Facile preparation of PANI/MoOx nanowires decorated MXene film electrodes for electrochemical supercapacitors

Xie, Hangming; Ma, Shiyu

doi:10.1016/j.electacta.2023.142173

Cited by 19 publications

(12 citation statements)

References 50 publications

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“…The preparation of MXene was based on a previous study . Generally, 1.6 g of LiF and 20 mL of hydrochloric acid (9 M) were stirred in a Teflon vessel to obtain the etchant.…”

Section: Methodsmentioning

confidence: 99%

“…MXene is a two-dimensional (2D) layered metal carbide and metal nitride material consisting of ultrathin monolayers or multilayers of molecular sheets and functional groups (i.e., –F, −OH, and –O). , Due to rich surface functional groups, MXene can be easily utilized in the preparation of superhydrophobic sponges . Liu et al realized a superhydrophilic/underwater superoleophobic PU sponge via a simple impregnation method by decorating l -lysine-modified Ti 3 C 2 T x MXene onto the skeletons of the PU sponge, and the resulting PU sponge showed excellent performances for the separation of oil/water mixtures .…”

Section: Introductionmentioning

confidence: 99%

“…The preparation of MXene was based on a previous study. 19 Generally, 1.6 g of LiF and 20 mL of hydrochloric acid (9 M) were stirred in a Teflon vessel to obtain the etchant. Then, 1 g of Ti 3 AlC 2 powder was slowly introduced to the etchant that was maintained in an ice-cold water bath.…”

Section: ■ Introductionmentioning

confidence: 99%

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Facile Preparation of Photothermal Superhydrophobic Melamine Sponge Decorated with MXene and Lignin Particles for Efficient Oil/Water Separation, Fast Crude Oil Recovery, and Active Deicing

Wang,

Qiao,

et al. 2024

Langmuir

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Frequent oil spills and the discharge of oily wastewaters have caused a serious threat to the environment, ecosystems, and human beings. Herein, a photothermal and superhydrophobic melamine sponge (MS) decorated with MXene and lignin particles has been prepared for the separation of oil/water mixtures, the recovery of crude oils, and active deicing. The obtained superhydrophobic melamine sponge shows a water contact angle (WCA) of 152.3° and an oil contact angle of ∼0° and possesses good chemical stability, thermal stability, and mechanical durability in terms of being immersed in various liquids (i.e., corrosive solutions, organic solvents, and boiling water) and being abrased by sandpapers. This superhydrophobic MS displays a high oil adsorption capacity of CCl4, up to 91.6 times its own weight and a high separation efficiency of 99.4%. Furthermore, the maximum surface temperature of the superhydrophobic MS reaches 57.5 °C under sunlight irradiation (1.0 kW/m2) due to the excellent photothermal heating conversion performance of MXene and lignin particles. When exposed to sunlight, the superhydrophobic MS can quickly absorb viscous crude oils up to 72 times its own weight. Also, the WCA of the superhydrophobic MS remains above 146° after 50 icing/deicing cycles, showing excellent photothermal anti-icing properties. Thus, this study presents an easy and low-cost method for designing photothermal superhydrophobic melamine sponges and opens a new avenue to the applications of efficient oil/water separation, fast crude oil recovery, and active deicing.

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“…The preparation of MXene was based on a previous study . Generally, 1.6 g of LiF and 20 mL of hydrochloric acid (9 M) were stirred in a Teflon vessel to obtain the etchant.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Facile Preparation of Photothermal Superhydrophobic Melamine Sponge Decorated with MXene and Lignin Particles for Efficient Oil/Water Separation, Fast Crude Oil Recovery, and Active Deicing

Wang,

Qiao,

et al. 2024

Langmuir

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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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“…1,2 Currently, SCs suffer from a low energy density, 3 which can be improved by designing electrode materials. [4][5][6] Various electrode materials have been developed and used for SCs, such as transition metal oxides, conducting polymers, and carbon-based materials. 7,8 However, these materials as a single component have some drawbacks when used as electrode materials, which can be improved by combining with other components to prepare rationally designed composites.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2023

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Facile preparation of PANI/MoOx nanowires decorated MXene film electrodes for electrochemical supercapacitors

Cited by 19 publications

References 50 publications

Facile Preparation of Photothermal Superhydrophobic Melamine Sponge Decorated with MXene and Lignin Particles for Efficient Oil/Water Separation, Fast Crude Oil Recovery, and Active Deicing

Facile Preparation of Photothermal Superhydrophobic Melamine Sponge Decorated with MXene and Lignin Particles for Efficient Oil/Water Separation, Fast Crude Oil Recovery, and Active Deicing

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

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

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Facile preparation of PANI/MoOx nanowires decorated MXene film electrodes for electrochemical supercapacitors

Cited by 19 publications

References 50 publications

Facile Preparation of Photothermal Superhydrophobic Melamine Sponge Decorated with MXene and Lignin Particles for Efficient Oil/Water Separation, Fast Crude Oil Recovery, and Active Deicing

Facile Preparation of Photothermal Superhydrophobic Melamine Sponge Decorated with MXene and Lignin Particles for Efficient Oil/Water Separation, Fast Crude Oil Recovery, and Active Deicing

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

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

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Product

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

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