• Chae, Yujin
• Back, Jong-Ho
• Sim, Yeoseon
• Lee, Yunju
• Oh, Geum-Yoon
• Bang, In-Cheol
• Lee, Wonjoo
• Seok, Shi-Hyun
• Han, Ju-Hyoung
• Yeo, Haeng Un
• Wang, Jaewon
• Park, Jaeeun
• Jin, Young Ho

Abstract

<jats:title>Abstract</jats:title><jats:p>Large-scale fabrication of neutron-shielding films with flexible or complex shapes is challenging. Uniform and high boron carbide (B<jats:sub>4</jats:sub>C) filler loads with sufficient workability are needed to achieve good neutron-absorption capacity. Here, we show that a two-dimensional (2D) Ti<jats:sub>3</jats:sub>C<jats:sub>2</jats:sub>T<jats:sub><jats:italic>x</jats:italic></jats:sub> MXene hybrid film with homogeneously distributed B<jats:sub>4</jats:sub>C particles exhibits high mechanical flexibility and anomalous neutron-shielding properties. Layered and solution-processable 2D Ti<jats:sub>3</jats:sub>C<jats:sub>2</jats:sub>T<jats:sub><jats:italic>x</jats:italic></jats:sub> MXene flakes serve as an ideal robust and flexible matrix for high-content B<jats:sub>4</jats:sub>C fillers (60 wt.%). In addition, the preparation of a scalable neutron shielding MXene<jats:italic>/</jats:italic>B<jats:sub>4</jats: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 <jats:sup>241</jats:sup>Am<jats:sup>9</jats:sup>Be source, the 2D Ti<jats:sub>3</jats:sub>C<jats:sub>2</jats:sub>T<jats:sub><jats:italic>x</jats:italic></jats:sub> MXene hybrid films are promising candidates for use in wearable and lightweight applications.</jats:p>

Topics

• impedance spectroscopy
• surface
• stainless steel
• glass
• glass
• carbide
• layered
• composite
• Boron
• two-dimensional
• additive manufacturing