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CoO/HTi 2 NbO 7 -NS nanocomposite was constructed via the composite procedure of HTi 2 NbO 7  nanosheet (HTi 2 NbO 7 -NS) and cobalt oxide nanoparticles (CoO-NPs) by a hydrothermal method. The as-prepared samples were characterized by XRD, HRTEM, EDS, LRS, XPS, and UV-Vis DRS. The adsorption and photocatalytic performances of the as-prepared samples were evaluated using ethyl mercaptan (EM) in methane gas as the model pollutant. Results indicated that CoO-NPs were uniformly distributed on the surface of HTi 2 NbO 7 -NS. The interfacial p-n heterojunction was formed. The spectral absorption edge of CoO/HTi 2 NbO 7 -NS was significantly red-shifted and the band gap was narrowed compared with HTi 2 NbO 7 -NS due to the interaction. The results also shown that CoO/HTi 2 NbO 7 -NS has the largest adsorption capacity for EM at 340.5 μmol g −1  and the strongest photocatalytic oxidation performance, the EM could be photocatalytic oxidized to sulfoxide. The present work indicated that the p-n heterojunction material of the CoO/HTi 2 NbO 7 -NS was promising for mercaptans adsorption and degradation.

Enhanced photocatalytic performance for ethyl mercaptan by CoO/HTi 2 NbO 7 -NS p-n heterojunction nanocomposites