Air superhydrophilic-superoleophobic SiO2-based coatings for recoverable oil/water separation mesh with high flux and mechanical stability

Xiong, Wei; Li, Ling; Qiao, Fen; Chen, Junwu; Zhi, Chen; Zhou, Xuedong; Hu, Kaiwen; Zhao, Xiujian; Xie, Yi

doi:10.1016/j.jcis.2021.05.004

Cited by 68 publications

(24 citation statements)

References 35 publications

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“…32 In addition, SiO 2 nanoparticles showed typical peaks at 1082 and 804 cm −1 , which were attributed to Si−O−Si antisymmetric stretching vibration and Si−O symmetric stretching. 33 As can be seen, after spray-coating with SiO 2 nanoparticles, HPR20 showed higher intensity at 1082 and 804 cm −1 than untreated PR20, which demonstrated that SiO 2 has been attached to the PR20 film. In addition, the HPR20 exhibited a wider peak at 3400 cm −1 than other films, which may be attributed to the presence of −OH groups of SiO 2 nanoparticles and interaction between cellulose and SiO 2 nanoparticles.…”

Section: Resultsmentioning

confidence: 86%

“…Except for the pure cellulose film (PR0), the other films made from DWP and CRXP exhibited absorption peaks of lignin located around 1575–1600 and 1507 cm –1 , which corresponded to the aromatic skeletal vibrations . In addition, SiO 2 nanoparticles showed typical peaks at 1082 and 804 cm –1 , which were attributed to Si–O–Si antisymmetric stretching vibration and Si–O symmetric stretching . As can be seen, after spray-coating with SiO 2 nanoparticles, HPR20 showed higher intensity at 1082 and 804 cm –1 than untreated PR20, which demonstrated that SiO 2 has been attached to the PR20 film.…”

Section: Resultsmentioning

confidence: 99%

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Sustainable and Superhydrophobic Lignocellulose-Based Transparent Films with Efficient Light Management and Self-Cleaning

Song

et al. 2021

ACS Appl. Mater. Interfaces

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Light-management (LM) films that can regulate transmitted light are significant to diverse fields, such as optoelectronics and energy-efficient buildings. However, for conventional LM films made from petroleum-based polymers, the nonbiodegradability and complicated fabrication process remain a challenge. Herein, we prepare sustainable lignocellulose-based films with excellent light-management capability by facile dissolution and regeneration of wood pulp and the corncob residue from xylitol production (CRXP). The obtained films exhibit high transparency (78%), high haze (61%), and especially remarkable UV-blocking performance (99.94% for UVB and 98.04% for UVA). They achieve consistent indoor light distribution and UV radiation shielding by light management for the application of smart buildings. Furthermore, by spray-coating with SiO2 nanoparticles to construct hierarchical networks, the films are endowed with a superhydrophobic surface with a self-cleaning function to mitigate dust accumulation. Our work provides novel insights into the conversion of lignocellulosic waste to desirable and sustainable functional materials.

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Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Sustainable and Superhydrophobic Lignocellulose-Based Transparent Films with Efficient Light Management and Self-Cleaning

Song

et al. 2021

ACS Appl. Mater. Interfaces

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“…On the other side, superhydrophobic films and surfaces, characterized by a water contact angle (WCA) higher than 150° and sliding angle (SA) below 10°, are of particular interest and promising not only in academic areas but also in industrial applications. , The related applications include self-cleaning, oil–water separation, anticorrosion, antifouling, and antifrost/antiicing. , In general, a superhydrophobic surface depends on the synergistic contribution from surface chemical composition (i.e., low-surface-energy groups) and unique morphologies (e.g., micro–nanohierarchical structure and porous nanostructure) . It has been noticed that surface modification with hydrophobic species such as organic ligands ,− and hydrophobic matrix ,, enhanced the stability of perovskite-based nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

“…32,33 The related applications include self-cleaning, oil−water separation, anticorrosion, antifouling, and antifrost/antiicing. 34,35 In general, a superhydrophobic surface depends on the synergistic contribution from surface chemical composition (i.e., low-surface-energy groups) and unique morphologies (e.g., micro−nanohierarchical structure and porous nanostructure). 34 It has been noticed that surface modification with hydrophobic species such as organic ligands 10,36−39 and hydrophobic matrix 20,40,41 enhanced the stability of perovskite-based nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

CsPbBr₃@SiO₂ Core–Shell Nanoparticle Films for Superhydrophobic Coatings

Kareem

Dong

et al. 2021

ACS Appl. Nano Mater.

