콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Templated Synthesis of Porous Capsules with a Controllable Surface Morphology and Their Application as a Gas Sensor
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2007-06
- 저자명 Won San Choi, Hye Young Koo, Zhuang Zhongbin, Yadong Li, and Dong-Yu Kim*
- 학술지명 Adv. Funct. Mater.
- 발행처명 Wiley
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 5
- 논문 다운로드 링크(외부) https://doi.org/10.1002/adfm.200601002
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
Porous capsules composed of hematite, silica, and hematite–silica composites are prepared by a templated synthesis method. Polyelectrolyte multilayer-coated particles (PEMPs) are used to synthesize goethite nanocrystals and the resulting goethite-nanocrystal-embedded PEMPs (PEMP–goethite) are then used as templates to form porous capsules. The surface morphology and surface area of the porous capsules can be controlled by the size of the PEMP–goethite template, which is determined by the extent of growth of the goethite nanocrystals. By controlling the surface morphology and area, it is also possible to tune the sensitivity of the hematite capsules for use as gas-sensing materials. This surfactant-free approach is also used to synthesize silica and silica-based composite capsules with a controllable porous shell thickness. This straightforward approach can also be extended to the synthesis of other porous capsules or particles with a controllable surface morphology.
