Role of MoSe2 on nanostructures WO3-CNT performance for photocatalytic hydrogen evolution

Exploration of highly-efficient photocatalysts for H-2 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.