Sains Malaysiana 40(12)(2011): 1345–1353

Chemical Synthesis of Metal Nanoparticles in Aqueous Solutions with  the Presence of Some Additives

(Sintesis Kimia Nanozarah Logam dalam Air dengan Kehadiran Beberapa Bahan Penambah)

Munetaka Oyama*

Department of Material Chemistry, Graduate School of Engineering

Kyoto University, Nishikyo-ku, Kyoto 615-8520, Japan

Akrajas Ali Umar, Muhamad Mat Salleh & Burhanuddin Yeop Majlis

Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia

43600 UKM Bangi, Selangor, Malaysia

Received: 10 December 2010 / Accepted: 20 January 2011

ABSTRACT

Metal nanoparticles having interesting shapes can be prepared in aqueous solutions through simple reductions of metal ions with the presence of some additive reagents, such as cetyltrimethylammonium bromide and hexamethylenetetramine. In this review, some successful results for shape-controlled synthesis of metal nanoparticles in our group are summarized, which includes the synthesis of palladium nanocubes, palladium nanobricks, gold nanotripods. In addition, combining with indium tin oxide electrode surfaces, shape-controlled growth is shown to be possible to form gold nanoplates and copper oxide nanowires. Even in relatively mild synthetic conditions, interesting shape-controlled synthesis of metal nanoparticles is possible.

Keywords: Metal nanoparticle; nanobrick; nanocube; nanotripod

ABSTRAK

Nanozarah logam dengan bentuk yang menarik dapat disediakan dalam larutan berair melalui proses penurunan sederhana ion logam dengan kehadiran beberapa bahan tambah reagen, seperti setiltrimetilamonium bromida dan heksametilentetramina. Dalam tinjauan ini, dikemukakan beberapa hasil sintesis nanozarah logam dengan bentuk terkawal yang berjaya disediakan oleh kumpulan kami, iaitu meliputi sintesis nanokubus dan nanobata paladium serta nanotripod emas. Di samping itu, dikemukakan usaha penumbuhan nanoplat emas dan nanowayar kuprum oksida di atas permukaan elektrod indium timah oksida. Meskipun hanya dengan menggunakan keadaan sintesis kimia yang sederhana, nanozarah logam dengan bentuk terkawal boleh disediakan.

Kata kunci: Nanobata; nanokubus; nanoplat; nanotripod; nanozarah logam

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*Corresponding author; email: oyama.munetaka.4m@kyoto-u.ac.jp