Synthesis of MIL-101(Cr)/Sulfasalazine (Cr-TA@SSZ) hybrid and its use as a novel adsorbent for adsorptive removal of organic pollutants from wastewaters

Tourani, Somayeh; Behvandi, Alireza

doi:10.1007/s10934-022-01268-4

Cited by 5 publications

(7 citation statements)

References 56 publications

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“…Experimental adsorption isotherm data were obtained under the following conditions: temperature, 25 °C; pH, 8.3 (for GF-6) or 8.8 (for VPP); AmZPP5000, 10 mg; contact time, 30 min. The Langmuir, Freundlich and D–R (Dubinin–Radushkevich) isotherm models [ 53 ] were used to describe the adsorption processes of VPP and GF-6.…”

Section: Resultsmentioning

confidence: 99%

Anchoring of Polymer Loops on Enzyme-Immobilized Mesoporous ZIF-8 Enhances the Recognition Selectivity of Angiotensin-Converting Enzyme Inhibitory Peptides

et al. 2023

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Immobilized angiotensin-converting enzyme (ACE) is a promising material for the rapid screening of antihypertensive drugs, but the nonspecific adsorption is a serious problem in separation processes involving complex biological products. In this study, triblock copolymers with dopamine (DA) block as anchors and PEG block as the main body (DA-PEGx-DA) were attached to an immobilized ACE (ACE@mZIF-8/PDA, AmZP) surface via the “grafting to” strategy which endowed them with anti-nonspecific adsorption. The influence of DA-PEGx-DA chain length on nonspecific adsorption was confirmed. The excellent specificity and reusability of the obtained ACE@mZIF-8/PDA/DA-PEG5000-DA (AmZPP5000) was validated by screening two known ACE inhibitory peptides Val-Pro-Pro (VPP, competitive inhibitory peptides of ACE) and Gly-Met-Lys-Cys-Ala-Phe (GF-6, noncompetitive inhibitory peptides of ACE) from a mixture containing active and inactive compounds. These results demonstrate that anchored polymer loops are effective for high-recognition selectivity and AmZPP5000 is a promising compound for the efficient separation of ACE inhibitors in biological samples.

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Section: Resultsmentioning

confidence: 99%

Anchoring of Polymer Loops on Enzyme-Immobilized Mesoporous ZIF-8 Enhances the Recognition Selectivity of Angiotensin-Converting Enzyme Inhibitory Peptides

et al. 2023

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“…The peak at 380 and 450°C is related to separating structural water and various organic compounds from the framework structure. The signi cant weight loss between 352 and 555°C was attributed to the destruction of the framework structure [4]. Figure 5 also show that the starting point of decomposition of the structure of the Cr-TA@SSZ/GO composite is lower than Cr-TA@SSZ, which indicates the decrease in the strength of its network compared to the Cr-TA@SSZ.…”

Section: Samplementioning

confidence: 93%

“…2.1.4. Synthesis of MIL-101(Cr), MIL-101(Cr)/Sulfasalazine (Cr-TA/SSZ), and Cr-TA@SSZ/composting materials MIL-101(Cr) and MIL-101(Cr)/Sulfasalazine (Cr-TA/SSZ) was synthesized according to the method described in our previous works [4,24], where 2 g of Chromium nitrate (5 mmol), 0.83 g of TPA (5 mmol), 0.25 ml HF, and 25 ml ultrapure water were well mixed for 30 min followed by ultrasonication for 15 min. The mixture was then transferred into a 50 ml Te on-lined stainless steel autoclave, sealed, heated to 220 o C for eight h, and subsequently cooled to room temperature.…”

Section: Synthesis Of Rgo-cnts Compositementioning

confidence: 99%

“…Adsorption rate, thermodynamics, and adsorption kinetics experiments showed the superior performance of Cr-TA@SSZ compared to MIL-101, such that 28, 25, and 34% improved absorption was observed for TPA, BA, and p-tol, respectively [4].…”

Section: Introductionmentioning

confidence: 97%

“…We are surrounded by many petrochemical factories with a volume of pollution up to ten times the standard limit, which can be considered a severe threat to aquatic life and future generations. Therefore, creating a suitable mechanism with a leap approach towards novel technologies and using auxiliary adsorbents with better capabilities than activated carbon adsorbents, zeolites, etc., can be a useful help in this eld [4].…”

Section: Introductionmentioning

confidence: 99%

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Preparation of multi-walled carbon nanotubes (MWCNT) and graphene oxide (GO) incorporated Cr-TA@SSZ composite metal-organic frameworks and their use as adsorbents for adsorptive removal of TPA, BA, and p-tol from wastewaters

