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 journalArticle

27 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 languageEnglish
Pages (from-to)37-39
Number of pages3
JournalCrystal Growth and Design
Volume12
Issue number1
DOIs
Publication statusPublished - 2012 Jan 1

All Science Journal Classification (ASJC) codes

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

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