Black phosphorus @ molybdenum disulfide 2D nanocomposite with broad light absorption and high stability for methylene blue decomposition photocatalyst
Abstract
Recently, black phosphorus (BP) has become an increasingly popular two-dimensional material with application in many fields. In the field of photocatalyst, the substance is attracted by a wide spectrum and abundant constituents. BP is an attractive material with unique properties owing to its anisotropic structure, which is favorable for catalyst design as a result of bandgap change based on thickness. However, it has proved problematic in the photocatalyst field, due to rapid recombination of electrons and holes. As a result, to overcome this, we used a complex with MoS2 to prevent the recombination of electrons and holes and to have a broad range of optical absorption from visible light to NIR. MoS2 nanoflakes are a two-dimensional (2D) material of the transition metal dichalcogenide family, the advantage of which is that it can be used as a nano-junction between 2D materials. The nanocomposite material of BP and MoS2 shows a remarkable increase in photocatalytic decomposition ability of methylene blue which is an organic dye. It also has many cycles of catalytic ability, which is advantageous in terms of stability. There are expectations that MoS2 @ BP photocatalysts will be widely applied as a non-precious metal photocatalyst with broad light absorption spectra and multi-function photocatalytic materials.
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