Controlled Assembly of Porphyrin-MoS₂ Composite Nanosheets for Enhanced Photoelectrochemical Performance

As a promising non-precious metal photoelectrochemical (PEC) catalyst, MoS₂ exhibits high electrocatalytic activity and stability, while the weak light absorption efficiency and low photoresponse current limit its practical application. Herein, a facile co-assembly approach is proposed to construct porphyrin-MoS₂ composite photoelectrocatalysts. The as-prepared photoelectrocatalysts show a significantly enhanced photocurrent response as high as 16 μA cm^-2 , which is about 2 times higher than that of bare MoS₂ . Furthermore, the obtained porphyrin-MoS₂ catalysts exhibit excellent durability when tested for 23000 s, thus providing a useful strategy for the design of highly efficient dye-sensitized PEC catalysts.