title: A linker-mediated self-assembly method to couple isocharged nanostructures: layered double hydroxide-CdS nanohybrids with high activity for visible-light-induced H2 generation.
abstract: The electrostatically derived self-assembly of cationic Zn-Cr-layered double hydroxide (LDH) nanosheets and cationic CdS quantum dots (QDs) with anionic linkers leads to the formation of strongly coupled Zn-Cr-LDH-CdS nanohybrids. The hybridization with Zn-Cr-LDH leads to significant enhancement of the photocatalytic activity of CdS for visible-light-induced H2 generation, a property that is attributed to the depression of electron-hole recombination. In comparison with a direct hybridization method between oppositely charged species, this linker-mediated method provides greater flexibility in controlling the chemical composition and electronic coupling of the nanohybrids. The present hybridization strategy provides a useful method not only to couple two kinds of isocharged nanostructured materials, but also to explore efficient hybrid-type photocatalysts.
authors.affiliation: Department of Chemistry and NanoSciences, Ewha Woman's University, Seoul 120-750 (Korea), Fax: (+82) 2-3277-3419.
authors.forename: Jang Mee
authors.initials: JM
authors.lastname: Lee
authors.forename: Jayavant L
authors.initials: JL
authors.lastname: Gunjakar
authors.forename: Yeilin
authors.initials: Y
authors.lastname: Ham
authors.forename: In Young
authors.initials: IY
authors.lastname: Kim
authors.forename: Kazunari
authors.initials: K
authors.lastname: Domen
authors.forename: Seong-Ju
authors.initials: SJ
authors.lastname: Hwang
keywords: electronic coupling; linker-mediated hybridization; nanomaterials; photocatalysis; self-assembly