Hydrogen Evolution and Wastewater Treatment of Hydrangeal‐like Catalyst Decroatedby the NiS Nanosheet and PdNanoparticle

Multifunctional catalysts with photodegradation of organic contaminants and electrocatalytic hydrogen evolution are extremely urgent. In this work, a unique MoS2 hollow microsphere with a diameter of 1.5 μm was fabricated without adding any spherical template by an improved hydrothermal process. Interestingly, the MoS2 hollow microspheres with introduction of the NiS and Pd nanoparticles greatly restrain recombination rates of electron‐hole pairs, resulting in the outstanding photocatalytic activity. The RhB removal rates of the MoS2 hollow microsphere and the NPMS composites were 7 and 10 times higher than that of pure MoS2, respectively, for the high concentration of macrocyclic contaminants under visible‐light illumination. Furthermore, the optimal robust NPMS hybrids exhibite a lower overpotential of 100 mV (at 10 mV cm−2) and a smaller Tafel slope of 50 mV dec−1. The unique structure composite catalysts possess more exposed active sites and defects to enhance the catalytic activity for HER and removal of organic pollution. In order to improve the efficiency of environmental pollution treatment and hydrogen energy production, a novel catalyst (NPMS) with excellent catalytic activity and versatility was fabricated by an improved hydrothermal method. The RhB removal rate of high concentration macrocyclic contaminants for NPMS catalysts is 10 times higher than that of pure MoS2. Moreover, the best robust NPMS hybrids exhibited lower overpotential (100 mV) (at 10 mV cm−2) and smaller Tafel slope (50 mV dec−1).