New materials for the light-induced hydrogen evolution reaction from the Cu–Si–Ti–O system. Issue 8 (15th January 2016)

• Record Type: Journal Article
• Authors: Stein, Helge S.; Gutkowski, Ramona; Siegel, Alexander; Schuhmann, Wolfgang; Ludwig, Alfred
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 8(2016)
• Page Start: 3148
• Page End: 3152
• Publication Date: 2016-01-15
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c5ta10186g
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Ti:CuSiO3 and Si:Cu3 TiO x are identified as promising photocathode materials with improved stability and high photocurrent densities. Abstract : Cu-containing photocathodes are generally limited by fast photocorrosion under working conditions. Hence stabilization of these materials is a key factor in their potential application for the light-induced hydrogen evolution reaction (HER). In order to identify new materials, oxidized Cu–Si–Ti metallic thin film precursor materials libraries were evaluated using a combinatorial approach. High-throughput photoelectrochemical characterization using an automated optical scanning droplet cell was performed on a material library to analyze doping and alloying effects on the light-induced HER. The results revealed that compositions near Ti-doped CuSiO3 (dioptase and copper-polysilicate) and Si-doped Cu3 TiO x act as comparatively stable and highly active materials for HER.