In situ construction of 0D CoWO4 modified 1D Mn0.47Cd0.53S for boosted visible-light photocatalytic H2 activity and photostability.

The 1D Mn 0.47 Cd 0.53 S nanorods loaded with 0D CoWO 4 nanoparticles were prepared, in addition, a possible mechanism of the photocatalytic H 2 production activity was proposed. [Display omitted] • CoWO 4 Modified Mn 0.47 Cd 0.53 S was synthesized by simple hydrothermal process. • The CoWO 4 /Mn 0.47 Cd 0.53 S-25 can be used as a low cost catalyst for H 2 evolution. • The CoWO 4 /Mn 0.47 Cd 0.53 S-25 demonstrates excellent H 2 production activity and stability. To enhance the photocatalytic activity, loading proper semiconductor with high efficiency and low cost is one of the most valid approaches. Herein, various amounts of CoWO 4 as a novel metal-free material were loaded on Mn 0.47 Cd 0.53 S (MCS) nanorods for photocatalytic hydrogen production reaction. The CoWO 4 /Mn 0.47 Cd 0.53 S-25 (CW/MCS-25) exhibits the highest hydrogen production rate of 41.53 mmol·h−1·g−1 in the Na 2 S/Na 2 SO 3 system, which is about 2.68 times higher than that of pristine MCS. The Mapping and HRTEM reveals the deposited of CoWO 4 on the MCS. The detailed analyses of XPS, EIS, TRPL spectra and transient photocurrent responses indicate that CoWO 4 and MCS interacted closely and the photogenerated electrons of CoWO 4 can be transferred into MCS. In particular, the introduction of CoWO 4 can further transfer the photogenerated holes of MCS, thereby inhibiting the photocorrosion of MCS and improving photocatalytic activity. This work provides a reference for the exploration of noble metal-free composite material and shows great potential in the photocatalytic application. [ABSTRACT FROM AUTHOR]