Abstract A chiral nematic mesoporous molybdenum carbide film (CN-Mo2C) was fabricated through the self-assembly of cellulose nanocrystal with peroxomolybdate. CN-Mo2C exhibits a tunable chiral nematic structure by varying the ratio of constituents, enabling a surface area of 210 m2 g−1. Importantly, it shows a typical chiroptical feature through polarized optical microscopy and circular dichroism spectral analysis. As it has an excellent conductivity of 2.4 × 10−2 S cm−1, we try to use CN-Mo2C in the electrocatalytic HER production, presenting an efficient H2 production capacity. It is a versatile synthetic strategy that can conveniently enable other large-area macroscopic chiral metal-based materials.

中文翻译：

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旋光手性介孔碳化钼薄膜的合成

摘要 通过纤维素纳米晶与过钼酸盐的自组装，制备了一种手性向列介孔碳化钼薄膜（CN-Mo2C）。CN-Mo2C 通过改变成分比例表现出可调节的手性向列结构，使表面积达到 210 m2 g-1。重要的是，它通过偏振光学显微镜和圆二色光谱分析显示了典型的手性特征。由于它具有 2.4 × 10−2 S cm−1 的优异电导率，我们尝试在电催化 HER 生产中使用 CN-Mo2C，表现出高效的 H2 生产能力。这是一种通用的合成策略，可以方便地实现其他大面积宏观手性金属基材料。