A facile pore size controlling strategy to construct rigid/flexible silica aerogels for super heat insulation and VOCs adsorption

Liu, Junyan; Liu, Jingxiao; Shi, Fei; Ma, Chuangchuang; Li, Tianci; Chen, Chaofan; Wasim, Muhammad; Zhu, Keya; Sun, Huijun; Tian, Ziwei

doi:10.1016/j.cej.2022.138196

Cited by 34 publications

(7 citation statements)

References 36 publications

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“…In our previous work, we revealed the relationship between the properties of silica aerogels and their microstructure, and that silica aerogels with high light transmission and superinsulation capabilities must have extremely high porosity and a highly developed pore structure, with most of their pore sizes distributed in the range of a few to several tens of nanometers. 26 The traditional silica aerogel with a similar porous structure is extremely fragile and prone to breakage during actual use, which greatly limits the practicality of silica aerogels with high transparency and super insulation capability. In this work, the prepared C−Si-aerogel exhibited extraordinary bending resistance (Figure 3a) and was able to return to its original state after repeated bending without causing structural damage (Movie S1, Supporting Information), which perfectly solved the problem of weak mechanical properties of the conventional silica aerogel and enabled the silica aerogel blocks with high light transmittance and superinsulation capability to be used as thermal insulation window materials.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…According to our previous work, high transparency, low thermal conductivity, and good mechanical properties of silica aerogel could not be achieved simultaneously only by modulating the pore structure and pore size of the aerogel. 26 Therefore, it is still challenging to prepare silica aerogels with high transparency, low thermal conductivity, and high mechanical properties. It has been reported that treatment of silica aerogels using chemical vapor deposition of hexamethyldisilazane can double the compression modulus without affecting the transparency, porosity, and density of silica aerogels.…”

Section: ■ Introductionmentioning

confidence: 99%

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Transparent and Bendable Silica Aerogels Integrated with Cs_xWO₃ Films for Photothermal Temperature Self-Regulating Systems

Liu,

Shi

et al. 2023

ACS Appl. Nano Mater.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

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Transparent and Bendable Silica Aerogels Integrated with Cs_xWO₃ Films for Photothermal Temperature Self-Regulating Systems

Liu,

Shi

et al. 2023

ACS Appl. Nano Mater.

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“…Figure 14. SEM images of activated carbon fiber felt (a) [98], activated carbon foam (b) [99], expanded natural graphite (c) [102], carbon nanotubes (d) [104], activated alumina (e) [107], zeolite 13X (f) [106], attapulgite (g) [113], expanded vermiculite (h) [114], diatomite (i) [115], silica gel (j) [126], silica aero-gels (k) [127], MCM-41 (l) [130], SBA-15 (m) [128], AlPO4-5 (n) [155], SAPO-34 (o) [159], VAPO-5 (p) [158], MIL-101 (q) [166], Aluminum fumarate (r) [167], UiO-67 (s) [168], and PCN-33 (t) [169]: Reprinted with permission from Ref. [98] Copyright © 2016 Elsevier Ltd. All rights reserved; with permission from Ref.…”

Section: Peer Review 21 Of 58mentioning

confidence: 99%

Section: Peer Review 21 Of 58mentioning

confidence: 99%

Salt Hydrate Adsorption Material-Based Thermochemical Energy Storage for Space Heating Application: A Review

