Arrayed porous iron-doped TiO2 as photoelectrocatalyst with controllable pore size

✍ Scribed by Jianfei Lei; Xiaoping Li; Weishan Li; Fengqiang Sun; Dongsheng Lu; Jin Yi

• Book ID: 103833211
• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 630 KB
• Volume: 36
• Category: Article
• ISSN: 0360-3199
• DOI: 10.1016/j.ijhydene.2011.03.121

✦ Synopsis

Arrayed porous iron-doped TiO 2 with controllable pore size was prepared by using polystyrene spheres and its structure, morphology, composition and photoelectrochemical properties were characterized with X-ray diffraction, scanning electron microscope, inductively coupled plasma-atomic emission spectrometer and electrochemical methods.

It is found that the photoelectrochemical properties of the arrayed porous TiO 2 can be improved by doping adequate amount of iron in the lattice of TiO 2 and the sample doped with 0.01 wt% Fe (based on Ti) exhibits the best photoelectrochemical performance. With doping 0.01 wt% Fe in TiO 2 , the photocurrent density of the sample is improved from 2.0 mA cm À2 to 10.0 mA cm À2 and its flat-band potential shifts from À0.38 V to À0.55 V (vs. SCE).