Ultralight and Flexible Subnanowire Aerogels for Intrinsically Hydrophobic Thermal Insulation DOI
Y. D. Sheng, Yi Zhang, Zhifang Sun

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Aerogels are regarded as the next generation of thermal insulators; however, conventional aerogels suffer from issues such brittleness, low moisture resistance, and a complex production process. Subnanowires (SNWs) emerging materials known for their exceptional flexibility, toughness, intrinsic hydrophobicity, gelling capabilities, making them ideal building blocks flexible, tough, hydrophobic, thermally insulating aerogels. Herein, we present simple scalable strategy to construct SNW by freeze-drying hydroxyapatite (HAP) dispersions in cyclohexane. The resulting consist three-dimensional porous flakes composed thin layers bundles. They exhibit numerous outstanding properties, including ultralow density (12.33 mg·cm–3), high porosity (99.15%), remarkable flexibility excellent insulation properties (27.53 mW·m–1·K–1). Because HAP SNWs cores capped with hydrocarbon chains, demonstrate hydrophobicity (138° water contact angle) superior stability compared polymer foams. Furthermore, can effectively shield against infrared radiation due conductivity. This work suggests that serve intrinsically hydrophobic aerogels, paving way future applications insulation.

Language: Английский

Ultralight and Flexible Subnanowire Aerogels for Intrinsically Hydrophobic Thermal Insulation DOI
Y. D. Sheng, Yi Zhang, Zhifang Sun

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Aerogels are regarded as the next generation of thermal insulators; however, conventional aerogels suffer from issues such brittleness, low moisture resistance, and a complex production process. Subnanowires (SNWs) emerging materials known for their exceptional flexibility, toughness, intrinsic hydrophobicity, gelling capabilities, making them ideal building blocks flexible, tough, hydrophobic, thermally insulating aerogels. Herein, we present simple scalable strategy to construct SNW by freeze-drying hydroxyapatite (HAP) dispersions in cyclohexane. The resulting consist three-dimensional porous flakes composed thin layers bundles. They exhibit numerous outstanding properties, including ultralow density (12.33 mg·cm–3), high porosity (99.15%), remarkable flexibility excellent insulation properties (27.53 mW·m–1·K–1). Because HAP SNWs cores capped with hydrocarbon chains, demonstrate hydrophobicity (138° water contact angle) superior stability compared polymer foams. Furthermore, can effectively shield against infrared radiation due conductivity. This work suggests that serve intrinsically hydrophobic aerogels, paving way future applications insulation.

Language: Английский

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