Mechanically robust, thermally insulating and photo-responsive aerogels designed from sol-gel electrospun PVP-TiO2 nanofibers

Rahmanian, Vahid; Pirzada, Tahira; Barbieri, Eduardo; Iftikhar, Sherafghan; Li, Fanxing; Khan, Saad A.

doi:10.1016/j.apmt.2023.101784

Cited by 9 publications

(10 citation statements)

References 64 publications

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“…These experiments aimed to assess the ability of FR-SACAs to effectively insulate against high-temperature environments and maintain low surface temperatures, crucial for thermal protection applications. [3,20,22,24,[54][55][56][57][58][59][60][61] k) Comparison of the fire resistance of FR-SACAs with other types of aerogels. [3,20,22,24,[55][56][57]60,61].…”

Section: Thermal Insulation and Fire Resistance Of Fr-sacas Under Ext...mentioning

confidence: 99%

“…On the other hand, alumina aerogels show significantly improved fire resistance and can endure flame temperatures of 1300 °C. [3,20,22,24,[55][56][57]60,61] Combining the thermal insulation and fire resistance properties of these aerogel materials, FR-SACAs emerge as the leading option. These findings highlight the favorable position of FR-SACAs in terms of thermal insulation performance and fire resistance compared to other aerogel materials.…”

Section: Thermal Insulation and Fire Resistance Of Fr-sacas Under Ext...mentioning

confidence: 99%

“…[3,20,22,24,[54][55][56][57][58][59][60][61] k) Comparison of the fire resistance of FR-SACAs with other types of aerogels. [3,20,22,24,[55][56][57]60,61].…”

Section: Thermal Insulation and Fire Resistance Of Fr-sacas Under Ext...mentioning

confidence: 99%

“…j) Comparison of the thermal insulation performance of FR-SACAs with other types of aerogels [3,20,22,24,[54][55][56][57][58][59][60][61]. k) Comparison of the fire resistance of FR-SACAs with other types of aerogels [3,20,22,24,[55][56][57]60,61]…”

mentioning

confidence: 99%

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Flexible and Transformable Ceramic Aerogels via a Fire‐Reborn Strategy for Thermal Superinsulation in Extreme Conditions

Cheng,

Ma,

et al. 2023

Adv Funct Materials

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Effective thermal superinsulation in extremely high temperatures (EHT) is crucial for aerospace, industrial, and civilization activities. However, current strategies relying on ceramic materials face limitations due to their high thermal conductivity and brittleness in specific conditions. In this study, a feasible and scalable method for synthesizing a flexible, lightweight, and transformable fire‐reborn silica‐alumina hybrid ceramic aerogel (FR‐SACA) is presented, which is achieved by rearranging silica aerogel microparticles and Al2O3 ceramic fibers using a self‐sacrifice polymer, resulting in a bio‐inspired bird nest structured FR‐SACA. The SACA exhibits exceptional properties, including an ultra‐low density of 0.01 g cm−3, a low thermal conductivity of 0.029 W m−1 K−1, and a reversible compression of up to 80%. Notably, a 20 mm‐thick FR‐SACA demonstrates a remarkable temperature reduction of 1179.6 °C when exposed directly to a 1300 °C flame, suggesting its potential as a thermal superinsulation material in EHT environments. Furthermore, the transformability of SACA enables in situ fabrication on surfaces with diverse heteromorphic structures, such as flat, bent, and angled shapes, thereby providing thermal superinsulation for various constructions. The Phoenix Nirvana process opens up new possibilities for synthesizing ceramic aerogels with desirable flexibility and adaptive properties, facilitating effective thermal management under extreme conditions.

