New mesoporous silica/carbon composites by in situ transformation of silica template in carbon/silica nanocomposite
- Authors
- Yoon, Suk Bon; Choi, Byung-Seon; Lee, Kuen-Woo; Moon, Jei-Kwon; Choi, Yong Suk; Kim, Jong-Yun; Cho, Hyunjin; Kim, Jung Ho; Kim, Min-Sik; Yu, Jong-Sung
- Issue Date
- 1-3월-2014
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- mesoporous carbon capsule; ordered mesoporous silica; silica; carbon composite; selective dissolution; in situ transformation
- Citation
- JOURNAL OF EXPERIMENTAL NANOSCIENCE, v.9, no.3, pp.221 - 229
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF EXPERIMENTAL NANOSCIENCE
- Volume
- 9
- Number
- 3
- Start Page
- 221
- End Page
- 229
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/99042
- DOI
- 10.1080/17458080.2011.654275
- ISSN
- 1745-8080
- Abstract
- Hard template-based fabrication of mesoporous carbon unavoidably goes through the removal process of the template to generate template-free carbon replica, including troublesome disposal of template waste often accompanied by toxic etchant, which not only increases the fabrication cost of materials but also raises serious environmental concerns. As a novel strategy to overcome such problem, a direct in situ synthesis approach using silica waste in carbon/silica nanocomposite as a silica source and cetyltrimethylammonium bromide as a porogen under basic condition is reported in this study for the generation of a new composite composed of mesoporous MCM-41 silica and hollow carbon capsule. The resultant MCM-41/carbon capsule composite offers a 3-D interconnected multimodal pore system, which discloses a wide pore range of ordered uniform mesopores (ca 2.3nm) resulting from MCM-41 silica and disordered uniform mesopores (ca 3.8nm) and macropores (ca 300nm) from hollow mesoporous carbon, respectively. The composite has a high specific surface area (ca 909m(2)/g) and large pore volume (ca 0.73cm(3)/g). The in situ transformation approach of silica waste into valuable mesoporous silica is considered as a promising scalable route for efficient new multi-functional composites useful for a wide range of applications such as adsorption of volatile organic compounds and radioactive wastes produced in a nuclear facility.
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Collections - Graduate School > Department of Material Chemistry > 1. Journal Articles
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