Post-modification of UiO-66-NH2 by resorcyl aldehyde for selective removal of Pb(II) in aqueous media

Fu, Longsheng; Wang, Shixing; Lin, Guiping; Zhang, Libo; Liu, Qiming; Zhou, Houhuang; Kang, Chenxia; Wan, Shuyun; Li, Hongwei; Wen, Sheng

doi:10.1016/j.jclepro.2019.05.043

Cited by 117 publications

(29 citation statements)

References 55 publications

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“…8,[42][43][44] For example, the post-modification of UiO-66-NH 2 by resorcyl aldehyde via an imine formation was reported for the selective adsorption of lead ions in aqueous media with a maximum adsorption capacity of ~190 mg g -1 . 42 UiO-66-NH 2 modified by thiourea showed good adsorption capacity of 117 mg g -1 and 232 mg g -1 , respectively, for the removal of Cd(II) and Pb(II), performing better than the parent UiO-66-NH 2 MOF. 43 The ASUiO-66 MOF (AS: allylsulfanyl) was used for the extraction of Pd(II), revealing a low saturation capacity of 45.4 mg g -1 .…”

Section: Introductionmentioning

confidence: 99%

A Pyridyltriazol Functionalized Zirconium Metal–Organic Framework for Selective and Highly Efficient Adsorption of Palladium

Daliran

Ghazagh-Miri

Oveisi

et al. 2020

ACS Appl. Mater. Interfaces

128

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This work reports the synthesis of pyridyltriazol-functionalized UiO-66 (UiO stands for University of Oslo), namely UiO-66-Pyta, from UiO-66-NH 2 through three post-synthetic modification (PSM) steps. The good performance of the material derives from the observation that partial formylation (~21% of -NHCHO groups) of H 2 BDC-NH 2 by DMF, as persistent impurity, takes place during synthesis of the UiO-66-NH 2 . Thus, to enhance material performance, firstly, the as-synthesized UiO-66-NH 2 was deformylated to give pure UiO-66-NH 2 . Subsequently, the pure UiO-66-NH 2 was converted to UiO-66-N 3 with nearly complete conversion (~95 %). Finally, the azide-alkyne[3+2]-cycloaddition reaction of 2-ethynylpyridine with the UiO-66-N 3 gave the UiO-66-Pyta. The porous MOF was then applied for the solidphase extraction of palladium ions from aqueous medium. Affecting parameters on extraction efficiency of Pd(II) ions were also investigated and optimized. Interestingly, UiO-66-Pyta exhibited selective and superior adsorption capacity for Pd(II) with maximum sorption capacity of 294.1 mg g -1 at acidic pH (4.5). The limit of detection (LOD) was found to be 1.9 µg L -1 . The estimated intra-day and inter-day precisions are 3.6% and 1.7%, respectively. Moreover, the adsorbent was regenerated and reused for 5 cycles without any significant change in the capacity and repeatability. The adsorption mechanism was described based on various techniques such as FT-IR, PXRD, SEM/EDS, ICP-AES, and XPS analyses as well as density functional theory (DFT) calculations. Notably, as a case study, the obtained UiO-66-Pyta after palladium adsorption, UiO-66-Pyta-Pd, was used as an efficient catalyst for Suzuki-Miyaura cross-coupling reaction.

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Section: Introductionmentioning

confidence: 99%

A Pyridyltriazol Functionalized Zirconium Metal–Organic Framework for Selective and Highly Efficient Adsorption of Palladium

Daliran

Ghazagh-Miri

Oveisi

et al. 2020

ACS Appl. Mater. Interfaces

128

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“…As shown in Figure 5c, the XRD patterns of MIL-101(Fe)/GO before and after Pb 2+ adsorption revealed a basic adsorption mechanism of ion exchange, in which Pb 2+ is transformed into oxides and hydroxides via bonding with the oxygen or hydroxy groups of MIL-101(Fe)/GO, respectively. A novel metal organic framework, UiO-66-resorcyl aldehyde (RSA), was prepared via the post-modification of UiO-66-NH 2 (UiO-66 with amino) with resorcyl aldehyde, for the efficient and selective separation and removal of Pb 2+ from aqueous media [84]. Results showed that Pb 2+ could be selectively adsorbed by UiO-66-RSA, with a maximum Pb 2+ adsorption amount of 189.8 mg g −1 at an optimal pH of 4.…”

Section: Binding With Other Functional Groupsmentioning

confidence: 99%

“…A novel metal organic framework, UiO-66–resorcyl aldehyde (RSA), was prepared via the post-modification of UiO-66–NH 2 (UiO-66 with amino) with resorcyl aldehyde, for the efficient and selective separation and removal of Pb 2+ from aqueous media [ 84 ]. Results showed that Pb 2+ could be selectively adsorbed by UiO-66–RSA, with a maximum Pb 2+ adsorption amount of 189.8 mg g −1 at an optimal pH of 4.…”

Section: Recent Studies On Mofs For the Removal Of Heavy Metal Ionmentioning

confidence: 99%

Recent Progress in Heavy Metal Ion Decontamination Based on Metal–Organic Frameworks

