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Silane hydrophobically modified CNF/MXene aerogel developed in China

Release time:

2021-09-01 17:17

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Recently, a new type of silane hydrophobically modified nano-cellulose fiber/Ti3C2Tx aerogel (CNF/MXene aerogel) with Joule heat, photothermal and electromagnetic shielding properties has been studied in China.

Functional aerogels with large specific surface area and light weight have potential applications in water treatment, environment, biomedicine and other fields. Silane-hydrophobically modified (CNF)/MXene multifunctional composite aerogels were prepared by freeze-drying and post-coating processes, and the prepared multifunctional composite aerogels had an electromagnetic shielding efficiency of 39.5dB. MXene/CNFs aerogel film is hydrophobic, which is of great significance for the application of aerogels in humid environment.

CNF/MXene aerogel film also has excellent Joule heating and photothermal properties, fast thermal response and higher temperature range (Joule heating is 30.2~141.4°C, and photothermal properties are 30~91°C). MXene/CNFs multifunctional composite aerogels, which integrate hydrophobicity, high electromagnetic shielding efficiency, excellent Joule heating and photothermal properties, have broad application prospects in the field of smart clothing and electromagnetic shielding.

In recent years, China has made systematic and in-depth research on the preparation of multi-functional high-performance composites by the strong combination of one-dimensional nano-cellulose and two-dimensional Ti3C2Tx MXene. Using the combination of CNF and MXene, the mechanical properties of the material are greatly improved, and the superhydrophobic surface MXene with self-cleaning and light-driving properties is prepared; using MXene/CNF as ink, combined with 3D printing technology, intelligent fiber fabrics with photothermal, electrothermal and sensing properties are prepared.

Schematic of Preparation of Silane Hydrophobically Modified CNF/MXene Aerogels with Joule Thermal, Photothermal and Electromagnetic Shielding Properties