Robust 2D layered MXene matrix–boron carbide hybrid films for neutron radiation shielding

Ju-Hyoung Han, Shi-Hyun Seok, Young Ho Jin, Jaeeun Park, Yunju Lee, Haeng Un Yeo, Jong-Ho Back, Yeoseon Sim, Yujin Chae, Jaewon Wang, Geum-Yoon Oh, Wonjoo Lee, Sung Hyun Park, In-Cheol Bang, Ji Hyun Kim and Soon-Yong Kwon ()
Additional contact information
Ju-Hyoung Han: Ulsan National Institute of Science and Technology (UNIST)
Shi-Hyun Seok: Ulsan National Institute of Science and Technology (UNIST)
Young Ho Jin: Ulsan National Institute of Science and Technology (UNIST)
Jaeeun Park: Ulsan National Institute of Science and Technology (UNIST)
Yunju Lee: Ulsan National Institute of Science and Technology (UNIST)
Haeng Un Yeo: Ulsan National Institute of Science and Technology (UNIST)
Jong-Ho Back: Korea Research Institute of Chemical Technology (KRICT)
Yeoseon Sim: Ulsan National Institute of Science and Technology (UNIST)
Yujin Chae: Ulsan National Institute of Science and Technology (UNIST)
Jaewon Wang: Ulsan National Institute of Science and Technology (UNIST)
Geum-Yoon Oh: Korea Institute of Industrial Technology (KITECH)
Wonjoo Lee: Korea Research Institute of Chemical Technology (KRICT)
Sung Hyun Park: Korea Institute of Industrial Technology (KITECH)
In-Cheol Bang: Ulsan National Institute of Science and Technology (UNIST)
Ji Hyun Kim: Ulsan National Institute of Science and Technology (UNIST)
Soon-Yong Kwon: Ulsan National Institute of Science and Technology (UNIST)

Nature Communications, 2023, vol. 14, issue 1, 1-10

Abstract: Abstract Large-scale fabrication of neutron-shielding films with flexible or complex shapes is challenging. Uniform and high boron carbide (B4C) filler loads with sufficient workability are needed to achieve good neutron-absorption capacity. Here, we show that a two-dimensional (2D) Ti3C2Tx MXene hybrid film with homogeneously distributed B4C particles exhibits high mechanical flexibility and anomalous neutron-shielding properties. Layered and solution-processable 2D Ti3C2Tx MXene flakes serve as an ideal robust and flexible matrix for high-content B4C fillers (60 wt.%). In addition, the preparation of a scalable neutron shielding MXene/B4C 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 241Am–9Be source, the 2D Ti3C2Tx MXene hybrid films are promising candidates for use in wearable and lightweight applications.

Date: 2023
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DOI: 10.1038/s41467-023-42670-z

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