Nano core-shell Mn0.5Cd0.5S@ copper phthalocyanine heterojunction structured with high hydrogen production efficiency.

The core-shell structure photocatalysts have attracted extensive attention in photocatalysis due to large contact area, multiple reaction sites and high photocatalytic performance. Herein, a series of Mn 0.5 Cd 0.5 S@CuPc nano core-shell composites photocatalyst were successfully synthesized by facile solution method. The results showed that the as-prepared Mn 0.5 Cd 0.5 S photocatalyst hydrogen evolution was only 0.40 mmol/g·h, while Mn 0.5 Cd 0.5 S@CuPc composites show strong light absorption from 600 nm to 800 nm and high catalytic performance compared with pure Mn 0.5 Cd 0.5 S. Notably, the hydrogen evolution of Mn 0.5 Cd 0.5 S @CuPc-5% reached up to 2.14 mmol/(g·h), representing a remarkable 5.35 times improvement compared to the pure Mn 0.5 Cd 0.5 S when the optimal loading capacity of CuPc was set at 5%. The Mn 0.5 Cd 0.5 S@CuPc-5% exhibits excellent photocatalytic performance can be attributed to the CuPc forms a uniform molecular film on the surface of Mn 0.5 Cd 0.5 S, and the close contact between Mn 0.5 Cd 0.5 S and CuPc which can effectively promote the transfer and separation of photo-generated carriers. Moreover, the 5% Mn 0.5 Cd 0.5 S@CuPc nano core-shell composites have excellent stability, photocatalyst hydrogen activity reduce was approximately 20.1% after four runs for 12 h. This nano core-shell structure photocatalyst research offers a new strategy for constructing organic-inorganic nanocomposite photocatalysts. [Display omitted] • High hydrogen production of samples synthesized by lower cost raw material s. • Mn 0.5 Cd 0.5 S@CuPc structure promote the separation of photogenerated charge carriers. • Nano core-shell Mn 0.5 Cd 0.5 S@CuPc samples was synthesized using facile solution method. • Mn 0.5 Cd 0.5 S@CuPc exhibited dramatically enhanced photoactivity for H 2 production. [ABSTRACT FROM AUTHOR]