Non-centrosymmetric Au–SnO2 hybrid nanostructures with strong localization of plasmonic for enhanced photocatalysis application

• DOI: 10.1039/c3nr00985h
• Publication Date: 2013-04-23T11:33:55Z
• Authors: Wei Wu; Lei Liao; Shaofeng Zhang; Juan Zhou; Xiangheng Xiao; Feng Ren; Lingling Sun; Zhigao Dai; Changzhong Jiang
• Keywords: Ostwald ripening; Rhodamine B; Visible spectrum; Degradation

We present an innovative approach to the production of sub-100 nm hollow Au–SnO2 hybrid nanospheres, employing a low-cost, surfactant-free and environmentally friendly solution-based route. The nanostructures were synthesized using seed-mediated hydrothermal method, which can be divided into two stages: (1) formation multicore–shell Au@SnO2 nanoparticles (NPs) (2) thermal diffusion ripening form NPs. morphology, optical properties mechanism determined by collection joint techniques. Photocatalytic degradation Rhodamine B (RhB) in liquid phase served as probe reaction evaluate activity as-prepared NPs under irradiation both visible light ultraviolet light. Significantly, as-obtained exhibited enhanced or UV photocatalytic abilities, remarkably superior commercial pure SnO2 products P25 TiO2, mainly owing effective electron hole separation at SnO2–Au interfaces strong localization plasmonic near-fields effects.