Construction of crystal defect sites in N-coordinated UiO-66 via mechanochemical in-situ N-doping strategy for highly selective adsorption of cationic dyes

Hu, Peng; Zhao, Zhongxing; Sun, Xubin; Muhammad, Yaseen; Li, Jing; Chen, Shibo; Pang, Chunjiao; Liao, Tingting; Zhao, Zhenxia

doi:10.1016/j.cej.2018.09.060

Cited by 121 publications

(43 citation statements)

References 54 publications

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“…137,144,145 Furthermore, surface alkalinity of the defective UiO-66 has a notable effect on its selective adsorption for cationic dyes (rhodamine B (RhB) and ST) with similar sizes. 146 Alkaline N-compound (pyrrole, dopamine, and 2-methylimidazole) coordination was proved to simultaneously modulate pore sizes and intensify surface alkalinity of the original UiO-66 (Fig. 13c), signicantly decreasing the adsorption interaction towards basic dyes.…”

Section: Decontaminationmentioning

confidence: 99%

Synthesis, characterization and application of defective metal–organic frameworks: current status and perspectives

et al. 2020

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Section: Decontaminationmentioning

confidence: 99%

Synthesis, characterization and application of defective metal–organic frameworks: current status and perspectives

et al. 2020

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“…Many techniques have been developed and employed, such as various chemical methods including electrochemical processes (de Moura et al 2016;He et al 2016), advanced oxidation processes (Gayathri et al 2017;Alcocer et al 2018), and various physical treatment methods including coagulation/flocculation (de Camargo Lima Beluci et al 2019;Song et al 2019), membrane filtration (Han et al 2017;Zhu et al 2017), adsorption (Hadi et al 2016;Li et al 2017;Hong et al 2018;Li et al 2020) and biological treatment methods (Hosseini Koupaie et al 2013). Among these technologies, the adsorption is a promising technique due to the advantages of low cost, no secondary pollution, environmental friendliness, less energy consumption and excellent performance (Ahmed et al 2019;Hu et al 2019). For example, Huang et al (2019) synthesized magnetic graphene oxide modified zeolite for the removal of MB with the maximum adsorption amount of 97.3 mg g À1 at 318 K and the removal efficiency of MB could still reach about 76.9% after five reuse cycles.…”

Section: Introductionmentioning

confidence: 99%

Effective sorptive removal of five cationic dyes from aqueous solutions by using magnetic multi-walled carbon nanotubes

Song

Shi

Wang

et al. 2022

Water Science and Technology

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The excellent properties of micro-nano materials and structures have attracted extensive attention especially in wastewater treatment. Based on this, magnetic multi-walled carbon nanotubes (MMWCNTs) have been prepared and used for the sorptive removal of five typical cationic dyes from aqueous solutions in the present study. Effects of several operational and environmental factors were investigated carefully, including initial pH values, common ions, contact time and temperature. The kinetics processes were well fitted by the pseudo-second-order kinetic model. The maximum adsorption capacities on MMWCNTs at 298.15 K for malachite green oxalate, auramine O, neutral red, crystal violet and rhodamine B were 442.2, 295.2, 183.4, 165.3 and 143.0 mg g−1, respectively. Differences in the size, structure and properties of these dyes led to the difference of adsorption amounts. ΔG0 were all negative within the temperature range tested, which meant the adsorption processes were spontaneous nature. Moreover, the adsorption processes of targeted dyes, except auramine O, were exothermic and entropy decreasing. The regeneration studies indicated that the MMWCNTs showed high reusability and the removal efficiencies can be achieved above 75% after four consecutive cycles. For the adsorption mechanism, electrostatic interaction, hydrogen bonds, π-π interaction together with hydrophobic interaction, could coexist during the adsorption process.

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“…Metal–organic framework (MOF), assembled by inorganic clusters and organic ligands, attracted large attention in many applications, for example, catalysis, [ 8–10 ] energy engineering, [ 11,12 ] sensing, [ 13 ] and adsorptive separation. [ 14,15 ] In particular, thanks to regular pore structures, large specific surface areas, and tunable adsorption sites, MOFs have been applied in liquid‐phase adsorption and separation for dyes, [ 16–20 ] metal ions, [ 21,22 ] biological molecules, [ 23,24 ] and antibiotics. [ 25,26 ] Up to date, the potential of MOFs for adsorption andseparation of various dyes has been investigated, for example, methylene blue (MB), methyl orange (MO), and Congo red (CR).…”

Section: Introductionmentioning

confidence: 99%

Selective adsorption and separation of dyes from aqueous solution by a zirconium‐based porous framework material

Jia

Song

Zhao

2021

Applied Organom Chemis

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A water‐stable zirconium‐based metal–organic framework, MOF‐808, has been applied in selective adsorption and separation of the dyes (anionic fluorescein sodium [FS] and cationic rhodamine B [RhB]). Single‐component adsorption experiments indicate the superior adsorption of FS with a maximum adsorption capacity of 480.2 mg g−1, almost four times of the capacity for RhB. Further separation study shows that separation of these dyes can be achieved at a wide pH range of 3.5–8.5 and continuous separation is feasible in a simulated chromatographic column. Besides, this material can be well regenerated through acid washing method. Pore sieving effect is considered to be the key factor for the highly efficiency separation, and the host–guest interactions including H‐bond, π–π stacking, and coordination interactions are the main driven forces for the adsorption. Thus, this work demonstrates that MOF‐808 not only is a promising material for efficient separation of FS and RhB but also provides a new perspective for developing adsorbent with the help of distinct pore and chemical properties of MOFs.

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Construction of crystal defect sites in N-coordinated UiO-66 via mechanochemical in-situ N-doping strategy for highly selective adsorption of cationic dyes

Cited by 121 publications

References 54 publications

Synthesis, characterization and application of defective metal–organic frameworks: current status and perspectives

Synthesis, characterization and application of defective metal–organic frameworks: current status and perspectives

Effective sorptive removal of five cationic dyes from aqueous solutions by using magnetic multi-walled carbon nanotubes

Selective adsorption and separation of dyes from aqueous solution by a zirconium‐based porous framework material

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