Tourani

2022

Preprint

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In the present work, multi-walled carbon nanotubes (CNT) and graphene oxide (GO) were incorporated with the MIL-101(Cr)/Sulfasalazine (Cr-TA@SSZ) composite. The composite MOFs have been synthesized by adding oxidized multi-walled carbon nanotube and GO with different ratios GO: CNT from (0:1, 10:5, 10:7, and 1:0) in situ during the synthesis of Cr-TA@SSZ by a hydrothermal approach. The resulting samples were characterized by X-ray diffraction (XRD), ASAP, Transmission electron microscopy (TEM), scanning electron microscopy (SEM), and thermal gravimetric analysis (TGA) analysis. The synthesized composite adsorbents were used for the adsorption of terephthalic acid (TPA), para-toluic acid (p-tol), and benzoic acid (BA). The results were compared with other adsorbents such as: GO, CNT, AC, Cu-BTC, Fe-BTC, MIL-101 (Cr), and MIL. -53(Al) and ZIF-8. Adsorption experiments indicated that the amount of TPA adsorption by Cr-TA@SSZ/CNT is higher than other composites but lower than some mother MOFs. The most important reasons include the larger molecule size, having two carboxyl groups, which leads to better interaction with micropores, and non-polarity of TPA. Adsorption experiments of BA and p-tol also demonstrated that Cr-TA@SSZ/CNT composite has the highest adsorption rate. Due to the improvement of the capillarity mechanism by increasing the diameter of pores, on the other hand, the polarity of BA and p-tol molecules, these two molecules were better adsorbed in Cr-TA@SSZ/CNT composite, which has both functional groups and larger pores. Furthermore, adsorption experiments using industrial wastewater from a TPA production plant showed that the highest purification efficiency belongs to Cr-TA@SSZ/CNT and Cr-TA@SSZ. Cr-TA@SSZ/CNT and Cr-TA@SSZ removed 41.6% and 40% COD from the concentrated phase (equivalent to 13670 and 13000 ppm) and removed 79.8% and 77.3% COD from the diluted phase (equal to 4390 and 4250 ppm) wastewater.

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Superior Adsorption Efficiency of MIL‐101 (Cr) and Nano‐MIL‐101 (Cr) in Anionic and Cationic Dye Removal from Aqueous Solution

Söğüt

2023

ChemistrySelect

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Metal‐organic frameworks (MOFs) as adsorbent have received considerable attention due to their remarkably high porosity, adjustable pore shape/size, and surface functionality. This study focusses on the adsorption performance and mechanism of two different typological and structural MOFs as superior adsorbents for the efficient removal of anionic and cationic dyes in an aqueous solution. MIL‐101(Cr) and nano‐MIL‐101(Cr) were successfully synthesized by the hydrothermal method using two different protocols and both materials were confirmed by XRD, TG‐DTA‐DTG, FTIR and SEM analyses. The adsorption kinetics and isotherms were determined from the experimental data obtained under optimal conditions. The adsorption kinetics suggests the adsorption process of Congo Red (CR) and Thioflavin T (TFT) onto MIL‐101 (Cr) and nano‐MIL‐101(Cr) conformed to the pseudo‐second‐order kinetic model. The Langmuir isotherm agrees well with the experimental data, and the adsorption capacities for MIL‐101 (Cr) and nano‐MIL‐101 (Cr) were found to be 986 mg g−1 (CR) and 863 mg g−1 (TFT), 1004 mg g−1 (TFT), respectively. The adsorption mechanism is to be related to π–π stacking, hydrogen bonding, pore filling, electrostatic interaction, and partial chemical interaction. This study demonstrates that MIL‐101 (Cr) and nano‐MIL‐101 (Cr) are promising reusable adsorbents with high adsorption capacity for removing dyes from aqueous solutions.

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Synthesis of MIL-101(Cr)/Sulfasalazine (Cr-TA@SSZ) hybrid and its use as a novel adsorbent for adsorptive removal of organic pollutants from wastewaters

Cited by 5 publications

References 56 publications

Anchoring of Polymer Loops on Enzyme-Immobilized Mesoporous ZIF-8 Enhances the Recognition Selectivity of Angiotensin-Converting Enzyme Inhibitory Peptides

Anchoring of Polymer Loops on Enzyme-Immobilized Mesoporous ZIF-8 Enhances the Recognition Selectivity of Angiotensin-Converting Enzyme Inhibitory Peptides

Preparation of multi-walled carbon nanotubes (MWCNT) and graphene oxide (GO) incorporated Cr-TA@SSZ composite metal-organic frameworks and their use as adsorbents for adsorptive removal of TPA, BA, and p-tol from wastewaters

Superior Adsorption Efficiency of MIL‐101 (Cr) and Nano‐MIL‐101 (Cr) in Anionic and Cationic Dye Removal from Aqueous Solution

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