B.S. Shaheen, A.M. Hafez, B. Murali, A.R. Kirmani, A. Amassian, O.F. Mohammed, N.K. Allam,
Sol. Energy Mater. Sol. Cells, 151, 149-153, (2016)
We demonstrate, for the first time, the synthesis of highly ordered niobium oxynitride microcones as an attractive class of materials for visible-light-driven water splitting. As revealed by the ultraviolet photoelectron spectroscopy (UPS), photoelectrochemical and transient photocurrent measurements, the microcones showed enhanced performance (~1000% compared to mesoporous niobium oxide) as photoanodes for water splitting with remarkable stability and visible light activity.