Electrospun poly(vinyl alcohol)/silica film for radiative cooling

Zhu, Hao; Wang, Yajie; Qu, Muchao; Pan, Yamin; Ge, Zheng; Dai, Kun; Huang, Mina; Alhadhrami, A.; Ibrahim, Mohamed M.; El‐Bahy, Zeinhom M.; Liu, Chuntai; Shen, Changyu; Liu, Xianhu

doi:10.1007/s42114-022-00529-9

Cited by 58 publications

(30 citation statements)

References 50 publications

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“…Figure 1 shows the maximum measured UV-visible transmittance for pristine PMMA as 87.4% at 600 nm wavelength, slightly lower than the 92% reference value for PMMA at 600 nm in other works [23,24,[41][42][43] , which is associated to heterogeneities due to the casting process and possible solvent or monomer residues [45,46] . On the other hand, the maximum transmittances on visible light for the nanocomposites films were close to pristine PMMA films.…”

Section: Uv-vis Transmittancementioning

confidence: 72%

“…Several studies on PMMA nanocomposites showed that their mechanical properties can be enhanced without impairing their remarkable optical properties [12,13,34] . Reinforcement resulted by adding silica nanoparticles to amorphous polymers stems mainly from molecular stiffening of polymer chains due to interactions with nanoparticles, which show larger surface area interacting with these chains, increasing their physical adsorption [40][41][42][43][44][45] . Light's wavelength is higher than particles nanometric size, therefore, these particles would not influence the optical properties of the nanocomposites [46] .…”

Section: Introductionmentioning

confidence: 99%

“…Polar OH groups on silica particles also interact with the dipoles on PMMA pendant groups through Van der Waals interactions. Silica particles have been widely studied in composite materials, showing versatile properties and enabling materials for various applications [43,44,47,48] .…”

Section: Introductionmentioning

confidence: 99%

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Poly(methyl methacrylate) and silica nanocomposites as new materials for polymeric optical devices

et al. 2022

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PMMA is one of the most used polymers for optical applications, due to its well-known optical properties and low-cost. PMMA/fumed silica nanocomposites were synthesized by in situ polymerization under sonication to produce optical materials using two types of silica, a PDMS surface-modified and an unmodified one. Silica content and sonication amplitude effects on nanocomposites properties were studied by factorial experimental designs. Nanocomposites retained the high transparency of pristine PMMA, especially at lower levels of silica and sonication. Rheological analysis indicated better dispersion of the unmodified silica in PMMA. Dispersed silica in the PMMA nanocomposites decreased the PMMA refractive index by 0.012, making PMMA/fumed silica suitable for the cladding layer of PMMAcore waveguides, resulting in the total reflectance phenomenon for light guiding. Therefore, PMMA/fumed silica nanocomposites provide promising materials for polymer optical devices, such as optical fibers and panels, optical sensors and biosensors, photonic platforms, daylighting, and multi-touchscreen displays.

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Section: Uv-vis Transmittancementioning

confidence: 72%

Section: Introductionmentioning

confidence: 99%

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Poly(methyl methacrylate) and silica nanocomposites as new materials for polymeric optical devices

et al. 2022

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“…At present, it has been widely used in the fields of microwave absorption materials, biomedical materials, sensors, batteries, photocatalytic, and so on. For example, PVA/silica films for daytime radiative cooling were made using a facile electrospinning method and exhibited excellent thermal stability and thermal insulation properties with a thermal conductivity as low as 0.09 Wm –1 K –1 . Tri-fluid electrospinning was used to successfully prepare a brand-new structural hybrid known as a tri-section Janus nanofiber, which was then shown to be helpful for delivering helicide, a weakly water-soluble Chinese herbal remedy .…”

Section: Introductionmentioning

confidence: 99%

“…For example, PVA/silica films for daytime radiative cooling were made using a facile electrospinning method and exhibited excellent thermal stability and thermal insulation properties with a thermal conductivity as low as 0.09 Wm −1 K −1 . 52 Tri-fluid electrospinning was used to successfully prepare a brand-new structural hybrid known as a tri-section Janus nanofiber, which was then shown to be helpful for delivering helicide, a weakly water-soluble Chinese herbal remedy. 53 The mixed membrane containing the active ingredient extract of seasoning soy sauce was prepared by electrospinning technology, which exhibited the expected functional performance in promoting rapid disintegration and soy sauce dissolution.…”

