title: Silver Ions Induce Lateral Etching of Gold Nanorods by K2PtCl4.
abstract: Selective etching is significant for fabrication of novel nanostructures. Here silver ions are introduced to control the lateral etching of gold nanorods by K2PtCl4 in a hot solution, producing a number of dumbbell-like PtAu-Au thin gold nanorods. Silver ions control the selective deposition of the reduced Pt(0) atoms, causing the selective etching of the unprotected Au. The middle diameter of the obtained dumbbell-like nanorods can be adjusted from 12 nm to <10 nm. It is believed that this is an effective method to reduce the diameter of gold nanorods.
authors.affiliation: †Key Laboratory of Colloid, Interface Chemistry, Ministry of Education, School of Chemistry, Chemical Engineering, Shandong University, Jinan 250100, PR China.
authors.forename: Fang
authors.initials: F
authors.lastname: Xie
authors.affiliation: †Key Laboratory of Colloid, Interface Chemistry, Ministry of Education, School of Chemistry, Chemical Engineering, Shandong University, Jinan 250100, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Ye
authors.affiliation: †Key Laboratory of Colloid, Interface Chemistry, Ministry of Education, School of Chemistry, Chemical Engineering, Shandong University, Jinan 250100, PR China.
authors.forename: HongYan
authors.initials: H
authors.lastname: Sun
authors.affiliation: †Key Laboratory of Colloid, Interface Chemistry, Ministry of Education, School of Chemistry, Chemical Engineering, Shandong University, Jinan 250100, PR China.
authors.forename: Shufang
authors.initials: S
authors.lastname: Kou
authors.affiliation: †Key Laboratory of Colloid, Interface Chemistry, Ministry of Education, School of Chemistry, Chemical Engineering, Shandong University, Jinan 250100, PR China.
authors.forename: Xia
authors.initials: X
authors.lastname: Guo