Si-H induced synthesis of Si/Cu2O nanowire arrays for photoelectrochemical water splitting. (13th December 2017)

• Record Type: Journal Article
• Authors: Zhang, Shaoyang; She, Guangwei; Li, Shengyang; Mu, Lixuan; Shi, Wensheng
• Is Part Of: Nanotechnology. Volume 29:Number 3(2018)
• Publication Date: 2017-12-13
• Subjects: Si–H bonds -- Si/Cu2O heterojunctions -- equilibrium electrode potential -- water splitting; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/aa9731
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: We report a facile and low-cost method to synthesize Si/Cu2 O heterojunction nanowire arrays, without SiOx, at the Si/Cu2 O interface. The reductive Si–H bonds on the surface of Si nanowires plays a key role in situ by reducing Cu(II) ions to Cu2 O nanocubes and avoiding the SiOx interface layer. Different pH values would vary the electrochemical potential of reactions and as a result, different products would be formed. Utilized as a photoanode for water splitting, Si/Cu2 O nanowire arrays exhibit good photoelectrochemical performance.