

confidence: 99%

Mixed Metal‐Organic Frameworks as Efficient Semi‐Solid Electrolytes for Magnesium‐Ion Batteries

Hassan

Farkas

Varzi

et al. 2022

Batteries & Supercaps

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One of the main issues of metal organic framework (MOF)‐based solid electrolytes (SE) is their high guest solvent content reaching up to >50 wt% of the total mass of SE pellets. The presence of large solvent amounts reduces the SE hardness and the electrochemical stability in presence of a magnesium (Mg) anode. Moreover, this often leads to misleading ionic conductivity values. In the present work, a strategy to minimize the guest solvent in MOF‐based SE from 44–55 wt% to 20–30 wt% of the total SE's mass is presented. Moreover, mixed metal organic frameworks of different structures and crystallinity are demonstrated for the first time to enhance the ionic conductivity of Mg2+ ions inside the MOFs’ structures. The presence of both highly crystalline and amorphous MOFs increases the degree of disorder in the mixture and consequently opens up extra pathways for Mg2+ ion diffusion. The ionic conductivity of mixed MOFs [amorphous Mgbp3dc and crystalline α‐Mg3(HCOO)6] showed an enhanced value of 3.8×10−5 S cm−1 at 30 °C compared to 1.1×10−6 S cm−1 for α‐Mg3(HCOO)6. Mixed MOF‐SEs with a transference number (t+) of 0.335 showed a good stability in the presence of Mg electrodes with an enhanced reversibility upon galvanostatic cycling.

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“…Especially for the adsorption of MO, the uptake of 160-MIL-101 is significantly higher than that of other adsorbents which have been reported in recent years (Table 2) [64][65][66][67][68][69][70][71][72]. The uptake of 160-MIL-101 is also significantly higher than other MIL-101 and MIL-101 composites from several studies (Table S3) [23,61,[73][74][75][76][77][78]. Figure 3 revealed the maximum adsorption capabilities of 160-MIL-101 toward MO and RB.…”

Section: Adsorption Capacity Of Spherical Mil-101(cr) For Dyesmentioning

confidence: 75%

Low-Temperature and Additive-Free Synthesis of Spherical MIL-101(Cr) with Enhanced Dye Adsorption Performance

et al. 2022

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The chromium-benzenedicarboxylate metal–organic framework (MOF), MIL-101(Cr), is one of the most well-investigated and widely used prototypical MOFs. Regarding its synthesis, the use of a toxic modulator (usually HF) and high reaction temperature (220 °C) are the main factors hindering its further expansion of production and utilization. In fact, high quality MIL-101(Cr) crystals can be prepared at a much lower temperature (160 °C) with spherical morphology via an additive-free approach. Compared to traditional octahedral MIL-101(Cr), the spherical MIL-101(Cr) possesses higher adsorption performance toward dye molecules, including methyl orange (MO) and rhodamine B (RB). The results suggest that toxic additives and high reaction temperatures are not essential in the synthesis of MIL-101(Cr), and the fabrication of spherical MIL-101(Cr) may offer a facile and effective pathway for the large-scale industrial application of MIL-101(Cr).

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Morphology-control of metal-organic framework crystal for effective removal of dyes from water

Cited by 24 publications

References 44 publications

Advances in Metal-Organic Frameworks MIL-101(Cr)

Advances in Metal-Organic Frameworks MIL-101(Cr)

Mixed Metal‐Organic Frameworks as Efficient Semi‐Solid Electrolytes for Magnesium‐Ion Batteries

Low-Temperature and Additive-Free Synthesis of Spherical MIL-101(Cr) with Enhanced Dye Adsorption Performance

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