Surfactant-Templated Synthesis and Catalytic Properties of Patterned Nanoporous Titania Supports Loaded with Platinum Nanoparticles

Autor:	Jibao He, Vijay T. John, Anthony Nunes, Darshan Gandhi, Christopher J. Brooks, Ganapathiraman Ramanath, Arijit Bose, Jayashri Sarkar
Rok vydání:	2008
Předmět:	Materials science Nanocomposite Nanoporous General Chemical Engineering Nanoparticle chemistry.chemical_element Nanotechnology General Chemistry Platinum nanoparticles chemistry Specific surface area Materials Chemistry Photocatalysis Platinum Nanoscopic scale
Zdroj:	Chemistry of Materials. 20:5301-5306
ISSN:	1520-5002 0897-4756
DOI:	10.1021/cm8014034
Popis:	Hexagonally patterned porous titania is synthesized from a titanium isopropoxide precursor using a viscous surfactant template separating nanoscopic bicontinuous channels of water and isooctane. Subsequent salt reduction in the aqueous nanochannels decorates the pore surfaces with well-separated platinum (Pt) nanoparticles. Because of the decreased mass transfer resistance provided by the patterned and interconnected macropores that persist throughout the support, these nanocomposites exhibit a significantly higher carbon monoxide oxidation efficiency than that obtained with a commercial support that has a fourfold larger specific surface area. This simple templated synthesis strategy for creating highly organized composites has wide applications beyond the one reported here, including photocatalysis, photonic crystals, sensors, and solar cell assemblies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a271226d9658727aaf3b95e8789c3ade https://doi.org/10.1021/cm8014034 Zobrazit plný text záznamu