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Superamphiphobic coatings have widespread application potential in various fields, e.g., anti-icing, anti-corrosion and self-cleaning, but are seriously limited by poor mechanical stability. Here, mechanically stable superamphiphobic coatings were fabricated by spraying the suspension composed of phase-separated silicone-modified polyester (SPET) adhesive microspheres with fluorinated silica (FD-POS@SiO2) on them. The effects of non-solvent and SPET adhesive contents on the superamphiphobicity and mechanical stability of the coatings were studied. Due to the phase separation of SPET and the FD-POS@SiO2 nanoparticles, the coatings present a multi-scale micro-/nanostructure. Combined with the FD-POS@SiO2 nanoparticles of low surface energy, the coatings present outstanding static and dynamic superamphiphobicity. Meanwhile, the coatings present outstanding mechanical stability due to the adhesion effect of SPET. In addition, the coatings present outstanding chemical and thermal stability. Moreover, the coatings can obviously delay the water freezing time and decrease the icing adhesion strength. We trust that the superamphiphobic coatings have widespread application potential in the anti-icing field. [ABSTRACT FROM AUTHOR]

Superamphiphobic coatings have garnered great attention owing to their widespread application potential in self-cleaning, anti-corrosion, anti-fouling and anti-icing, etc. However, environmentally harmful material, complicated preparation methods, and poor mechanical stability significantly hamper their applications. Here, we report preparation of waterborne durable superamphiphobic coatings based on palygorskite. The coatings were prepared by in turn spray-coating a waterborne polyurethane adhesive solution (the primer layer) and a homogenous aqueous suspension of siloxane-modified palygorskite (the top layer) onto substrates. The influences of concentration palygorskite, silane and catalyst on morphology and wettability of the coatings were studied. Because of microstructure of palygorskite and low surface energy of siloxanes, the coatings have a re-entrant hierarchical micro-/nanostructure with low surface energy. Consequently, the coatings exhibit excellent superamphiphobicity and chemical stability. Moreover, the coatings show good mechanical stability because the siloxane-modified palygorskite top layer was firmly affixed on the substrate by the adhesive layer. In addition, the coatings exhibit good anti-fouling and self-cleaning properties. This study demonstrates a new method for the preparation of superamphiphobic coatings and a new application of natural fibrous clay minerals like palygorskite. [Display omitted] • Waterborne superamphiphobic coatings are prepared using palygorskite • The coatings exhibit excellent superamphiphobicity, mechanical and chemical stability • The coatings show excellent anti-fouling and self-cleaning properties • The fabrication process is simple, environmental friendly and cost-efficient [ABSTRACT FROM AUTHOR]

Superoleophilic graphene–nickel foam (PDMS–G–NF), which was prepared by coating graphene nanosheets onto nickel foam followed by surface modification with polydimethylsiloxane (PDMS), was used as porous supporting material to prepare form-stable phase change materials (PCMs) composites. Owing to the strong hydrophobic and superhydrophilic wettability of PDMS–G–NF, PCMs can be absorbed spontaneously into PDMS–G–NF and can stay stable without leakage even over their melting points. The incorporation of PCMs into PDMS–G–NF does not change the crystal structure but lowers the crystallinity size of PCMs in the composites, which is confirmed by X-ray powder diffraction (XRD) analysis. The latent heat of PDMS–G–NF/PCM composites was measured in the range of 42.3–123.41 kJ kg −1 . Taking advantages of the simple process and good stability the PDMS–G–NF should be ideal candidates as an alternative to traditional PCMs, which may have great potentials for renewable energy saving applications. [ABSTRACT FROM AUTHOR]

