HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Institute for Catalysis >
Peer-reviewed Journal Articles, etc >

Preparation, characterization and photocatalytic performance of titania particles encapsulated in hollow silica shells as an efficient photocatalyst for redox-combined stereoselective synthesis of L-pipecolinic acid from L-lysine

Files in This Item:
JPPA246_50-59.pdf854.83 kBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/50408

Title: Preparation, characterization and photocatalytic performance of titania particles encapsulated in hollow silica shells as an efficient photocatalyst for redox-combined stereoselective synthesis of L-pipecolinic acid from L-lysine
Authors: Chandren, Sheela Browse this author
Ohtani, Bunsho Browse this author →KAKEN DB
Keywords: Hollow core-shell particle
Titania core
Silica shell
Photocatalytic synthesis of L-pipecolinic acid
Stereoselectivity
Issue Date: 15-Oct-2012
Publisher: Elsevier B.V.
Journal Title: Journal of Photochemistry and Photobiology A: Chemistry
Volume: 246
Start Page: 50
End Page: 59
Publisher DOI: 10.1016/j.jphotochem.2012.07.007
Abstract: Hollow core-shell particles of a titania core and a silica shell, the latter of which was highly porous, water-swollen and not directly connected to the former, were synthesized by a multistep process including carbon and silica coatings followed by calcination of the carbon-layer combustion. The core-shell particles suspended in aqueous solutions of L-lysine showed improved stereoselectivity in photocatalytic redox-combined synthesis of L-pipecolinic acid (L-PCA), maintaining L-lysine conversion and PCA selectivity, compared with that by bare titania particles, presumably due to the acidic microenvironment of the titania core to control the position of oxidation by positive holes as the first step of the redox-combined process. Modification of the silica layers to acidify them was also beneficial for improvement of optical purity of the product, PCA.
Type: article (author version)
URI: http://hdl.handle.net/2115/50408
Appears in Collections:触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 大谷 文章

Export metadata:

OAI-PMH ( junii2 , jpcoar )

MathJax is now OFF:


 

 - Hokkaido University