Facile fabrication of PANI/g-C<sub>3</sub>N<sub>4</sub>/MXene composites as electrode materials for supercapacitors

Xie, Hangming; Zhang, Guo; Wang, Mingkun; Ma, Salam; Kong, Zhe; He, Zhiwei

doi:10.1039/d3nj00943b

Cited by 8 publications

(1 citation statement)

References 49 publications

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“…The Ti 3 C 2 T x nanosheets were prepared according to previous studies. , Typically, 0.8 g of LiF was dissolved in 10 mL of HCl (9 mol/L) solution in a poly(tetrafluoroethylene) (PTFE) container and stirred for 30 min to obtain the etchant. Then, 0.5 g of Ti 3 AlC 2 powder was gradually added to the etchant, and the obtained mixture was stirred at 35 °C for 24 h. Afterward, a black precipitate was obtained by centrifuging MXene and MXene/Ti 3 AlC 2 blends at 3500 rpm for 3 min.…”

Section: Methodsmentioning

confidence: 99%

Photothermal, Magnetic, and Superhydrophobic PU Sponge Decorated with a Fe₃O₄/MXene/Lignin Composite for Efficient Oil/Water Separation

Guo,

Wang,

Qiao

et al. 2023

Langmuir

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Frequent oil spills and the discharge of industrial oily wastewaters have become a serious threat to the environment, ecosystem, and human beings. Herein, a photothermal, magnetic, and superhydrophobic PU sponge decorated with a Fe 3 O 4 /MXene/lignin composite (labeled as S−Fe 3 O 4 /MXene/lignin@ PU sponge) has been designed and prepared. The obtained superhydrophobic/ superoleophilic PU sponge possesses excellent chemical stability, thermal stability, and mechanical durability in terms of being immersed in corrosive solutions and organic solvents and boiling water and being abrased by sandpapers, respectively. The oil adsorption capacities of the S−Fe 3 O 4 / MXene/lignin@PU sponge for various organic liquids range from 29.1 to 70.3 g/g, and the oil adsorption capacity for CCl 4 can remain 69.6 g/g even after 15 cyclic adsorption tests. The separation efficiencies of the S−Fe 3 O 4 /MXene/ lignin@PU sponge for n-hexane and CCl 4 are higher than 98% in different environments (i.e., water, hot water, 1 mol/L NaOH, 1 mol/L NaCl, and 1 mol/L HCl). More importantly, the introduction of three light absorbers (i.e., Fe 3 O 4 , MXene, and lignin) into the S−Fe 3 O 4 /MXene/lignin@PU sponge shows a synergistic effect in the photothermal heat conversion performance, and the maximum surface temperature reaches 64.4 °C under sunlight irradiation (1.0 kW/m 2 ). The separation flux of the S−Fe 3 O 4 /MXene/lignin@PU sponge for viscous LT147 vacuum pump oil reaches 35,469 L m −2 h −1 under sunlight irradiation, showing an increase of 27.3% compared to that of oil adsorption processes without the photothermal effect. Thus, the rational design of superhydrophobic sponges by introducing proper photothermal heat absorbers provides new insights into facile and cost-effective preparation of sponges for efficient oil/water separation.

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Section: Methodsmentioning

confidence: 99%

Photothermal, Magnetic, and Superhydrophobic PU Sponge Decorated with a Fe₃O₄/MXene/Lignin Composite for Efficient Oil/Water Separation

Guo,

Wang,

Qiao

et al. 2023

Langmuir

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Facile Preparation of MXene Decorated PANI/Lignosulfonate Nanocomposite Film Electrodes for Electrochemical Supercapacitors

Wang,

Xie,

2024

ChemistrySelect

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MXenes are a large family of two‐dimensional transition‐metal carbides, nitrides, and carbonitrides with large surface area and metal conductivity. They have not been widely used as electrodes in the field of supercapacitors because of their low specific capacity, poor chemical stability, and tendency towards self‐stacking. Herein, a three‐component nanocomposite film electrode has been successfully achieved, consisting of MXene nanosheets, polyaniline (PANI), and lignosulfonate (LGS). The PANI‐LGS nanocomposite was prepared through the oxidative polymerization of PANI in the presence of LGS, and then MXene decorated PANI/LGS (labeled as MPL) nanocomposite films were facilely self‐assembled via a vacuum‐assisted filtration by using the dispersion. Compared with pure PANI and PANI‐LGS, the MPL nanocomposite film electrode possesses better conductivity, showing a high specific capacitance of 559 F/g at a scan rate of 5 mV/s and a capacity retention rate of 92.2 % after 1000 cycles at a current density of 10 A/g. This study demonstrates that the doping of LGS and MXene can significantly improve the electrochemical performance of PANI‐based composite materials. Thus, the convenient preparation and excellent electrochemical performance of MPL show great potentials in the application of high‐performance electrodes for supercapacitors.

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Unveiling the hybrid era: Advancement in electrode materials for the high-performance supercapacitor: A comprehensive review

Sahani,

Mahajan,

Han

2024

Journal of Energy Storage

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Facile fabrication of PANI/g-C₃N₄/MXene composites as electrode materials for supercapacitors

Abstract: Polyaniline (PANI) is a widely used conducting polymer for electrode materials because of good conductivity and electrochemical properties, while its poor stability during charging/discharging cycles limits its development and applications....

Cited by 8 publications

References 49 publications

Photothermal, Magnetic, and Superhydrophobic PU Sponge Decorated with a Fe₃O₄/MXene/Lignin Composite for Efficient Oil/Water Separation

Photothermal, Magnetic, and Superhydrophobic PU Sponge Decorated with a Fe₃O₄/MXene/Lignin Composite for Efficient Oil/Water Separation

Facile Preparation of MXene Decorated PANI/Lignosulfonate Nanocomposite Film Electrodes for Electrochemical Supercapacitors

Unveiling the hybrid era: Advancement in electrode materials for the high-performance supercapacitor: A comprehensive review

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Facile fabrication of PANI/g-C3N4/MXene composites as electrode materials for supercapacitors

Abstract: Polyaniline (PANI) is a widely used conducting polymer for electrode materials because of good conductivity and electrochemical properties, while its poor stability during charging/discharging cycles limits its development and applications....

Cited by 8 publications

References 49 publications

Photothermal, Magnetic, and Superhydrophobic PU Sponge Decorated with a Fe3O4/MXene/Lignin Composite for Efficient Oil/Water Separation

Photothermal, Magnetic, and Superhydrophobic PU Sponge Decorated with a Fe3O4/MXene/Lignin Composite for Efficient Oil/Water Separation

Facile Preparation of MXene Decorated PANI/Lignosulfonate Nanocomposite Film Electrodes for Electrochemical Supercapacitors

Unveiling the hybrid era: Advancement in electrode materials for the high-performance supercapacitor: A comprehensive review

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Facile fabrication of PANI/g-C₃N₄/MXene composites as electrode materials for supercapacitors

Photothermal, Magnetic, and Superhydrophobic PU Sponge Decorated with a Fe₃O₄/MXene/Lignin Composite for Efficient Oil/Water Separation

Photothermal, Magnetic, and Superhydrophobic PU Sponge Decorated with a Fe₃O₄/MXene/Lignin Composite for Efficient Oil/Water Separation