Construction of g-C?N?-mNb?O? Composites with Enhanced Visible Light Photocatalytic Activity.

ABSTRACT: A series of composites consisting of g-C?N? sheet and mesoporous Nb?O? (mNb?O?) microsphere were fabricated by in situ hydrolysis deposition of NbCl? onto g-C?N? sheet followed by solvothermal treatment. The samples were characterized using powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), N? adsorption-desorption, X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectroscopy (DRS) and photoluminescence spectroscopy (PL). The photocatalytic activity of the composites was studied by degradation of rhodamine B (RhB) and tetracycline hydrochloride (TC-HCl) in aqueous solution under visible light irradiation (λ > 420 nm). Compared with g-C?N? and mNb?O?, g-C?N?-mNb?O? composites have higher photocatalytic activity due to synergistic effect between g-C?N? and mNb?O?. Among these composites, 4% g-C?N?-mNb?O? has the highest efficiency and good recyclability for degradation of both RhB and TC-HCl.

SUBMITTER: Wang M 

PROVIDER: S-EPMC6027328 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature