| 학회 | 한국화학공학회 |
| 학술대회 | 2014년 가을 (10/22 ~ 10/24, 대전 DCC) |
| 권호 | 20권 2호, p.2047 |
| 발표분야 | 재료 |
| 제목 | Self-Isolated Mesoporous Microstructures by Controlled Cracks |
| 초록 | Cracking in nature has often been studied either the fundamental point of view or for practical applications. Cracks have typically been generated by stress, however, it is difficult to control crack formation. Some studies suggested how to handle and fabricate well organized cracks, but it was hard to commercialization. Herein, we report a simple and novel fabrication strategy to produce isolated mesoporous micro-architectures over large areas by controlling microscale crack formations. A soft molding technique on wet pastes consisting of nanoparticles(NPs) is proposed to create a hierarchical mesoporous micro-architectures. Volume shrinkage during the calcination step, removing the remaining of organic materials, causes cracks between the structures and it results in prism and pyramid micro structures isolated from patterns. Because each structure is mesoporous structure which consists of TiO2 nanoparticles, it is possible to use as microchannel. Furthermore, we will present a method to design photocatalyst by adding a magnetic nanoparticles to TiO2 pyramid microstructure. |
| 저자 | 이윤찬1, 우상혁1, 이수진1, 윤현식2, 차국헌1 |
| 소속 | 1서울대, 2서울과학기술대 |
| 키워드 | microstructure; nanoparticles; crack |
| 원문파일 | 초록 보기 |
