Oxadiazole-Functionalized Polyacrylonitrile Fiber as Selective Adsorbent for Mercury Ion

Huang, Liping; Tao, Minli

doi:10.1007/s12209-019-00205-y

Cited by 8 publications

(3 citation statements)

References 37 publications

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“…Previous reports revealed that the better the selective adsorption capacity, the less significant the interference from other ions on the removal rate. 42,43 Thus, the experimental results show that the selective adsorption of nitrate by the LDHs is not obvious. Notably, the influence of competitive anions follows the order of SO 4 2 > HCO 3 − > HPO 4 2− , which is probably due to the ion sieving effect and other factors such as interaction with the interlayer surface of the host layers.…”

Section: Resultsmentioning

confidence: 97%

Scalable fabrication of LDH-based adsorbent for the removal of nitrate with enhanced performance

Jiang

Liu³

et al. 2022

New J. Chem.

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Section: Resultsmentioning

confidence: 97%

Scalable fabrication of LDH-based adsorbent for the removal of nitrate with enhanced performance

Jiang

Liu³

et al. 2022

New J. Chem.

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“…A polyacrylonitrile fiber (PANF) is a low-cost material with a large surface and high mechanical strength and contains numerous nitrile groups, which can be easily transformed into various functionalized moieties. , To date, many kinds of functionalized polyacrylonitrile fibers have been prepared and employed to remove organic pollutants and to absorb and recognize metal. − However, there are few reports on the application of functionalized PANF on the removal of 2,4-DNP from the aqueous solutions, so it is of great significance and challenge to prepare efficient fiber absorbents for 2,4-DNP removal.…”

Section: Introductionmentioning

confidence: 99%

Selective and Adjustable Removal of Phenolic Compounds from Water by Biquaternary Ammonium Polyacrylonitrile Fibers

et al. 2021

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A series of biquaternary ammonium-functionalized fibers were developed to efficiently realize selective removal of phenolic compounds from water. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy were employed to determine the successful preparation of functionalized fibers. Scanning electron microscopy, X-ray diffraction (XRD) patterns, and elemental analysis were used to analyze the microstructure and composition. First, the adsorption result shows that a fiber with a three-carbon alkyl chain (PANBQAS‑3F) has the maximum adsorption capacity for 2,4-dinitrophenol (2,4-DNP) (406 mg g–1). Electrostatic attraction and π–π interaction are the main forces in adsorption. The adsorption kinetics studies display that PANBQAS‑3F can rapidly adsorb 2,4-DNP in 10 min and achieve equilibrium within 20 min. The adsorption process of 2,4-DNP by PANBQAS‑3F follows the Langmuir model, demonstrating that the process is more consistent with monolayer adsorption. What is more, the adsorbent PANBQAS‑3F can be reused after 10 adsorption/desorption cycles and still maintains an excellent removal rate (99%). Otherwise, PANBQAS‑3F was used in a continuous flow process and exhibited a removal rate of more than 96%, which certifies that PANBQAS‑3F is an excellent adsorbent and can be utilized in practice.

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“…In recent years, organic textile fibers, such as polypropylene fiber (PPF), polyacrylonitrile fiber (PANF), etc., have proved to be good carrier materials due to their stable nature and environmentally friendly properties. − The support material with simple and clear surface can be applied to control the number of interaction mechanisms to simplify the adsorption process. Polypropylene fiber (PPF) provides a way for this challenge with low cost, simple surface chemical structure, and simple production technology.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Adsorption for Parabens by an Amphiphilic Functionalized Polypropylene Fiber with Tunable Surface Microenvironment

Ran

Zhang

et al. 2020

ACS Omega

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A series of novel amphiphilic functionalized fibers with polarity tunable surface microenvironment were constructed by introducing hydrophilic polyamines and hydrophobic linear alkyl chain groups, aiming to selectively remove parabens from water. In addition, Fourier-transform infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy, etc. were employed to determine the successful preparation of amphiphilic functionalized fibers. The adsorption experimental data indicated that the amphiphilic fibers showed excellent selectivity for parabens. In the amphiphilic fibers, hydrogen bonding and hydrophobic interaction existing in one molecular unit can effectively act together to enhance the interaction between substrate and fibers. Kinetic studies illustrated that the adsorption process was a physical adsorption with chemical characteristics. The overall initial adsorption rate together with the stepwise adsorption rate was quantified, and it is inferred that the hydrophobic interaction plays a leading role in the first step of the adsorption process. Moreover, the Freundlich model well described the sorption process with a maximum adsorption of 138.4 mg/g. What's more, the fiber still keeps excellent adsorption capacity (>90%) even after 10 adsorption/desorption cycles, which certifies it is an excellent adsorbent and can be utilized to remove paraben in practice.

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Oxadiazole-Functionalized Polyacrylonitrile Fiber as Selective Adsorbent for Mercury Ion

Cited by 8 publications

References 37 publications

Scalable fabrication of LDH-based adsorbent for the removal of nitrate with enhanced performance

Scalable fabrication of LDH-based adsorbent for the removal of nitrate with enhanced performance

Selective and Adjustable Removal of Phenolic Compounds from Water by Biquaternary Ammonium Polyacrylonitrile Fibers

Synergistic Adsorption for Parabens by an Amphiphilic Functionalized Polypropylene Fiber with Tunable Surface Microenvironment

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