Highly rapid and efficient removal of heavy metals, heavy rare earth elements, and phenolic compounds using EDTA-cross-linked MXene polymer composite: Adsorption characteristics and mechanisms

Bukhari, Aysha; Ijaz, Irfan; Gilani, Ezaz; Nazir, Ammara; Zain, Hina; shaheen, Attia; Hussain, Sajjad; Imtiaz, Ayesha

doi:10.1016/j.cherd.2023.04.048

Cited by 12 publications

(5 citation statements)

References 75 publications

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“…The FT-IR results of NSAC-ZIF-67@C were analyzed before and after the adsorption of HQ (Figure S3d). The band at 3450 cm –1 was ascribed to the – OH stretching, and the peaks at around 620 cm –1 were assigned to SO. , After the adsorption of HQ, the outcomes of FT-IR indicated that the peaks (3149, 1392, 1638, 1035 cm –1 ) of NSAC-ZIF-67@C belong to −NH 2 , C–N, CC and phenols (C–O) shifted to the wavenumber region peaks (3128, 1384, 1626, 1027 cm –1 ) of NSAC-ZIF-67@C-HQ . These phenomena may be mainly responsible for the π–π interactions between the aromatic ring of HQ and the NSAC-ZIF-67@C, hydrogen-bonding formation between the –NH 2 groups and phenol hydroxyl groups …”

Section: Resultsmentioning

confidence: 99%

“…12,58 After the adsorption of HQ, the outcomes of FT-IR indicated that the peaks (3149, 1392, 1638, 1035 cm −1 ) of NSAC-ZIF-67@C belong to −NH 2 , C−N, C�C and phenols (C−O) shifted to the wavenumber region peaks (3128, 1384, 1626, 1027 cm −1 ) of NSAC-ZIF-67@C-HQ. 11 These phenomena may be mainly responsible for the π−π interactions between the aromatic ring of HQ and the NSAC-ZIF-67@C, hydrogen-bonding formation between the −NH 2 groups and phenol hydroxyl groups. 1 The chemical functional group composition of the NSAC-ZIF-67@C (before and after adsorption of HQ) was determined by the XPS spectra, and the results are shown in Figure S4a and Table S3.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The development of adsorbents with high efficiency and excellent adsorption performance for the HQ is necessary. Various adsorbents have been considered, including activated carbon, functionalized graphene, MXene, polyethylenimine, and metal–organic framework (MOF) materials. ,− Especially, biomass-derived activated carbon has been conceived as potential candidates owing to its abundant resources, renewability, and eco-friendliness . Generally, the specific surface area and functional groups of the adsorbent play a crucial role in the adsorption performance of HQ.…”

Section: Introductionmentioning

confidence: 99%

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ZIF-67 and Biomass-Derived N, S-Codoped Activated Carbon Composite Derivative for High-Effective Removal of Hydroquinone from Water

Yang,

Wang,

et al. 2024

ACS Appl. Mater. Interfaces

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Hydroquinone (HQ) in wastewater is of great concern, as it is harmful to human health and threatens the ecological environment. However, the existing adsorbents have low adsorption capacity for HQ. To improve the removal of HQ, N,Scodoped activated carbon-ZIF-67 (NSAC-ZIF-67@C) was synthesized in this study by in situ growth of ZIF-67 on N,S-codoped activated carbon (NSAC) and carbonization. The influence of pH, contact time, and initial concentration on the adsorption behaviors of NSAC-ZIF-67@C on HQ were investigated. Owing to the synergistic effect of abundant active sites and well-developed pore structure, the NSAC-ZIF-67@C achieved a prominent adsorption capacity of 962 mg•g −1 and can still retain high adsorption performance after 5 cycles for HQ, which is superior to that of reported other adsorbents. HQ adsorption follows the pseudosecond-order kinetics model (R 2 = 0.99999) and the Freundlich isotherm model. X-ray photoelectron spectroscopy (XPS) analysis before and after adsorption as well as density functional theory (DFT) calculation results showed that pyridinic-N-termini were conducive to the π−π interactions and hydrogen-bonding interactions. Therefore, the adsorption mechanisms of NSAC-ZIF-67@C on HQ involve pore filling, electrostatic attraction, π−π interaction, and hydrogen bonding. This study is expected to provide a reference for designing highly effective adsorbents for wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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ZIF-67 and Biomass-Derived N, S-Codoped Activated Carbon Composite Derivative for High-Effective Removal of Hydroquinone from Water

