A linker-mediated self-assembly method to couple Isocharged nanostructures: Layered double hydroxide-CdS nanohybrids with high activity for visible-light-induced H2 Generation

Jang Mee Lee; Jayavant L. Gunjakar; Yeilin Ham; In Young Kim; Kazunari Domen; Seong Ju Hwang

doi:10.1002/chem.201404472

A linker-mediated self-assembly method to couple Isocharged nanostructures: Layered double hydroxide-CdS nanohybrids with high activity for visible-light-induced H₂ Generation

Jang Mee Lee, Jayavant L. Gunjakar, Yeilin Ham, In Young Kim, Kazunari Domen, Seong Ju Hwang

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

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.

Original language	English
Pages (from-to)	17004-17010
Number of pages	7
Journal	Chemistry - A European Journal
Volume	20
Issue number	51
DOIs	https://doi.org/10.1002/chem.201404472
State	Published - 15 Dec 2014

Keywords

Electronic coupling
Linker-mediated hybridization
Nanomaterials
Photocatalysis
Self-assembly

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10.1002/chem.201404472

Cite this

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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.",

keywords = "Electronic coupling, Linker-mediated hybridization, Nanomaterials, Photocatalysis, Self-assembly",

author = "Lee, {Jang Mee} and Gunjakar, {Jayavant L.} and Yeilin Ham and Kim, {In Young} and Kazunari Domen and Hwang, {Seong Ju}",

year = "2014",

month = dec,

day = "15",

doi = "10.1002/chem.201404472",

language = "English",

volume = "20",

pages = "17004--17010",

journal = "Chemistry - A European Journal",

issn = "0947-6539",

publisher = "Wiley-VCH Verlag",

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A linker-mediated self-assembly method to couple Isocharged nanostructures: Layered double hydroxide-CdS nanohybrids with high activity for visible-light-induced H₂ Generation. / Lee, Jang Mee; Gunjakar, Jayavant L.; Ham, Yeilin et al.
In: Chemistry - A European Journal, Vol. 20, No. 51, 15.12.2014, p. 17004-17010.

Research output: Contribution to journal › Article › peer-review

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T2 - Layered double hydroxide-CdS nanohybrids with high activity for visible-light-induced H2 Generation

AU - Lee, Jang Mee

AU - Gunjakar, Jayavant L.

AU - Ham, Yeilin

AU - Kim, In Young

AU - Domen, Kazunari

AU - Hwang, Seong Ju

PY - 2014/12/15

Y1 - 2014/12/15

N2 - 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.

AB - 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.

KW - Electronic coupling

KW - Linker-mediated hybridization

KW - Nanomaterials

KW - Photocatalysis

KW - Self-assembly

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