2017年第78回応用物理学会秋季学術講演会

講演情報

一般セッション(口頭講演)

4 JSAP-OSA Joint Symposia 2017 » 4.1 Plasmonics

[5p-A410-1~13] 4.1 Plasmonics

2017年9月5日(火) 13:15 〜 17:45 A410 (410)

久保 若奈(農工大)、川田 善正(静岡大)、Lei Dangyuan(The Hong Kong Polytech. Univ.)

17:00 〜 17:15

[5p-A410-11] TiO2-based nanocomposites with metallic nanostructures on nanobranched substrate for photocatalytic water splitting

〇(DC)HsinChia Ho1、MinHsin Yeh2、BinJoe Hwang2、ChunHway Hsueh1 (1.MSE, NTU、2.CE, NTUST)

キーワード:plasmonic, photocatalyst, photoactivity

Plasmon-induced photocatalyst has found its application in the clean and renewable energy issue due to its combination of the large absorption and resonance in the visible region for plasmonic nanostructures with the ability of producing the electron-hole pairs in the ultraviolet range for semiconductors (e.g., TiO2). In this study, Au and Ag nanotriangles synthesized by reduction of metal precursor were deposited on the surface of nanobranched TiO2 arrays, which were prepared by hydrothermal methods. The photoactivity enhancement was evaluated using three-electrode system illuminated with the solar simulator. Photoactivity behaviors with silver and gold nanotriangles chemically deposited on the surface of nanobranched TiO2 electrode were found to be better than the bare TiO2. Plasmonic resonant characteristic of subwavelength metal nanoparticles was believed to enhance the photocatalytic efficiency of photocatalyst through hot electron transfer.