Efficient photocatalytic degradation of gaseous acetaldehyde over ground Rh-Sb co-doped SrTiO3 under visible light irradiation

Yuichi Yamaguchi; Sho Usuki; Kenji Yamatoya; Norihiro Suzuki; Ken-Ichi Katsumata; Chiaki Terashima; Akira Fujishima; Akihiko Kudo; Kazuya Nakata

doi:10.1039/c7ra11337d

Efficient photocatalytic degradation of gaseous acetaldehyde over ground Rh-Sb co-doped SrTiO₃ under visible light irradiation

RSC Adv. 2018 Jan 31;8(10):5331-5337. doi: 10.1039/c7ra11337d. eCollection 2018 Jan 29.

Authors

Yuichi Yamaguchi^{1

2}, Sho Usuki^{1

2}, Kenji Yamatoya², Norihiro Suzuki¹, Ken-Ichi Katsumata¹, Chiaki Terashima¹, Akira Fujishima¹, Akihiko Kudo^{1

3}, Kazuya Nakata^{1

2}

Affiliations

¹ Research Institute for Science and Technology, Photocatalysis International Research Center, Tokyo University of Science 2641 Yamazaki Noda Chiba 278-0022 Japan nakata@rs.tus.ac.jp.
² Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science 2641 Yamazaki Noda Chiba 278-0022 Japan.
³ Department of Applied Chemistry, Faculty of Science, Tokyo University of Science 1-3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan.

Abstract

A visible-light-responsive Rh-Sb co-doped SrTiO₃ photocatalyst (STO:Rh,Sb) via a solid-state reaction was successfully developed, following pulverization by using ball-milling. The prepared STO:Rh,Sb exhibited a large surface area and showed efficient photocatalytic degradation of acetaldehyde. The photocatalytic activity of STO:Rh,Sb ground for 60 min exceeded that of STO:Rh ground for 60 min (photocatalyst doped without antimony), indicating that doped antimony plays an important role in suppressing the Rh⁴⁺, which works as a recombination center, in STO:Rh,Sb. Furthermore, the photocatalytic performance of STO:Rh,Sb ground for 60 min was sustained over 3 cycles, confirming the chemical stability of the photocatalyst. Therefore, ground STO:Rh,Sb has the potential to be applied to environmental remediation under visible light irradiation.