Synthesis and enhanced visible-light responsive of C,N,S-tridoped TiO2 hollow spheres
作者： Xiaoxia Lin , Degang Fu , Lingyun Hao , Zhen Ding
DOI: 10.1016/S1001-0742(13)60414-3
关键词:
摘要: Abstract C,N,S-tridoped TiO 2 hollow spheres (labeled as C,N,S-THs) were synthesized using carbon template and nanoparticles building blocks. The structure physicochemical properties of the catalysts characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-Vis diffuse reflectance spectrum (DRS), N adsorption-desorption isotherms, photoelectron spectroscopy (XPS) Photoluminescence emission (PL). results showed that had average diameter about 200 nm shell thickness was 20 nm. tridoped exhibited strong absorption in visible-light region. could narrow band gap THs mixing orbit O 2p with C 2p, S 3p orbits shift its optical response from ultraviolet (UV) to PL analysis indicated electron-hole recombination rate been effectively inhibited when doped C, elements. photocatalytic activities samples evaluated for degradation X-3B (Reactive Brilliant Red dye, C.I. Reactive 2) aqueous solution under (λ > 420 nm) irradiation. It found higher activity than commercial P25 undoped counterpart photocatalyst.
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