Abstract Exploration of highly-efficient photocatalysts for H2 evolution is a great concern for fabricating sustainable green energy systems. In this contribution, unique and architectural nanostructured WO3-CNT @MoSe2 composites were developed through facile hydrothermal and wet-chemical co-precipitation method. Structural, morphological and optical properties were investigated using XRD, SEM, EDX, BET, UV–vis and PL spectroscopy. Experimental results demonstrate that photocatalytic activity increases with increasing coupling contents of MoSe2 upto 4% and for CNT-WO3 with 2 at%. However, the further increment in content above this optimal level lessened the photocatalytic performance of composites. Higher photocatalytic activity towards hydrogen evolution is accredited to extended region of visible portion of solar light, large surface area and suppresses the charge carrier's recombination by synergistic effect between MoSe2 and WO3-CNT. Consequently, the as-prepared photocatalyst empowers potential applications for green hydrogen evolution.

中文翻译：

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MoSe 2 对纳米结构WO 3 -CNT 光催化析氢性能的影响

摘要 探索用于 H2 析出的高效光催化剂是制造可持续绿色能源系统的一个重要问题。在这一贡献中，通过简便的水热和湿化学共沉淀方法开发了独特的建筑纳米结构 WO3-CNT @MoSe2 复合材料。使用 XRD、SEM、EDX、BET、UV-vis 和 PL 光谱研究了结构、形态和光学性质。实验结果表明，光催化活性随着 MoSe2 的偶联含量增加至 4% 和 CNT-WO3 的偶联含量增加 2 at% 而增加。然而，在该最佳水平以上进一步增加含量会降低复合材料的光催化性能。对析氢具有更高的光催化活性被认为是太阳光可见部分的扩展区域，大表面积并通过 MoSe2 和 WO3-CNT 之间的协同作用抑制电荷载流子的复合。因此，所制备的光催化剂为绿色析氢提供了潜在的应用。