Br-assisted Ostwald ripening of Au nanoparticles under H 2O 2 redox

Eunji Jang; Eun Kyung Lim; Jihye Choi; Joseph Park; Yong Jung Huh; Jin Suck Suh; Yong Min Huh; Seungjoo Haam

doi:10.1021/cg201243n

Br-assisted Ostwald ripening of Au nanoparticles under H ₂O ₂ redox

Eunji Jang, Eun Kyung Lim, Jihye Choi, Joseph Park, Yong Jung Huh, Jin Suck Suh, Yong Min Huh, Seungjoo Haam

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

31 Citations (Scopus)

Abstract

In nanomaterials synthesis, Ostwald ripening is a postsynthetic problem that is one obstacle for common utilization of nanomaterials. Herein, we report an unprecedented Ostwald ripening mechanism resulting from the simple combination of hydrogen peroxide (H ₂O ₂) and cetyltrimethylammonium bromide (CTAB)-stabilized gold nanoparticles (AuNPs) at room temperature. In this ripening process, H ₂O ₂ redox induces simultaneous dissolution and growth of AuNPs where bromide (Br ^-) from CTAB helps to form AuBr ₂ ^- in aqueous solution at room temperature. This understanding will provide basic strategies for advanced designs and development of various nanomaterials.

Original language	English
Pages (from-to)	37-39
Number of pages	3
Journal	Crystal Growth and Design
Volume	12
Issue number	1
DOIs	https://doi.org/10.1021/cg201243n
Publication status	Published - 2012 Jan 1

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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abstract = "In nanomaterials synthesis, Ostwald ripening is a postsynthetic problem that is one obstacle for common utilization of nanomaterials. Herein, we report an unprecedented Ostwald ripening mechanism resulting from the simple combination of hydrogen peroxide (H 2O 2) and cetyltrimethylammonium bromide (CTAB)-stabilized gold nanoparticles (AuNPs) at room temperature. In this ripening process, H 2O 2 redox induces simultaneous dissolution and growth of AuNPs where bromide (Br -) from CTAB helps to form AuBr 2 - in aqueous solution at room temperature. This understanding will provide basic strategies for advanced designs and development of various nanomaterials.",

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AU - Jang, Eunji

AU - Lim, Eun Kyung

AU - Choi, Jihye

AU - Park, Joseph

AU - Huh, Yong Jung

AU - Suh, Jin Suck

AU - Huh, Yong Min

AU - Haam, Seungjoo

PY - 2012/1/1

Y1 - 2012/1/1

N2 - In nanomaterials synthesis, Ostwald ripening is a postsynthetic problem that is one obstacle for common utilization of nanomaterials. Herein, we report an unprecedented Ostwald ripening mechanism resulting from the simple combination of hydrogen peroxide (H 2O 2) and cetyltrimethylammonium bromide (CTAB)-stabilized gold nanoparticles (AuNPs) at room temperature. In this ripening process, H 2O 2 redox induces simultaneous dissolution and growth of AuNPs where bromide (Br -) from CTAB helps to form AuBr 2 - in aqueous solution at room temperature. This understanding will provide basic strategies for advanced designs and development of various nanomaterials.

AB - In nanomaterials synthesis, Ostwald ripening is a postsynthetic problem that is one obstacle for common utilization of nanomaterials. Herein, we report an unprecedented Ostwald ripening mechanism resulting from the simple combination of hydrogen peroxide (H 2O 2) and cetyltrimethylammonium bromide (CTAB)-stabilized gold nanoparticles (AuNPs) at room temperature. In this ripening process, H 2O 2 redox induces simultaneous dissolution and growth of AuNPs where bromide (Br -) from CTAB helps to form AuBr 2 - in aqueous solution at room temperature. This understanding will provide basic strategies for advanced designs and development of various nanomaterials.

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Br-assisted Ostwald ripening of Au nanoparticles under H ₂O ₂ redox

Abstract

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