Selective separation of methyl orange from water using magnetic ZIF-67 composites

Yang, Qingxiang; Ren, Xiaobing; Zhao, Qianqian; Lu, Ran; Cheng, Hui‐Ming; Chen, Zhijun; Zheng, He‐Gen

doi:10.1016/j.cej.2017.09.099

Cited by 366 publications

(117 citation statements)

References 40 publications

Supporting

Mentioning

109

Contrasting

Unclassified

Order By: Relevance

“…Two main peaks at the binding energies of around 784.5 and 799.7 eV correspond to Co 2p 3/2 and Co 2p 1/2 , respectively. Besides, there were two small peaks at 789.4 and 805.8 eV in the XPS spectrum, corresponding to the shakeup satellite peaks of Co 2+ (Yang et al, ). As shown in Figure d, one peak at the binding energies of around 298.9 eV is assigned to imidazole N 1s which coordinated with Co 2+ .…”

Section: Resultsmentioning

confidence: 99%

“…The peak at 1,586 cm −1 is assigned to the stretching mode of C=N bonding in 2‐methylimidazolate. The bands in the region of 500–800 cm −1 can be ascribed to the characteristic vibration of imidazole ring (Yang et al, ). In addition, the adsorption band at 578 cm −1 is assigned to the Fe‐O bond in Fe 3 O 4 .…”

Section: Resultsmentioning

confidence: 99%

“…There are many reports that ZIFs were used as adsorbents to remove organic/inorganic contaminant from wastewater, and they showed a great potential application in wastewater treatment. In particular, ZIF‐67 exhibited excellent adsorption capability for the removal of several hazardous pollutants including Cr(VI) (Li, Gao, Ai, & Jiang, ), benzotriazole (Andrew Lin & Lee, ; Wang et al, ), methyl orange (Du et al, ; Yang et al, ), malachite green (Andrew Lin & Chang, ), phenol (Pan et al, ), and 1‐naphthol (Yan, Hu, Chen, Zhang, & Zhou, ). These studies suggested that hydrophobic pore and surface structure and the affinity of cobalt cation in ZIF‐67 were responsible for the excellent adsorption performance.…”

Section: Introductionmentioning

confidence: 99%

“…However, the separation of ZIF‐67 from wastewater needs to be centrifuged at high speed, which consumes large amounts of energy. To solve this issue, Fe 3 O 4 /ZIF‐67 composite has been fabricated because of its advantages of magnetic and porous property (Andrew Lin & Lee, ; Yang et al, ). It could be easily and rapidly separated from wastewater by using an external magnetic field.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Fabrication of Fe₃O₄/ZIF‐67 composite for removal of direct blue 80 from water

Gao

Cui

et al. 2019

Water Environment Research

View full text Add to dashboard Cite

Fe 3 O 4 /ZIF-67 composite was successfully fabricated by a facile method and used as adsorbent to remove direct blue 80 (DB80, azo dye) from water. Characterizations of Fe 3 O 4 /ZIF-67 composite were performed by scanning electron microscopy (SEM), powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), N 2 adsorption/desorption isotherms, Fourier transform infrared spectroscopy (FTIR), and magnetic property analysis. As an adsorbent, the factors (such as adsorbent dose, pH, initial concentration, contact time, and temperature) affecting the adsorption performance of adsorbent were investigated. The optimal adsorption condition is 5 mg of Fe 3 O 4 /ZIF-67 composite in 8 ml of DB80 solution (70 mg/L) for 60 min at 318 K, and the pH value has little effect on the adsorption performance. The adsorption isotherm, kinetics, and thermodynamics of DB80 adsorbed on the Fe 3 O 4 /ZIF-67 composite were also studied. The experimental results revealed that the experimental data followed the Langmuir model and the adsorption behavior could be well explained by pseudosecond-order kinetic model. Thermodynamic analysis indicated that the adsorption was a spontaneous and endothermic process. Furthermore, the mechanism of DB80 adsorbed on the Fe 3 O 4 /ZIF-67 composite was proposed. The occurrence of adsorption might be caused by the π-π stacking interaction between Fe 3 O 4 /ZIF-67 composite and DB80.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fabrication of Fe₃O₄/ZIF‐67 composite for removal of direct blue 80 from water

