A Simple Polypyrrole/Polyvinylidene Fluoride Membrane with Hydrophobic and Self-Floating Ability for Solar Water Evaporation

Zhang, Shenfeng; Zheng, Jixin; Chen, Xin; Xü, Hongbo; Petrescu, Florian Ion Tiberiu; Ungureanu, Liviu Marian; Liu, Ying; Shi, Gang

doi:10.3390/nano12050859

Cited by 16 publications

(5 citation statements)

References 46 publications

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“…Finally, Figure 11 shows the FESEM image of PRG-40-32 grout (32% fly ash) [ 40 , 41 , 42 , 43 , 44 ]. It can be noticed that the fly ash does not mix effectively with the polymer binder due to the lack of binder availability to coat the large surface area created using fly ash.…”

Section: Resultsmentioning

confidence: 99%

Effect of Fly Ash on Mechanical Properties of Polymer Resin Grout

Fadiel,

Mohammed,

Rahman

et al. 2023

Biomimetics

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High-strength grout is specified to increase the bond between grout and bar in grouted connections and to ensure that the forces in the bars can be transferred to the surrounding material accordingly. Although polymer grout is fast setting and rapid in strength development, the use of polymer mortar in grouted connections is still limited because of the lack of information and familiarity practitioners have regarding the product. The goal of this work is to investigate the mechanical characteristics and performance of polyester grout containing fly ash that can be used as an infill material for grouted connections. This study focused on the composition of polymer grout, which typically consists of a binder, hardener, and filler. In this particular case, the binder was made of unsaturated polyester resin and hardener, while the filler was fine sand. The aim of the research was to investigate the potential benefits of incorporating fly ash as an additional filler in polymer resin grout and examine the mechanical properties of polymer resin grout. To this end, varying amounts of fly ash were added to the mix, ranging from 0% to 32% of the total filler by volume, with a fixed polymer content of 40%. The performance of the resulting grout was evaluated through flowability, compression, and splitting tensile tests. The results of the experiments showed that, at a fly ash volume of 28%, the combination of fine sand and fly ash led to an improvement in grout strength; specifically, at this volume of fly ash, the compressive and tensile strengths increased by 24.7% and 124%, respectively, compared to the control mix. However, beyond a fly ash volume of 28%, the mechanical properties of the grout started to deteriorate. Due its superior properties in terms of compressive and flexural strengths over all examined mixes, the PRG-40-28 mix is ideal for use in the infill material for mechanical connections.

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Section: Resultsmentioning

confidence: 99%

Effect of Fly Ash on Mechanical Properties of Polymer Resin Grout

Fadiel,

Mohammed,

Rahman

et al. 2023

Biomimetics

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“…Evaporation rate [kg m À2 h À1 , 1 sun] Energy conversion efficiency (1 sun) ppy/airlaid paper [210] 1.41 81.9% ppy/airlaid paper [212] 1.38 95.33% ppy/origamis paper [211] 2.12 91.5% ppy/filter paper [213] 1.54 ppy/PVDF membrane [225] 1.42 88.7%…”

Section: Methodsmentioning

confidence: 99%

Systematic Review of Material and Structural Design in Interfacial Solar Evaporators for Clean Water Production

et al. 2023

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Rational and sustainable utilization of resources is critical for the continuous development of this society. Solar energy, as one of the renewables, shows great potential in replacing part of the traditional energy supplies since it is clean, abundant, and easily convertible to thermal, electrical, and biological energies. Using solar energy as the green driving force, interfacial solar evaporation is a promising way for clean water production to alleviate global water shortage, taking advantage of its high evaporation efficiency (more than 80%) and strong adaptability toward various water sources and fields. In recent years, various kinds of materials with diverse designs have been synthesized and applied in interfacial solar evaporation for clean water production. Herein, recent progress in interfacial solar evaporators for clean water production is systematically reviewed, based on the photothermal conversion mechanisms of solar absorbers, including carbonous, semiconductor‐based, and plasmatic ones. Furthermore, key design factors and strategies in interfacial solar evaporators are reviewed and discussed from material and structural design point of view, such as water transport, thermal management, latent heat for water vaporization, and salt accumulation. Finally, some perspectives related to resolving existing problems in the field are given.

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“…Then, the Si template underwent hydrophobic treatment with trichloro(1H, 1H, 2H, 2H-perfluoro-octyl)silane to facilitate the subsequent stripping of the PDMS. After that, the mixture of PDMS prepolymer and curing agent was poured on the hydrophobic-treated Si template and cured at 68 °C for 3 h [ 25 , 26 ]. After curing, the PDMS was cooled to room temperature and peeled off to obtain a PDMS substrate with inverted micro-pyramids.…”

Section: Methodsmentioning

confidence: 99%

Spiropyran-Based Soft Substrate with SPR, Anti-Reflection and Anti-NRET for Enhanced Visualization/Fluorescence Dual Response to Metal Ions

Jin,

Petrescu,

Wang

et al. 2023

Materials

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The photoluminescence of modified spiropyran on solid surfaces is poor, and the fluorescence intensity of its MC form is weak, which affects its application in the field of sensing. In this work, a PMMA layer containing Au nanoparticles and a spiropyran monomolecular layer are coated on the surface of a PDMS substrate with inverted micro-pyramids successively by means of interface assembly and soft lithography, and the overall structure is similar to insect compound eyes. The anti-reflection effect of the bioinspired structure, the SPR (surface plasmon resonance) effect of the Au nanoparticles and the anti-NRET (non-radiation energy transfer) effect of the PMMA isolation layer raise the fluorescence enhancement factor of the composite substrate vs. the surface MC form of spiropyran to 5.06. In the process of metal ion detection, the composite substrate can achieve both colorimetric and fluorescence response, and the detection limit for Zn2+ can reach 0.281 μM. However, at the same time, the lack of the ability to recognize specific metal ions is expected to be further improved by the modification of spiropyran.

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A Simple Polypyrrole/Polyvinylidene Fluoride Membrane with Hydrophobic and Self-Floating Ability for Solar Water Evaporation

Cited by 16 publications

References 46 publications

Effect of Fly Ash on Mechanical Properties of Polymer Resin Grout

Effect of Fly Ash on Mechanical Properties of Polymer Resin Grout

Systematic Review of Material and Structural Design in Interfacial Solar Evaporators for Clean Water Production

Spiropyran-Based Soft Substrate with SPR, Anti-Reflection and Anti-NRET for Enhanced Visualization/Fluorescence Dual Response to Metal Ions

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