Study on in-situ regeneration and reaction mechanism of meta-xylene saturated resins with dielectric barrier discharge

Xiao, Zehua; Hao, Chunjing; Yan, Zeyao; Qiu, Jian; Wang, Yifan; Liu, Kefu

doi:10.1016/j.cej.2018.07.045

Cited by 4 publications

(1 citation statement)

References 28 publications

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“…Plasma treatment is a fast interaction process, which may bring soft reaction conditions and reduce the reaction temperature. Furthermore, plasma modification processes usually involve only the topmost 10 nm surface without affecting the surface textural properties of adsorbents [22][23][24]. In plasma area, electrons are accelerated up to 25 eV by external electric field.…”

Section: Introductionmentioning

confidence: 99%

XAD-2 resin modified by nanosecond pulsed discharge to improve the adsorption capacity of polycyclic aromatic hydrocarbons

Wang

Yang

et al. 2020

J. Phys. D: Appl. Phys.

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In this study, nanosecond pulsed discharge plasma is employed to treat the XAD-2 resins in the purpose of improving its adsorption capacity of polycyclic aromatic hydrocarbons. The discharge images, waveforms of pulse voltage and discharge current, and optical emission spectra are measured to investigate the plasma characteristics. The scanning electron microscopy, N2 adsorption-desorption analysis, Fourier transform infrared spectrum, and x-ray photoelectron spectroscopy are employed to characterize the physical and chemical properties of raw and modified XAD-2 resins. It is found that the adsorption capacity of modified XAD-2 resins for polycyclic aromatic hydrocarbons is obviously improved. The adsorption capacity of XAD-2 resins modified by plasma increased by 70% in 10 min adsorption time under the optimal conditions of 20 min treatment time and artificial air. The reason for the improved adsorption capacity is attributed to the increase of specific surface area, the number of 28–33 nm micro-mesopores, and relative intensity of oxygen-containing functional groups (C=O, C–O, and COOH). The possible mechanism of plasma modification of XAD-2 resin is also proposed.

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Section: Introductionmentioning

confidence: 99%

XAD-2 resin modified by nanosecond pulsed discharge to improve the adsorption capacity of polycyclic aromatic hydrocarbons

Wang

Yang

et al. 2020

J. Phys. D: Appl. Phys.

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Enhancing the adsorption property of macroporous XAD‐2 resin by nanosecond‐pulsed discharge plasma modification

Yang

Wang

et al. 2020

Plasma Processes & Polymers

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In this study, a nanosecond‐pulsed discharge plasma is employed to modify the macroporous XAD‐2 resin to improve the adsorption performance of polycyclic aromatic hydrocarbons. After modification, XAD‐2‐20 resin shows great advantage on naphthalene (Nap) adsorption, whose adsorption capacity increased by 80.6% and 43.5% compared with the raw and XAD‐2‐30, respectively. The physiochemical properties of XAD‐2 resin are characterized by scanning electron microscope, N2 adsorption/desorption, X‐ray photoelectron spectroscopy, and Fourier‐transform infrared (FTIR) spectrum. The amount of micro‐mesoporous with a size of 2–3.5 nm are formed and many carbonyl groups (C═O) and ester or carboxylic groups (O–C═O) are introduced on the XAD‐2‐20 surface, and the value of O/C is increased from 14% to 53% compared with the raw resin.

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Ternary mixed nickel cobalt iron oxide nanorods as a high-performance asymmetric supercapacitor electrode

Faid

Ismail

2019

Materials Today Energy

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By utilizing a facile microwave process, ternary nickel cobalt iron oxide (NiCoFeO 4 ) nanorods were synthesized. A comprehensive investigation of morphological, structural and surface chemistry of the nanorods have been carried out. The electrochemical investigation of NiCoFeO 4 nanorods shows superior supercapacitive characteristics achieving a maximum specific capacitance (C sp ) of 1263 F/g at a current density of 1 A/g and cyclic stability retaining 97.2 % of capacitance after 2000 cycles. Asymmetric supercapacitor based on NiCoFeO 4 nanorods displays a high-power density of 10 kW/kg, energy density of 32 W h/ kg, coulombic efficiency of 95.5% and capacitance retention of 94% after 4000 cycles. The asymmetric supercapacitor is featuring an outstanding potential for practical supercapacitors due to high surface area nanorod morphology and mixed transition metal oxide synergetic effect.

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Study on in-situ regeneration and reaction mechanism of meta-xylene saturated resins with dielectric barrier discharge

Cited by 4 publications

References 28 publications

XAD-2 resin modified by nanosecond pulsed discharge to improve the adsorption capacity of polycyclic aromatic hydrocarbons

XAD-2 resin modified by nanosecond pulsed discharge to improve the adsorption capacity of polycyclic aromatic hydrocarbons

Enhancing the adsorption property of macroporous XAD‐2 resin by nanosecond‐pulsed discharge plasma modification

Ternary mixed nickel cobalt iron oxide nanorods as a high-performance asymmetric supercapacitor electrode

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