| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 가을 (10/31 ~ 11/02, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
22권 2호 |
| 발표분야 |
에너지저장.변환_포스터 |
| 제목 |
Selectively Localized Disorder Layer in Single Titanium Dioxide Nanoparticle for Novel Metal-free Photocatalysis |
| 초록 |
Despite a longstanding controversy surrounding TiO2 materials, TiO2 polymorphs with heterojunctions composed of anatase and rutile outperform individual polymorphs because of the type-II energetic band alignment at the heterojunction interface. However, localization of this disordered layer in a conventional single TiO2 nanoparticle with the heterojunction composed of anatase and rutile has remained a big challenge. Here we report the selective positioning of a disordered layer of controlled thicknesses between the anatase and rutile phases by a conceptually different synthetic route to access highly efficient novel metal-free photocatalysis for H2 production. Multiple heterojunctions in single TiO2 nanoparticles give the nanoparticles superior electron/hole separation efficiency and novel metal-free surface reactivity, which concomitantly yields an H2 production rate that is ~140 times higher than that of conventional anatase and rutile single heterojunction TiO2 systems. |
| 저자 |
조윤준, 오철우, 이선제, 박종혁
|
| 소속 |
연세대 |
| 키워드 |
Localization; Disorder layer; TiO2; Photocatalyst; Water splitting
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| E-Mail |
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