Akira Nishimura Akira Nishimura Additional information is available at the end of the chapter

Additional information is available at the end of the chapter

**Effect of Overlapping Fe/TiO2**

http://dx.doi.org/10.5772/intechopen.70389

#### **Abstract**

Fe-doped TiO2 (Fe/TiO2 ) film photocatalyst was prepared by sol-gel and dip-coating process to respond to the visible spectrum. Netlike glass fiber and Cu disc that are base materials used for coating Fe/TiO<sup>2</sup> were investigated to promote the CO<sup>2</sup> reduction performance of the photocatalyst. The prepared Fe/TiO<sup>2</sup> film coated on netlike glass fiber and Cu disc was characterized by scanning electron microscope (SEM) and electron probe micro analyzer (EPMA). Additionally, the CO<sup>2</sup> reduction experiment using Fe/TiO<sup>2</sup> film coated on netlike glass disc, Cu disc, and their overlap was carried out by illuminating an Xe lamp or without ultraviolet (UV) light, respectively. As a result, the concentration of produced CO increases by Fe doping irrespective of base material used under the illumination condition with UV light as well as without UV light. The peak concentration of CO for the Fe/TiO<sup>2</sup> double overlapping is approximately 1.5 times as large as the Fe/TiO<sup>2</sup> single overlapping under the illumination condition with UV light due to the promotion of electron transfer between the two overlapped photocatalysts. However, the promotion ratio is approximately 1.1 times under the illumination condition without UV light.

**Keywords:** photocatalyst, Fe-doped TiO<sup>2</sup> , CO<sup>2</sup> reduction, base material, overlapping effect
