MoS₂ as Cocatalyst for Improving Photocatalytic Performance of Bi₂MoO₆

Abstract

Bi2MoO6 is a bismuth‐based multi‐element photocatalyst with good visible light response due to its narrow band gap. However, its high photogenerated electron‐hole recombination rate limits its application as a photocatalyst. In this work, visible‐light‐driven MoS2/Bi2MoO6 composite photocatalyst was successfully synthesized by a hydrothermal method. The composite containing 1% MoS2 exhibited the best photodegradability and good cycling stability. The apparent reaction rate constant for the 1% MoS2 decorated Bi2MoO6 (0.03625) was about 2 times higher than that of pure Bi2MoO6 (0.01913). As a non‐precious metal promoter, MoS2 promoted the carrier‐separation efficiency and improved the absorption of visible light, which resulted in the enhancement of photocatalytic activity of the composite catalyst.

A Novel Non-Enzymatic Sensor Based on Bismuth Molybdate @polydopamine-Gold Nanocomposites for Efficient Nitrite Sensing

“…The characteristic peaks at 452 cm −1 correspond to the Bi-O stretching mode. 37 Bi 2 MoO 6 @PDA nanocomposite shows two absorption peaks at 1500, 1250 cm −1 can be attributed to N-H bending vibrations and the aromatic rings of PDA. 38 The valence states and element composition of Bi 2 MoO 6 @PDA-Au further investigated by XPS.…”

A Novel Rose‐Like CuS/Bi2WO6 Composite for Rhodamine B Degradation

“…No other elements rather than Bi, O, W, S, Cu and C were detected in the BWO‐3 based on the XPS survey spectra (Figure. 4a).Compared with BWO‐0, the peak of Cu 2p appeared in BWO‐3, and it is known from the literature that the peak of S 2p may overlap with Bi 4 f, indicating the presence of CuS in BWO‐3. To further understand the possible interface electron transfer, we carefully compared the Bi 4 f and W 4 f XPS spectra of BWO‐0 and BWO‐3.…”

Assemble of Bi-doped TiO2 onto 2D MoS2: an efficient p–n heterojunction for photocatalytic H2 generation under visible light

“…Interestingly, the coordination of the Mo atom and its d-electrons have a crucial role in determining the electronic structure of MoS 2 , makes it an important candidate for photocatalysis. Moreover, the dangling bonds and unsaturated coordination of MoS 2 edges offer opportunities for surface-active applications [50][51][52][53]. MoS 2 can fabricate a van der Waals heterostructure by vertically stacked with other semiconductors, which overcomes the weakness of single 2D layered material and extend its electronic and optoelectronic properties by introducing new physics at the interface.…”