Construction of HLNPs/Fe3O4 based superhydrophobic coating with excellent abrasion resistance, UV resistance, flame retardation and oil absorbency

Huang, Jingda; Li, Mengmeng; Ren, Changying; Huang, Wentao; Miao, Yu; Wu, Qiang; Wang, Siqun

doi:10.1016/j.jece.2022.109046

Cited by 11 publications

(10 citation statements)

References 39 publications

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“…Figure 3 a shows the adsorption capacity of CACA-2 for various kinds of organic solvents (e.g., xylene, toluene, n-hexane, THF, DMF, and chloroform) and oils (e.g., pump oil, silicone oil, and olive oil), which are the common pollutants in water resources, with values in the range of 12 to 22 g·g −1 depending on the density and viscosity of the pollutants. Compared to previously reported porous foams or aerogels ( Table 1 ) [ 10 , 11 , 37 , 38 , 39 ], CACA exhibits similar adsorption capacity and better hydrophobicity, but it is prepared by a simpler method. The durability of the adsorbent and the collectability of the pollutants are also essential indicators for adsorbent material.…”

Section: Resultsmentioning

confidence: 99%

Bionic Aerogel with a Lotus Leaf-like Structure for Efficient Oil-Water Separation and Electromagnetic Interference Shielding

Liu

Feng

et al. 2023

Gels

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Increasing pollution from industrial wastewater containing oils or organic solvents poses a serious threat to both the environment and human health. Compared to complex chemical modifications, bionic aerogels with intrinsic hydrophobic properties exhibit better durability and are considered as ideal adsorbents for oil-water separation. However, the construction of biomimetic three-dimensional (3D) structures by simple methods is still a great challenge. Here, we prepared biomimetic superhydrophobic aerogels with lotus leaf-like structures by growing carbon coatings on Al2O3 nanorod-carbon nanotube hybrid backbones. Thanks to its multicomponent synergy and unique structure, this fascinating aerogel can be directly obtained through a simple conventional sol-gel and carbonization process. The aerogels exhibit excellent oil-water separation (22 g·g−1), recyclability (over 10 cycles) and dye adsorption properties (186.2 mg·g−1 for methylene blue). In addition, benefiting from the conductive porous structure, the aerogels also demonstrate outstanding electromagnetic interference (EMI) shielding capabilities (~40 dB in X-band). This work presents fresh insights for the preparation of multifunctional biomimetic aerogels.

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Section: Resultsmentioning

confidence: 99%

Bionic Aerogel with a Lotus Leaf-like Structure for Efficient Oil-Water Separation and Electromagnetic Interference Shielding

Liu

Feng

et al. 2023

Gels

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“…As we all know, pure wood is mainly composed of cellulose, hemicellulose, and lignin, and it contains rich hydroxyl groups which easily absorb moisture ( Figure 5 a), resulting in poor dimensional stability and even the production of mildew [ 31 ]. This was also the reason that researchers were committed to the hydrophobic modification of wood.…”

Section: Resultsmentioning

confidence: 99%

“…This was determined by the properties of the adhesive. It was found that, in our previous research [ 31 ], the soft surface (PDMS) could be deformed under the external force during the abrasion process to offset part of the impact and have a certain degree of protection on the microstructure, but the hard surface (epoxy resin) could not.…”

Section: Resultsmentioning

confidence: 99%

“…The UV resistance test was conducted by placing the samples in a UV aging test chamber at a distance of 20 cm from the light source, and the WCAs and SAs were measured each 1 h (or 12 h) until the average value of WCAs was <150°. There were two kinds of UV light used, one with 15 W of power and a wavelength of 265 nm, and the other with 1000 W of power and a wavelength of 356 nm [ 31 ].…”

Section: Eexperimental Sectionmentioning

confidence: 99%

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Construction of CNC@SiO2@PL Based Superhydrophobic Wood with Excellent Abrasion Resistance Based on Nanoindentation Analysis and Good UV Resistance

et al. 2023

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Construction of superhydrophobic woods with high abrasion resistance is still a major challenge, and micro analysis for abrasion resistance is scarce. To improve these issues, cellulose nanocrystals (CNC)@SiO2@phosphorylated lignin (PL) rods were prepared by SiO2 in situ generated on CNC, and then the modified lignin attached to the CNC@SiO2 rods surface. Subsequently, the superhydrophobic coating was constructed using hydrophobic modified CNC@SiO2@PL rods as the main structural substance by simple spraying or rolling them onto wood surfaces, and both polydimethylsiloxane (PDMS) and epoxy resin were used as the adhesives. The resulting coating had excellent superhydrophobic properties with a water contact angle (WCA) of 157.4° and a slide angle (SA) of 6°. The introduced PL could enhance ultraviolet (UV) resistance of the coating due to the presence of these groups that absorbed UV light in lignin. In the abrasion resistance test, compared with the SiO2/PL coating, the abrasion resistance of the one with CNC was much higher, suggesting that CNC could improve the abrasion resistance of the coating due to its high crystallinity and excellent mechanical strength. The coating with PDMS performed better than the one with epoxy resin because the soft surface could offset part of the external impact by deformation in the abrasion process. This was also consistent with the results of the nanoindentation (NI) tests. In view of the simple preparation and good performance, this superhydrophobic wood will have broad application potential.

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“…Although hydrophobic surface coatings are efficient and simple, they suffer from problems such as peeling and aging. 12,13 When the coating undergoes a local break in the ring, the phosphogypsum-based material will be completely immersed in water from this point onwards, destroying its hydrophobicity. The preparation of high-strength and high-wear-resistance surface hydrophobic coatings remains a challenge.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of reticular long-carbon-chain polysiloxane and its hydrophobic modification of phosphogypsum-based materials

Yang,

He,

et al. 2023

New J. Chem.

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Construction of HLNPs/Fe3O4 based superhydrophobic coating with excellent abrasion resistance, UV resistance, flame retardation and oil absorbency

Cited by 11 publications

References 39 publications

Bionic Aerogel with a Lotus Leaf-like Structure for Efficient Oil-Water Separation and Electromagnetic Interference Shielding

Bionic Aerogel with a Lotus Leaf-like Structure for Efficient Oil-Water Separation and Electromagnetic Interference Shielding

Construction of CNC@SiO2@PL Based Superhydrophobic Wood with Excellent Abrasion Resistance Based on Nanoindentation Analysis and Good UV Resistance

Synthesis of reticular long-carbon-chain polysiloxane and its hydrophobic modification of phosphogypsum-based materials

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