As an important member of two-dimensional transition metal dichalcogenides, MoSe₂ has a wide range of photoelectrochemical properties. However, MoSe₂ alone can not directly be used as photocatalyst for its poor performance owing to the strong recombination of photogenerated electron-hole pairs. Here, we propose a novel C fibers@MoSe₂ nanoplates core-shell composite, which was prepared by a facile, one-step thermal evaporation method. The composite has a remarkable feature of numerous MoSe₂ thin nanoplates grown in-situ, densely and even vertically on the surface of the C fibers. Due to the effective separation of photogenerated electron-hole pairs promoted by the prompt transfer of photogenerated electrons through C fibers, compared with commercially available pure MoSe₂ powder, such composite exhibits greatly improved solar-driven photocatalytic activity and high stability for the degradation of various organic/inorganic environmental pollutants including methylene blue, rhodamine B, p-chlorophenol and K₂Cr₂O₇ aqueous solutions, showing the great potential for environmental remediation by degrading toxic industrial chemicals in waste water using sunlight. Moreover, this one-step thermal evaporation is an easy-handling, eco-friendly and low-cost synthesis method, which is suitable for large-scale production.

MoSe ₂作为二维过渡金属二卤化物的重要组成部分，具有广泛的光电化学性质。然而，由于光生电子-空穴对的强重组，单独的MoSe ₂不能以其不良的性能直接用作光催化剂。在这里，我们提出了一种新颖的C纤维@MoSe ₂纳米板核-壳复合材料，它是通过一种简便的一步式热蒸发方法制备的。该复合材料具有众多MoSe ₂的显着特征在C纤维表面上密集，甚至垂直生长的纳米薄板。由于光生电子通过碳纤维的迅速转移促进了光生电子-空穴对的有效分离，与市售的纯MoSe ₂粉末相比，这种复合材料显示出大大提高的太阳能驱动的光催化活性和对各种降解的高稳定性。有机/无机环境污染物，包括亚甲基蓝，若丹明B，对氯苯酚和K ₂ Cr ₂ O ₇水溶液，通过使用阳光降解废水中的有毒工业化学品，显示出巨大的环境修复潜力。而且，这种一步式热蒸发是一种易于处理，环保且低成本的合成方法，适合大规模生产。