[9p-A11-1~11] 6.3 Oxide electronics

2:00 PM - 2:15 PM JST(5:00 AM - 5:15 AM UTC)

[9p-A11-1] Enhanced Photocatalytic Activity of WO₃ Nanoparticles
via Facile Encapsulated Annealing with Urea

〇(M1)Kota Sekiguchi¹, Retsuo Kawakami¹, Shin-ichiro Yanagiya^1,2, Yoshitaka Nakano³, Masahito Niibe⁴ (1.Tokushima Univ., 2.pLED, Tokushima Univ., 3.Chubu Univ., 4.The Univ. Tokyo)

Keywords:

WO3 semiconductor,Visible-light response photocatalyst,Urea

WO₃ nanoparticles were investigated as visible-light-responsive photocatalysts for addressing environmental pollution associated with population growth. Although WO₃ has a smaller band gap than TiO₂, its photocatalytic activity under indoor LED illumination is still limited. In this study, carbon and nitrogen co-doping using urea was employed to extend the optical absorption edge of WO₃. The urea content and annealing temperature were systematically varied, and co-doping was achieved using a simple sealed annealing method. The photocatalytic activity of the resulting WO₃ nanoparticles under white LED illumination was then evaluated.