Correction: Photoelectrochemical study of carbon-modified p-type CuO nanoneedles and n-type TiO nanorods for Z-scheme solar water splitting in a tandem cell configuration.

[This corrects the article DOI: 10.1039/C8RA09403A.].

Photoelectrochemical study of carbon-modified p-type CuO nanoneedles and n-type TiO nanorods for Z-scheme solar water splitting in a tandem cell configuration.

Nanostructured photoelectrodes with a high surface area and tunable optical and electrical properties can potentially benefit a photoelectrochemical (PEC) water splitting system. The PEC performance of a nanostructured photoelectrode is usually quantified in a standard three-electrode configuration under potential-assisted conditions because of the additional overpotentials for the two half-reactions of water splitting. However, it is a necessity to fully recognize their potential to split water under unassisted conditions by designing a tandem cell that can provide sufficient voltage to split water.