Gao

Cui

et al. 2019

Water Environment Research

View full text Add to dashboard Cite

show abstract

“…These MOF-based magnetic composites have high capacity toward a certain dye; the application of selective removal of specific dye from a mixture of multiple dye-polluted water needs more development. In 2018, Yang et al reported a novel Fe 3 O 4 -PSS@ZIF-67 magnetic core-shell composite for selective adsorption of methyl orange (MO) from MO and methylene blue (MB) mixed solution ( Figure 7) [45]. The results demonstrated that the adsorption capacity of the magnetic composites for MO was measured to be 738 mg g -1 with the separation rate of up to 92%.…”

Section: Adsorption Of Dyes Frommentioning

confidence: 99%

Magnetic Nanoparticles@Metal-Organic Framework Composites as Sustainable Environment Adsorbents

Zhao

Qin

Pan

et al. 2019

Journal of Nanomaterials

View full text Add to dashboard Cite

Metal-organic frameworks (MOFs) are an intriguing class of porous inorganic-organic hybrid networks synthesized from metal ions with multidentate organic ligands. MOFs have uniform and tunable cavities and tailorable chemistry, making them promising materials for hazardous component removal from the environment. Controllable integration of magnetic nanoparticles (NPs) and MOFs is leading to the creation of many novel multifunctional MOF-based composites, which exhibit advanced performance that is superior to both of the individual units. This review summarizes the recent significant advances in the development of MOF-based magnetic heterostructure materials for the removal of hazardous contaminants from the environment. The successful methods reported till date for the magnetic MOF synthesis are also provided. In the final section, we provide our views on the future development of the magnetic MOF heterostructure materials for the pollution management.

show abstract

In Situ Constructed Magnetic Core‐Shell Hydrogen‐Bonded Organic Framework‐on‐Metal–Organic Framework Structure: an Efficient Catalyst for Peroxymonosulfate Activation

Du,

Ding,

Deng

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

Zeolite imidazole‐based framework (ZIF‐67), a notable class of metal–organic frameworks (MOFs), shows promise in activating peroxymonosulfate (PMS) for pollutant degradation due to its uniformly distributed cobalt ions. However, its nanoparticle form and the elution of cobalt ions during use cause challenges in recycling and the risk of secondary pollution. In this study, a magnetic core‐shell hydrogen‐bonded organic framework (HOF) on the MOF (HOF‐on‐Fe3O4/ZIF‐67) is successfully prepared. The porous HOF shell not only protects the active sites and mitigates cobalt ion leaching but also reduces mass transfer limitations, ensuring sustained catalytic performance. The magnetic Fe3O4 core enhances electron transfer between cobalt ions, boosts catalytic efficiency, and facilitates easy separation and recycling. This core‐shell structure effectively activates PMS, achieving 100% removal of Rhodamine B, a model wastewater dye, within 10 min (Rh B = 50 mg L−1, HFZ = 150 mg L−1, PMS = 1.5 mm, pH = 7, room temperature). Furthermore, under the protection of the HOF shell, cobalt ion leaching is minimized to a negligible value (0.14 mg L−1) after 5 cycles of use. The research provides fresh perspectives into the development of core‐shell composite materials with improved performance and recyclability in wastewater treatment.

show abstract

Selective separation of methyl orange from water using magnetic ZIF-67 composites

Cited by 366 publications

References 40 publications

Fabrication of Fe₃O₄/ZIF‐67 composite for removal of direct blue 80 from water

Fabrication of Fe₃O₄/ZIF‐67 composite for removal of direct blue 80 from water

Magnetic Nanoparticles@Metal-Organic Framework Composites as Sustainable Environment Adsorbents

In Situ Constructed Magnetic Core‐Shell Hydrogen‐Bonded Organic Framework‐on‐Metal–Organic Framework Structure: an Efficient Catalyst for Peroxymonosulfate Activation

Contact Info

Product

Resources

About

Selective separation of methyl orange from water using magnetic ZIF-67 composites

Cited by 366 publications

References 40 publications

Fabrication of Fe3O4/ZIF‐67 composite for removal of direct blue 80 from water

Fabrication of Fe3O4/ZIF‐67 composite for removal of direct blue 80 from water

Magnetic Nanoparticles@Metal-Organic Framework Composites as Sustainable Environment Adsorbents

In Situ Constructed Magnetic Core‐Shell Hydrogen‐Bonded Organic Framework‐on‐Metal–Organic Framework Structure: an Efficient Catalyst for Peroxymonosulfate Activation

Contact Info

Product

Resources

About

Fabrication of Fe₃O₄/ZIF‐67 composite for removal of direct blue 80 from water

Fabrication of Fe₃O₄/ZIF‐67 composite for removal of direct blue 80 from water