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Act as electron traps to reduce the recombination rate of the photogenerated electron/hole pairs. However, to the best of our knowledge, the method employed to deposit Ag or other metal particles onto TiO2 or other semiconducting photocatalysts has been either photoinduced deposition or calcinations. 18 – 21 These methods have several disadvantages: (i) the irradiation
Source can aggregation of the metal particles, (ii) The calcination process is tedious and energy-consuming because of the thermal post-treatment, which results in breakage of the TiO2 nanostructues and sintering or aggregation of the metal particles. To avoid these disadvantages and further improve the photocatalytic activity, in the present study, we developed a simple, efficient and reproducible method to coat small and uniformly distributed spherical Ag nanoparticles on TiO2 nanofibers by a wet chemical method. In This communication, we report a new strategy for the synthesis of novel Ag nanoparticles-coated TiO2 nanofiber heterogeneous composites through a citrate reduction method. In this process, calcination or long-term UV irradiation are not required, and the rate of Ag nucleation was so high that agglomeration and formation of largesized particles was successfully avoided. The Ag-coated ...

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