An easily modified method using FeCl3 to synthesize nanoporous gold with a high surface area. Issue 30 (27th March 2017)

• Record Type: Journal Article
• Authors: Shao, Kenan; Fang, Chun; Yao, Yinfang; Zhao, Canyun; Yang, Zhi; Liu, Jianguo; Zou, Zhigang
• Is Part Of: RSC advances. Volume 7:Issue 30(2017)
• Page Start: 18327
• Page End: 18332
• Publication Date: 2017-03-27
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra01862b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Illustration of the dealloying of nanoporous gold using FeCl3 . Abstract : Here, we report a two-step dealloying method using ferric chloride to synthesize nanoporous gold (NPG), instead of the traditional corrosive nitric acid method. In the new method, the pore size can be easily controlled by using various solutions and additives. For example, when using ethylene glycol (EG) as a solvent, the NPG (NPG-EG) pore size can be made as small as 8 nm, thus increasing the electrochemical specific surface area of the NPG to seven times higher than that of traditional NPG with a pore size of 25 nm. NPG-EG showed an enhanced capacitance of 1340 F g −1 at a current density of 2.0 A g −1 when electrodeposited with Ni3 S2 .