Chen

Bai

2020

Nanomaterials

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Heavy metals are inorganic pollutants which pose a serious threat to human and environmental safety, and their effective removal is becoming an increasingly urgent issue. Metal–organic frameworks (MOFs) are a novel group of crystalline porous materials, which have proven to be promising adsorbents because of their extremely high surface areas, optimizable pore volumes and pore size distributions. This study is a systematic review of the recent research on the removal of several major heavy metal ions by MOFs. Based on the different structures of MOFs, varying adsorption capacity can be achieved, ranging from tens to thousands of milligrams per gram. Many MOFs have shown a high selectivity for their target metal ions. The corresponding mechanisms involved in capturing metal ions are outlined and finally, the challenges and prospects for their practical application are discussed.

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“…[29][30][31][32] With the discovery of a series of water-stable MOFs, they are gradually used to remove toxic organic dyes in water. [33][34][35] At the same time, the optimized pore environment is also of great application value to the separation and purification of light hydrocarbon gas in the petrochemical industry. [36,37] For instance, C 2 H 2 produced from hydrocarbon pyrolysis is usually mixed with impurity gases such as CO 2 , but their similar physical properties make it difficult to separate by conventional separation techniques (such as cryogenic distillation, liquid adsorption, etc.)…”

Section: Introductionmentioning

confidence: 99%

“…between the framework and the dye molecule [29–32] . With the discovery of a series of water‐stable MOFs, they are gradually used to remove toxic organic dyes in water [33–35] . At the same time, the optimized pore environment is also of great application value to the separation and purification of light hydrocarbon gas in the petrochemical industry [36,37] .…”

Section: Introductionmentioning

confidence: 99%

Optimizing Fe‐Based Metal‐Organic Frameworks through Ligand Conformation Regulation for Efficient Dye Adsorption and C₂H₂/CO₂ Separation

Zhang

Fan

Jiang

et al. 2021

Chemistry A European J

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Regulating the structure of metal-organic frameworks (MOFs) by adjusting the ligands reasonably is expected to enhance the interaction of MOFs on special molecules/ ions, which has significant application value for the selective adsorption of guest molecules. Herein, two tricarboxylic ligands H 3 LÀ Cl and H 3 LÀ NH 2 were designed and synthesized based on the ligand H 3 TTCA by replacing part of the benzene rings with C=C bonds and modifying the chlorine and amino groups on the 4-position of the benzene ring. Two 3D Fe-MOFs (UPC-60-Cl and UPC-60-NH 2 ) with the new topology types were constructed. As the C=C bonds of the ligands have flexible torsion angles, UPC-60-Cl features three types of irregular 2D channels, while UPC-60-NH 2 has a cage with two types of windows on the surface. The synergistic effect of unique channels and modification of functional groups endows UPC-60-Cl and UPC-60-NH 2 with high adsorption capacity for organic dyes. Compound UPC-60-Cl shows high adsorption capacity for CV (147.2 mg g À 1 ), RHB (100.3 mg g À 1 ), and MO (220.9 mg g À 1 ), whereas UPC-60-NH 2 exhibits selective adsorption of MO (158.7 mg g À 1 ). Meanwhile, based on the diverse pore structure and modification of active sites, UPC-60-Cl and UPC-60-NH 2 show the selective separation of equimolar C 2 H 2 /CO 2 . Therefore, reasonable regulation of organic ligands plays a significant role in guiding the structure diversification and performance improvement of MOFs.

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Post-modification of UiO-66-NH2 by resorcyl aldehyde for selective removal of Pb(II) in aqueous media

Cited by 117 publications

References 55 publications

A Pyridyltriazol Functionalized Zirconium Metal–Organic Framework for Selective and Highly Efficient Adsorption of Palladium

A Pyridyltriazol Functionalized Zirconium Metal–Organic Framework for Selective and Highly Efficient Adsorption of Palladium

Recent Progress in Heavy Metal Ion Decontamination Based on Metal–Organic Frameworks

Optimizing Fe‐Based Metal‐Organic Frameworks through Ligand Conformation Regulation for Efficient Dye Adsorption and C₂H₂/CO₂ Separation

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Post-modification of UiO-66-NH2 by resorcyl aldehyde for selective removal of Pb(II) in aqueous media

Cited by 117 publications

References 55 publications

A Pyridyltriazol Functionalized Zirconium Metal–Organic Framework for Selective and Highly Efficient Adsorption of Palladium

A Pyridyltriazol Functionalized Zirconium Metal–Organic Framework for Selective and Highly Efficient Adsorption of Palladium

Recent Progress in Heavy Metal Ion Decontamination Based on Metal–Organic Frameworks

Optimizing Fe‐Based Metal‐Organic Frameworks through Ligand Conformation Regulation for Efficient Dye Adsorption and C2H2/CO2 Separation

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Product

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Optimizing Fe‐Based Metal‐Organic Frameworks through Ligand Conformation Regulation for Efficient Dye Adsorption and C₂H₂/CO₂ Separation