With the rapid development of industrial growth, the issue of severe water pollution risen from oily waste water, dye waste water, and frequent oil spill accidents has become a bottleneck for hindering the global sustainable development. Herein, we report the facile fabrication of a superhydrophilic/underwater superoleophobic multifunctional separation membrane by vacuum assisted filtration technology using palygorskite (Pal) as raw material. The Pal coated membrane show excellent thermal， chemical stability, and mechanical strength with 300 bending times. As expected, the membrane has excellent separation performance, e.g. it exhibits an enhanced permeation flux of 477.7 ± 5.0 L m−2 h−1 bar−1 and a high separation efficiency of up to 99.6% ± 0.05%. In addition, it can separate different oil-in-water emulsions in harsh environments. Interestingly, the as-prepared membrane can also remove organic dyes in the water phase during the separation process, making it multifunctional and promising membrane for water treatment, by combination with its simple and cost-efficient manufacture, excellent physicochemical properties. More importantly, our work may also open a new way for high-increment utilization of palygorskite mineral with a "green" method. Unlabelled Image • Underwater superoleophobic Pal coated membrane was prepared. • Pal coated membrane can be used for oil/water separation with high efficiency. • It was a multifunctional water treatment membrane. • It has advantages of environmental friendly, cost-efficient, simple process. [ABSTRACT FROM AUTHOR]

Super anti-fouling coatings are of great interest because of their good liquid repellency and anti-fouling performance. However, it is challenging to prepare durable and transparent super anti-fouling coatings, especially via simple approaches. Here, we report on the preparation of durable and transparent super anti-wetting coatings with excellent liquid repellency and anti-fouling performance by hydrolytic condensation of 1H,1H,2H,2H-perfluorodecyltrimethoxysilane and tetraethoxysilane followed by dip coating and heat treatment. The fluorinated polysiloxane (fluoroPOS) super anti-wetting coatings were characterized by various analytical techniques. The wettability, anti-fouling performance, stability and applicability of the coatings were systematically studied. These super anti-wetting coatings are very smooth with a high optical transmittance of 103% at 400 nm compared with the bare glass slide, showing anti-reflective performance. The fluoroPOS coatings feature (i) excellent repellency towards various liquids such as water, alkanes, daily encountered liquids and even hot liquids; (ii) excellent anti-fouling performance against marker pens, paints etc.; (iii) good mechanical, chemical and thermal stabilities; (iv) good applicability onto various substrates. Therefore, fluoroPOS super anti-wetting coatings may find applications in many fields (e.g., industrial facilities, architectures, and transportation), as the method is simple and the comprehensive properties are excellent. [ABSTRACT FROM AUTHOR]

Efficient removal of pollutants in the atmosphere is of great significance to human health and environmental restoration. Herein, we report the preparation of a self-supporting conjugated microporous polymers (CMPs) membrane (SS-CMPs-M) synthesized by Sonogashira-Hagihara (S–H) cross-coupling reaction using KBr tables as a template. The intrinsic hydrophobic chemical composition made it good hydrophobicity and lipophilicity, e.g., the water contact angles (WCA) for SS-CMPs-M were measured to be 113°. The aromatic building blocks of CMPs make SS-CMPs-M exceptionally stable physicochemical properties, i.e., the membrane exists stably below 300 °C, and they were insoluble in organic solvents. Additionally, the as-resulted SS-CMPs-M-1 which also presents mesoporous architecture shows effectively captures performance for particulate matter (PM) with different particle sizes in the air, the removal efficiency of PM 2.5 and PM 10 are 99.7% and 99.9%, respectively. For volatile organic compounds (VOCs) vapor in the air, the SS-CMPs-M-1 shows an excellent purification effect, the removal efficiency of formaldehyde in the simulated air is above 97%, and the AQI value of the filtered gas (>500) is reduced to 50. Taking advantage of its simple and scalable manufacture, the SS-CMPs-M-1 may have great potential as an advanced membrane for the separation and elimination of PM in different environments. [Display omitted] • Membrane shows extremely high PM removal efficiency (up to 99.7% in our condition). • Membrane shows an excellent adsorption effect for volatile organic compounds vapor. • Membrane use KBr tablet as template was prepared by a simple and scalable method. • Membrane is self-supporting and has a mesoporous structure with rich porosity. • Membrane has good physical and chemical stability and thermal stability. [ABSTRACT FROM AUTHOR]