Yang,

Wang,

et al. 2024

ACS Appl. Mater. Interfaces

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Section: Analysesmentioning

confidence: 99%

“…The combination of small size and porosity in the WO2I2/P1HP nanocomposite enhances its surface area and promotes more efficient interactions with target analytes, such as heavy metal ions. The presence of the inorganic WO2I2 within the polymer matrix contributes to the overall structural integrity of the nanocomposite and plays a crucial role in its sensing capabilities [18,27]. The unique morphological properties of the WO2I2/P1HP nanocomposite, as revealed by SEM, highlight its potential for various applications, including heavy metal sensing and environmental remediation.…”

Section: Analysesmentioning

confidence: 99%

A Highly Promising Flower-Shaped WO2I2/Poly(1H-Pyrrole) Nanocomposite Thin Film as a Potentiometric Sensor for the Detection of Cd2+ Ions in Water

Alnuwaiser,

Rabia

2023

J. Compos. Sci.

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Because of the expensive nature of sensors used to detect heavy metals and the severe health risks associated with certain heavy metals, there is a pressing need to develop cost-effective materials that are highly efficient in detecting these metals. A flower-shaped WO2I2-Poly(1H-pyrrole) (WO2I2/P1HP) nanocomposite thin film is synthesized through the oxidation of 1-H pyrrole using iodine and subsequent reaction with Na2WO4. The nanocomposite exhibits a distinctive flower-like morphology with an average size of 20 nm. Elemental composition and chemical structure are confirmed via X-ray photoelectron spectroscopy (XPS) analyses, while X-Ray diffraction analysis (XRD) and Fourier-transform infrared spectroscopy (FTIR) analyses provide further evidence of crystalline peaks and functional groups within the composite. The potential of the nanocomposite as a sensor for Cd2+ ions is determined using two approaches: simple potentiometric (two-electrode cell) and cyclic voltammetric (three-electrode cell) methods, over a concentration range spanning from 10−6 to 10−1 M. From the simple potentiometric method, the sensor showcases strong sensing capabilities in the concentration span of 10−4 to 10−1 M, displaying a Nernstian slope of 29.7 mV/decade. With a detection limit of 5 × 10−5 M, the sensor proves adept at precise and sensitive detection of low Cd2+ ion concentrations. While using the cyclic voltammetric method, the sensor’s selectivity for Cd2+ ions, demonstrated through cyclic voltammetry, reveals a sensitivity of 1.0 × 10−5 A/M and the ability to distinguish Cd2+ ions from other ions like Zn2+, Ni2+, Ca2+, K+, Al3+, and Mg2+. This selectivity underscores its utility in complex sample matrices and diverse environments. Furthermore, the sensor’s successful detection of Cd2+ ions from real samples solidifies its practical viability. Its reliable performance in real-world scenarios positions it as a valuable tool for Cd2+ ion detection across industries and environmental monitoring applications. These findings advocate for its utilization in commercial settings, highlighting its significance in Cd2+ ion detection.

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Potential application of 2D nano-layered MXene in analysing and remediating endocrine disruptor compounds and heavy metals in water

Rozaini,

Khoo,

Abdah

et al. 2024

Environ Geochem Health

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Highly rapid and efficient removal of heavy metals, heavy rare earth elements, and phenolic compounds using EDTA-cross-linked MXene polymer composite: Adsorption characteristics and mechanisms

Cited by 12 publications

References 75 publications

ZIF-67 and Biomass-Derived N, S-Codoped Activated Carbon Composite Derivative for High-Effective Removal of Hydroquinone from Water

ZIF-67 and Biomass-Derived N, S-Codoped Activated Carbon Composite Derivative for High-Effective Removal of Hydroquinone from Water

A Highly Promising Flower-Shaped WO2I2/Poly(1H-Pyrrole) Nanocomposite Thin Film as a Potentiometric Sensor for the Detection of Cd2+ Ions in Water

Potential application of 2D nano-layered MXene in analysing and remediating endocrine disruptor compounds and heavy metals in water

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