Abstract
In an attempt to fast and easy preparation of gold nanoparticles, aqueous extract of Japanese Cedar Wood Powder (CWP) was used as a Au(III) reducing agent as well as the nanoparticle stabilizer. A mixture of CWP-extract and Au(III) solution yielded gold nanoparticles of <50nm. However, after certain time span the particles were coagulated. When the extract was irradiated by γ-rays, it developed the stabilizing property as well. The UV-VIS study revealed the optimum irradiation dose for the required stability and high yield. TEM images show that particles of truncated triangular and hexahedral geometry exist in abundance.
