[6p-S44-1~21] 9.2 Nanowires and Nanoparticles

▼ [6p-S44-19] High Photocatalytic Performance of Silver Doped Titanium Dioxide Nanofibers

〇(M2)YinHsuan Chang¹, Tinghan Lin¹, Poyeh Wu¹, Mingchung Wu¹ (1.Chang Gung Univ.)

Keywords:metal doped TiO2, photodegradation, photocatalytic hydrogen production

A series of metal-doped TiO₂ nanofibers (metal/TiO₂ NFs) are prepared by combining the hydrothermal synthesis and thermal treatment without reduction process. Eleven types of metal nanoparticles, including Ag, Au, Co, Cr, Cu, Fe, Ni, Pd, Pt, Y, and Zn, were individually doped into TiO₂ NFs to test the photodegradation performance of organic dyes and photocatalytic hydrogen production. Consider photocatalytic performance, Ag/TiO₂ NFs was chosen to further study. Then, a systematical study was carried out to find the appropriate calcination condition and doping concentration for preparing the high catalytically active Ag/TiO₂ NFs. For the photodegradation of methyl orange in UV irradiation, 0.5mol% Ag/TiO₂ NFs calcined at 600^oC exhibits the highest activity in UV irradiation. In addition, Ag/TiO₂ NFs also have the capability in the photocatalytic hydrogen production. The hydrogen evolution rate is 500 μmol/g·hr for 0.5mol%-Ag/TiO₂ NFs under UV irradiation. The developed process is simple, cost-effective, safe and allows producing a series of high-performance photocatalysts without the need for hydrogen reduction procedure.