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Springer Science and Business Media LLC Nature Communications 14(1)
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    초록·키워드

    Large-scale fabrication of neutron-shielding films with flexible or complex shapes is challenging. Uniform and high boron carbide (B<sub>4</sub>C) filler loads with sufficient workability are needed to achieve good neutron-absorption capacity. Here, we show that a two-dimensional (2D) Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene hybrid film with homogeneously distributed B<sub>4</sub>C particles exhibits high mechanical flexibility and anomalous neutron-shielding properties. Layered and solution-processable 2D Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene flakes serve as an ideal robust and flexible matrix for high-content B<sub>4</sub>C fillers (60 wt.%). In addition, the preparation of a scalable neutron shielding MXene/B<sub>4</sub>C hybrid paint is demonstrated. This composite can be directly integrated with various large-scale surfaces (e.g., stainless steel, glass, and nylon). Because of their low thickness, simple and scalable preparation method, and an absorption capacity of 39.8% for neutrons emitted from a <sup>241</sup>Am-<sup>9</sup>Be source, the 2D Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene hybrid films are promising candidates for use in wearable and lightweight applications.

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