Section: ■ Introductionmentioning

confidence: 99%

Construction of an S-Scheme Ag₂MoO₄/ZnFe₂O₄ Nanofiber Heterojunction for Enhanced Photoelectrocatalytic Activity under Visible Light Irradiation

Zhao

Hao

et al. 2022

Langmuir

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The removal of organic dyes and pathogenic bacteria from contaminated water remains a significant challenge. In the present study, S-type heterojunction Ag2MoO4/ZnFe2O4 (AMO/ZFO) composite nanofibers were synthesized by electrospinning and co-precipitation and fabricated into photoanodes. It is found that the constructed S-type heterojunction of AMO/ZFO composites effectively inhibits the recombination of photogenerated carriers, in addition to the benefits of more exposed active sites and a greater specific surface area. When several properties are improved, AMO/ZFO composites exhibit excellent photoelectrocatalytic performance. The results demonstrate that under visible light irradiation, the photoelectrocatalytic degradation rate of AMO/ZFO-3 to methylene blue reached 76.2% within 50 min, and the killing rate of Salmonella was 83.6% within 80 min. The enhanced photoelectrocatalytic activity was due to the synergy of both electrochemical and photocatalytic effects. More importantly, after four testing cycles, AMO/ZFO-3 still has a better ability to kill pathogenic bacteria and degrade organic dyes due to its high stability. This work provides a feasible method for oxidizing organic dyes and pathogenic bacteria.

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A Highly Sensitive, Conductive, and Flexible Hydrogel Sponge as a Discriminable Multimodal Sensor for Deep‐Learning‐Assisted Gesture Language Recognition

Fu,

Yang,

Zhang

et al. 2024

Adv Funct Materials

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Flexible multimodal sensors have gained increasing popularity for applications in healthcare and extreme environment operations owing to their all‐around environmental perception and data acquisition capabilities. However, fabricating a magnetism‐mechanics‐humidity multimodal sensor that possesses high sensitivity without signal overlapping while in a facile methodology remains a great challenge. Herein, a highly sensitive, conductive, and flexible hydrogel sponge sensor with discriminable magnetism, mechanics, and humidity sensing capability is proposed, which shows stable pore size (19.30 µm) and satisfactory mechanical properties based on the synergistic hydrogen bonding among sodium alginate, poly(vinyl alcohol) and glycerol. The proposed sensors can not only display favorable humidity sensing ability with rapid response/recovery time (2.5/4 s) but also possess enhanced sensitivities (a gauge factor of 0.46 T−1 for magnetic field, −1.16 kPa−1 for pressure), superior stability and durability (over 8000 cycles). Benefiting from the separated capacitive and resistive response signals, the sensors can precisely distinguish the magnetic, mechanical, and humidity stimuli without cross‐talk. Further, the sensor arrays assisted by the deep learning algorithm are developed to realize gesture language recognition with a high accuracy of 99.17%. It can be believed that this high‐performance sensor will have good prospects in future soft electronics and human‐machine interaction systems.

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Electrospun poly(vinyl alcohol)/silica film for radiative cooling

Cited by 58 publications

References 50 publications

Poly(methyl methacrylate) and silica nanocomposites as new materials for polymeric optical devices

Poly(methyl methacrylate) and silica nanocomposites as new materials for polymeric optical devices

Construction of an S-Scheme Ag₂MoO₄/ZnFe₂O₄ Nanofiber Heterojunction for Enhanced Photoelectrocatalytic Activity under Visible Light Irradiation

A Highly Sensitive, Conductive, and Flexible Hydrogel Sponge as a Discriminable Multimodal Sensor for Deep‐Learning‐Assisted Gesture Language Recognition

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Electrospun poly(vinyl alcohol)/silica film for radiative cooling

Cited by 58 publications

References 50 publications

Poly(methyl methacrylate) and silica nanocomposites as new materials for polymeric optical devices

Poly(methyl methacrylate) and silica nanocomposites as new materials for polymeric optical devices

Construction of an S-Scheme Ag2MoO4/ZnFe2O4 Nanofiber Heterojunction for Enhanced Photoelectrocatalytic Activity under Visible Light Irradiation

A Highly Sensitive, Conductive, and Flexible Hydrogel Sponge as a Discriminable Multimodal Sensor for Deep‐Learning‐Assisted Gesture Language Recognition

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Product

Resources

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Construction of an S-Scheme Ag₂MoO₄/ZnFe₂O₄ Nanofiber Heterojunction for Enhanced Photoelectrocatalytic Activity under Visible Light Irradiation