A Linker-Mediated Self-Assembly Method to Couple Isocharged Nanostructures: Layered Double Hydroxide-CdS Nanohybrids with High Activity for Visible-Light-Induced H-2 Generation

作者：Lee Jang Mee; Gunjakar Jayavant L; Ham Yeilin; Kim In Young; Domen Kazunari; Hwang Seong Ju^*

来源：Chemistry - A European Journal, 2014, 20(51): 17004-17010.

DOI：10.1002/chem.201404472

• electronic coupling
• linker-mediated hybridization
• nanomaterials
• photocatalysis
• self-assembly

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 H-2 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.

• 出版日期2014-12-15