et al. 2023

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Recent years have seen increasing attention to TCES technology owing to its potentially high energy density and suitability for long-duration storage with negligible loss, and it benefits the deployment of future net-zero energy systems. This paper provides a review of salt hydrate adsorption material-based TCES for space heating applications at ~150 °C. The incorporation of salt hydrates into a porous matrix to form composite materials provides the best avenue to overcome some challenges such as mass transport limitation and lower thermal conductivity. Therefore, a systematic classification of the host matrix is given, and the most promising host matrix, MIL-101(Cr)(MOFs), which is especially suitable for loading hygroscopic salt, is screened from the perspective of hydrothermal stability, mechanical strength, and water uptake. Higher salt content clogs pores and, conversely, reduces adsorption performance; thus, a balance between salt content and adsorption/desorption performance should be sought. MgCl2/rGOA is obtained with the highest salt loading of 97.3 wt.%, and the optimal adsorption capacity and energy density of 1.6 g·g−1 and 2225.71 kJ·kg−1, respectively. In general, larger pores approximately 8–10 nm inside the matrix are more favorable for salt dispersion. However, for some salts (MgSO4-based composites), a host matrix with smaller pores (2–3 nm) is beneficial for faster reaction kinetics. Water molecule migration behavior, and the phase transition path on the surface or interior of the composite particles, should be identified in the future. Moreover, it is essential to construct a micromechanical experimental model of the interface.

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Waste‐to‐Energy: Development of a Highly Efficient Keratin Enhanced Chitosan Bio‐Waste‐Derived Triboelectric Nanogenerator for Energy Harvesting and Real Applications

Motora,

Wu,

Jose

et al. 2024

Adv Funct Materials

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In this study, a novel and sustainable triboelectric material is successfully designed and developed by extracting keratin from recycled fur and combining it with chitosan to create a keratin/chitosan triboelectric nanogenerator (CK‐TENG) device. The device is designed for the simultaneous treatment of waste and the generation of green and clean energy, crucial for addressing global challenges. CK is prepared through a freeze‐drying method to overcome the weak mechanical properties of keratin and achieve a high surface contact area, which is important for triboelectric properties. The results showed that the output voltage is improved by 375% compared to the TENG without keratin, with values reaching 322 V under a 6 N. It produced a high power density of 14.4 W m−2 and excellent cyclic stability for more than 8000 cycles, which are crucial for practical applications. Further, the potential applications are also studied, and the results showed that it can turn on over 250 light‐emitting diodes (LEDs), display liquid crystal display (LCD), and charge capacitors under 6 N. Moreover, it is successful in harvesting energy from waste vibrations, acoustic energy, and as a shoe, and the electrical output is utilized to power electronic devices. Furthermore, the power density harvested by the device is higher than that of TENG devices made with keratin‐rich materials. Therefore, this study paves the way for the use of keratin‐based bio‐waste materials for clean and green energy production, which can play significant roles in applications such as the charging of electronic devices, biomedicine, sensors, and smart textiles.

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A facile pore size controlling strategy to construct rigid/flexible silica aerogels for super heat insulation and VOCs adsorption

Cited by 34 publications

References 36 publications

Transparent and Bendable Silica Aerogels Integrated with Cs_xWO₃ Films for Photothermal Temperature Self-Regulating Systems

Transparent and Bendable Silica Aerogels Integrated with Cs_xWO₃ Films for Photothermal Temperature Self-Regulating Systems

Salt Hydrate Adsorption Material-Based Thermochemical Energy Storage for Space Heating Application: A Review

Waste‐to‐Energy: Development of a Highly Efficient Keratin Enhanced Chitosan Bio‐Waste‐Derived Triboelectric Nanogenerator for Energy Harvesting and Real Applications

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A facile pore size controlling strategy to construct rigid/flexible silica aerogels for super heat insulation and VOCs adsorption

Cited by 34 publications

References 36 publications

Transparent and Bendable Silica Aerogels Integrated with CsxWO3 Films for Photothermal Temperature Self-Regulating Systems

Transparent and Bendable Silica Aerogels Integrated with CsxWO3 Films for Photothermal Temperature Self-Regulating Systems

Salt Hydrate Adsorption Material-Based Thermochemical Energy Storage for Space Heating Application: A Review

Waste‐to‐Energy: Development of a Highly Efficient Keratin Enhanced Chitosan Bio‐Waste‐Derived Triboelectric Nanogenerator for Energy Harvesting and Real Applications

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Product

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Transparent and Bendable Silica Aerogels Integrated with Cs_xWO₃ Films for Photothermal Temperature Self-Regulating Systems

Transparent and Bendable Silica Aerogels Integrated with Cs_xWO₃ Films for Photothermal Temperature Self-Regulating Systems