title: Surfactant-free sub-2 nm ultrathin triangular gold nanoframes.
abstract: Ultrathin triangular gold nanoframes are synthesized in high yield through selective gold deposition on the edges of triangular silver nanoprisms and subsequent silver etching with mild wet etchants. These ultrathin gold nanoframes are surfactant-free with tailorable ridge thickness from 1.8 to 6 nm and exhibit adjustable and distinct surface plasmon resonance bands in the visible and near-IR region. In comparison, etching of the nanoprism template by galvanic replacement can only create frame structures with much thicker ridges, which have much lower catalytic activity for 4-nitrophenol reduction than the ultrathin gold nanoframes.
authors: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore, Singapore.
authors: Mohammad Mehdi
authors: MM
authors: Shahjamali
authors: Michel
authors: M
authors: Bosman
authors: Shaowen
authors: S
authors: Cao
authors: Xiao
authors: X
authors: Huang
authors: Xiehong
authors: X
authors: Cao
authors: Hua
authors: H
authors: Zhang
authors: Stevin Snellius
authors: SS
authors: Pramana
authors: Can
authors: C
authors: Xue
keywords: gold; nanostructures; silver; surface plasmon resonance; template synthesis