A direct method for ultrafine gold networks with nanometre scale ligaments
by Yu Xin Zhang; Hua Chun Zeng
International Journal of Nanotechnology (IJNT), Vol. 8, No. 10/11/12, 2011

Abstract: Preparation of precious metals into porous structures in nanoscale regime is currently only achieved by dealloying processes, in which a second or third component is leached out of matrices of metal alloys. To avoid loss and hassle of recovery of leached precious metals, direct synthetic methods should be developed. In this work, we report our chemical synthesis of ultrafine gold networks through a reductive solution process at room temperature and normal atmospheric pressure. The prepared gold network has shown a high activity to work as surface enhanced Raman scattering substrate. In view of its process simplicity, this template-free direct method can be further studied for large-scale fabrications of other low density metals and alloys with meso- and macroporous open framework structures.

Online publication date: Sat, 24-Dec-2011

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