High-temperature seedless synthesis of gold nanorods

P. Zijlstra, Craig Bullen, J.W.M. Chon, M. Gu

Research output: Contribution to journalArticle

89 Citations (Scopus)

Abstract

We demonstrate seedless synthesis of gold nanorods at high temperatures up to 97 °C. Using the correct silver nitrate concentration is crucial for formation of rod-shaped particles at all temperatures. We observed a decrease of nanorod length with increasing temperature, while the width stays constant throughout the temperature range. From kinetics studies, we show 3 orders of magnitude increase in nanorod growth rate when the temperature is raised from room temperature to 97 °C. From the temperature dependence of the growth rate, we obtain a average activation energy for growth on all facets of 90 ± 10 kJ mol-1. High-temperature synthesis of gold nanorods presents a more attractive method for scalable flow-based production of gold nanorods.
Original languageEnglish
Pages (from-to)19315-19318
JournalJournal of Physical Chemistry Part B
Volume110
Issue number39
DOIs
Publication statusPublished - 2006

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