Add time:08/04/2019         Source:sciencedirect.com

P-type tin monoxide (SnO) decorated TiO2 nanoparticles have been synthesized by the powder atomic layer deposition (p-ALD) method in a fluidized bed reactor at 150–250 °C. Successful deposition of SnO on a TiO2 surface was realized using a precursor combination of Sn(dmamp)2 and H2O as Sn source and reactant, respectively. Prepared SnO/TiO2 nanoparticles were characterized by XRF, XPS, XRD, and TEM-EDS. Formation of a p-SnO/n-TiO2 heterojunction resulted in improved photocatalytic methylene blue degradation performance compared to using a TiO2 photocatalyst, which might be attributed to facile separation of photo-induced electron-hole pairs as well as to increased UV/visible light absorption by adopting a narrow bandgap SnO.

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