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Lead halide perovskite nanocrystals are extremely promising for photoelectronic application. However, maximizing their stability toward water, UV irradiation, or heat is yet a great challenge for the commercialization process. Herein, we develop a novel and facile surface functionalization approach that combined coating by the SiO 2 layer with surface modification by intrinsically hydrophobic methyl groups for the fabrication of superhydrophobic SiO 2 -coated CsPbBr 3 (referred as SH-CsPbBr 3 @SiO 2 ) nanoparticle films. The SiO 2 coating is realized by the hydrolysis of tetramethyl orthosilicate in the presence of ammonia. Hexamethyldisilazane is introduced for nanoparticle surface modification and thus offers the nanoparticle films' superhydrophobic performances. By optimizing the surface coating and modification, the static water contact angle and sliding angle on the representative SH-CsPbBr 3 @SiO 2 core−shell nanoparticle film can reach 160 and 3°, respectively. As a synergetic contribution from SiO 2 coating and modification by methyl groups, the as-fabricated green-emissive SH-CsPbBr 3 @SiO 2 films exhibit excellent water repellency, self-cleaning, and ultrahigh stability toward water, heat, and UV illumination. It is of great interest that the photoluminescence (PL) intensity of the SH-CsPbBr 3 @SiO 2 sample increases by 46% after 180 days under ambient conditions due to the phase transformation from CsPbBr 3 to CsPb 2 Br 5 and Pb(OH)Br. The resulting CsPb 2 Br 5 -based luminescent film shows excellent aqueous stability with remaining 75% of its initial PL intensity after soaking in water for 10 days. The white-light-emitting diode device fabricated using the green-emissive nanoparticles reports more than 20% external quantum efficiency (EQE), and no noticeable decrease in EQE is observed even after 2 weeks. This work elucidates a facile surface engineering strategy to prepare luminescent films with ultrahigh stability.

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“…With the increasing growth of industrialization and the global economy, the serious impact of water pollution on the ecosystem and human health has caused great concern. , Among different types of water pollution, organic chemical contaminants, including water insoluble oils/organics − and water-soluble dyes/nitrophenols, − have posed tremendous threats to water bodies and are detrimental to human health. In addition, polluted water is often contaminated by versatile pathogens that are harmful to humans because they can spread multiple communicable diseases.…”

Section: Introductionmentioning

confidence: 99%

Mussel-Inspired Ag NPs Immobilized on Melamine Sponge for Reduction of 4-Nitrophenol, Antibacterial Applications and Its Superhydrophobic Derivative for Oil–Water Separation

Chen

Liu

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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A functional material integrated with a variety of functions is highly desired in wastewater treatment. In this research, a mussel-inspired method of immobilizing silver nanoparticles on the skeleton of a melamine sponge is proposed and applied for water remediation. Ag NPs were reduced in situ and grown on a polydopamine-modified melamine sponge. The catalytic reduction of 4-nitrophenol (4-NP) in the presence of the obtained MS-PDA-Ag was evaluated, and the results demonstrated that the MS-PDA-Ag presented high catalytic reduction activity. In addition, the monolithic MS-PDA-Ag presents excellent reusability with no remarkable decrease in catalytic efficiency after multiple reuses. Owing to the immobilized Ag NPs, the MS-PDA-Ag can also effectively inhibit the growth of bacteria against both gram-positive and gram-negative species, making it possible for bacteria elimination in polluted water. To further explore the possibility of utilizing the MS-PDA-Ag for versatile applications, a superhydrophobic derivative (S-MS-PDA-Ag) was prepared by coating a low-surface-energy substance (octadecanethiol) on the surface of MS-PDA-Ag. The obtained S-MS-PDA-Ag presents the capacities of oil/organics adsorption and water repellence, which can separate the insoluble oil/organics from water. The melamine sponge immobilized with Ag NPs demonstrates prominent catalytic reduction of 4-NP, antibacterial activity and the superhydrophobic derivative presents the capacity of insoluble oil/organics separation from oil–water mixtures, exhibiting high potential in the remediation of polluted water.

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Air superhydrophilic-superoleophobic SiO2-based coatings for recoverable oil/water separation mesh with high flux and mechanical stability

Cited by 68 publications

References 35 publications

Sustainable and Superhydrophobic Lignocellulose-Based Transparent Films with Efficient Light Management and Self-Cleaning

Sustainable and Superhydrophobic Lignocellulose-Based Transparent Films with Efficient Light Management and Self-Cleaning

CsPbBr₃@SiO₂ Core–Shell Nanoparticle Films for Superhydrophobic Coatings

Mussel-Inspired Ag NPs Immobilized on Melamine Sponge for Reduction of 4-Nitrophenol, Antibacterial Applications and Its Superhydrophobic Derivative for Oil–Water Separation

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Air superhydrophilic-superoleophobic SiO2-based coatings for recoverable oil/water separation mesh with high flux and mechanical stability

Cited by 68 publications

References 35 publications

Sustainable and Superhydrophobic Lignocellulose-Based Transparent Films with Efficient Light Management and Self-Cleaning

Sustainable and Superhydrophobic Lignocellulose-Based Transparent Films with Efficient Light Management and Self-Cleaning

CsPbBr3@SiO2 Core–Shell Nanoparticle Films for Superhydrophobic Coatings

Mussel-Inspired Ag NPs Immobilized on Melamine Sponge for Reduction of 4-Nitrophenol, Antibacterial Applications and Its Superhydrophobic Derivative for Oil–Water Separation

Contact Info

Product

Resources

About

CsPbBr₃@SiO₂ Core–Shell Nanoparticle Films for Superhydrophobic Coatings