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Section: Thermal Insulation and Fire Resistance Of Fr-sacas Under Ext...mentioning

confidence: 99%

Section: Thermal Insulation and Fire Resistance Of Fr-sacas Under Ext...mentioning

confidence: 99%

“…[3,20,22,24,[54][55][56][57][58][59][60][61] k) Comparison of the fire resistance of FR-SACAs with other types of aerogels. [3,20,22,24,[55][56][57]60,61].…”

Section: Thermal Insulation and Fire Resistance Of Fr-sacas Under Ext...mentioning

confidence: 99%

mentioning

confidence: 99%

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Flexible and Transformable Ceramic Aerogels via a Fire‐Reborn Strategy for Thermal Superinsulation in Extreme Conditions

Cheng,

Ma,

et al. 2023

Adv Funct Materials

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“…[33][34][35] These brous networks provide a mechanically robust substrate with a higher surface area compared to conventional aerogels. [35][36][37][38] NFA fabrication via freeze-drying of a dispersion of short electrospun nanobers in a non-solvent produces a brous entanglement featuring a bimodal distribution of primary (4-7 mm wide) and secondary pores (40-60 mm diameter). 34,39 Compared to the laborious and expensive synthesis of conventional aerogels, this efficient method has allowed researchers to broaden the landscape of NFAs' functionality.…”

Section: Introductionmentioning

confidence: 99%

Vapor phase synthesis of metal–organic frameworks on a nanofibrous aerogel creates enhanced functionality

Rahmanian,

Ahmad Ebrahim,

Razavi

et al. 2024

J. Mater. Chem. A

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Synergistic enhancement of polyvinylpyrrolidone‐modified TiO₂ and graphene oxide on the corrosion resistance of waterborne epoxy

Xu,

Yang,

Feng

2023

J of Applied Polymer Sci

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Waterborne epoxy (WEP) resins have garnered significant interest due to their potential application as anticorrosion coatings for steel materials. However, it has been reported that defects in the cured coatings generated during the curing process lead to the level of anticorrosion not meeting the expected effects. In this study, TiO2 and GO were selected to be modified by polyvinylpyrrolidone (PVP) to obtain PT and PG, and used to improve the anticorrosion performance of WEP. The obtained PT and PG were characterized using Fourier transform infrared, Raman, and x‐ray photoelectron spectroscopy. The morphology of PT and PG before and after modification was observed using scanning electron microscopy, and the differences were described. The analysis results of laser confocal scanning microscopy and water contact angle (WCA) indicate that there are differences in surface roughness and WCA of the WEP coatings with or without PT and PG. Electrochemical impedance spectroscopy was used to evaluate the anticorrosion performance of the coatings. The results showed that WEP coatings containing PT and PG exhibited better anticorrosion performance. The synergistic enhancement of PT and PG on the anticorrosion performance was proposed, which can be attributed to the comprehensive effect of the hydrophobicity of the coating surface and the barrier effect of PT and PG within the coatings.

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Mechanically robust, thermally insulating and photo-responsive aerogels designed from sol-gel electrospun PVP-TiO2 nanofibers

Cited by 9 publications

References 64 publications

Flexible and Transformable Ceramic Aerogels via a Fire‐Reborn Strategy for Thermal Superinsulation in Extreme Conditions

Flexible and Transformable Ceramic Aerogels via a Fire‐Reborn Strategy for Thermal Superinsulation in Extreme Conditions

Vapor phase synthesis of metal–organic frameworks on a nanofibrous aerogel creates enhanced functionality

Synergistic enhancement of polyvinylpyrrolidone‐modified TiO₂ and graphene oxide on the corrosion resistance of waterborne epoxy

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Mechanically robust, thermally insulating and photo-responsive aerogels designed from sol-gel electrospun PVP-TiO2 nanofibers

Cited by 9 publications

References 64 publications

Flexible and Transformable Ceramic Aerogels via a Fire‐Reborn Strategy for Thermal Superinsulation in Extreme Conditions

Flexible and Transformable Ceramic Aerogels via a Fire‐Reborn Strategy for Thermal Superinsulation in Extreme Conditions

Vapor phase synthesis of metal–organic frameworks on a nanofibrous aerogel creates enhanced functionality

Synergistic enhancement of polyvinylpyrrolidone‐modified TiO2 and graphene oxide on the corrosion resistance of waterborne epoxy

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Synergistic enhancement of polyvinylpyrrolidone‐modified TiO₂ and graphene oxide on the corrosion resistance of waterborne epoxy