title: High yield seedless synthesis of high-quality gold nanocrystals with various shapes.
abstract: In this Article, high-quality gold nanocrystals (Au NCs) with various shapes including concave cubic, trisoctahedral, cubic, rod-like, and quasi-spherical have been successfully produced in high yield via adding a trace amount of NaBH4 solution into growth solutions mainly composed of HAuCl4, ascorbic acid, and surfactants. The sizes and shapes of as-prepared Au NCs can be tuned by the compositions of the growth solutions and the amount of NaBH4 added. The electrocatalytic performance of differently shaped Au NCs for methanol oxidation was studied; as-prepared trisoctahedral or concave cubic Au NCs are more highly active electrocatalysts for methanol oxidation due to the presence of high-index facets on their surface.
authors.affiliation: State Key Laboratory of Crystal Materials, Shandong University , Jinan, 250100, People's Republic of China.
authors.forename: Jihui
authors.initials: J
authors.lastname: Zhang
authors.forename: Chunxiao
authors.initials: C
authors.lastname: Xi
authors.forename: Cong
authors.initials: C
authors.lastname: Feng
authors.forename: Haibing
authors.initials: H
authors.lastname: Xia
authors.forename: Dayang
authors.initials: D
authors.lastname: Wang
authors.forename: Xutang
authors.initials: X
authors.lastname: Tao
mesh_terms: D002384:Catalysis; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D000432:Methanol / Q000737:chemistry; D010084:Oxidation-Reduction; D010316:Particle Size; D013499:Surface Properties
chemical_list: D006046:Gold; D000432:Methanol