New mesoporous silica/carbon composites byin situtransformation of silica template in carbon/silica nanocomposite

Autor:	Jei-Kwon Moon, Byung-Seon Choi, Kuen-Woo Lee, Jong-Sung Yu, Jung Ho Kim, Min-Sik Kim, Yong Suk Choi, Jong-Yun Kim, Suk Bon Yoon, Hyun-Jin Cho
Rok vydání:	2012
Předmět:	Fabrication Materials science Composite number Biomedical Engineering chemistry.chemical_element Bioengineering Nanotechnology Mesoporous silica Mesoporous organosilica chemistry.chemical_compound chemistry Bromide General Materials Science Silica nanocomposite Mesoporous material Carbon
Zdroj:	Journal of Experimental Nanoscience. 9:221-229
ISSN:	1745-8099 1745-8080
Popis:	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 2.3 nm) resulting from MCM-41 silica and disordered uniform mesopores (ca 3.8 nm) and macropores (ca 300 nm) from hollow mesoporous carbon, respectively. The ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::af4f88a0ae44a96c5429b89b0e86ae4f https://doi.org/10.1080/17458080.2011.654275 Zobrazit plný text záznamu