Photocatalyst M_1/3NbMoO₆ (M = Fe, Ce) was prepared by the ion-exchange of LiNbMoO₆ with M(NO₃)₃. The structure and spectral response of the as-prepared samples were characterized by powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, and UV-vis diffuse reflectance spectroscopy (UV-via DRS). Photocatalytic performance was evaluated by oxidation of ethyl mercaptan (EM) under visible and UV light irradiation. Results reveal that a significant interaction existed between the terminal MoO bond in the MoO₆ octahedral unit in the laminate structure and the interlayer cations. The magnitude and mode of this interaction depend on the interlayer cation, including its position, Coulomb field and electrical configuration. The microstructure, spectral response features and photocatalytic oxidation performance are also directly affected by the factors discussed above.

Coupling the merits of transition metal-oxide with graphene for the application in energy-storage has received great attention. Herein, NiO loaded nitrogen-doped reduced graphene oxide...

NiMoO ₄ (NM) nanowires coated on nickel foam (NF) were prepared by the facile hydrothermal method. After calcination at low temperature, the nitrogen and phosphorus were co-doped into bimetal NF@NM nanowires. The hollow nanowire structure could be obtained after low-temperature calcination and nonmetallic doping. The as-synthesized hollow NF@NiMoO ₄ /N/P (NF@NM-NP) nanowires exhibit excellent hydrogen evolution reaction performance (with an overpotential of −164 mV at −100 mA cm ⁻² ) due to the existence of planar defects and the hollow structure. To further improve the catalytic activity in the oxygen evolution reaction, amorphous lamellar NiFe-layered double hydroxide (NiFe LDH) was deposited onto the NF@NM-NP nanowires via an electrochemical method to form core–shell NF@NM-NP@NiFe LDH, which deliver an overpotential of 218 mV at 100 mA cm ⁻² . Furthermore, an asymmetric setup composed of NF@NM-NP hollow nanowires and core–shell NF@NM-NP@NiFe LDH electrode were fabricated for overall seawater splitting, which can deliver potentials of 1.46 and 1.70 V at current densities of 10 and 100 mA cm ⁻² in simulated alkaline seawater (1 M KOH and 0.5 M NaCl), respectively. This may provide an effective path for the formation of a green energy conversion system.