Correction to: Journal of Materials Science: Materials in Electronics (2020) 31:13957–13969 https://doi.org/10.1007/s10854-020-03955-x

In the original version of this article, some information was missing in the experimental methodology and the acknowledgment section. Reference [1] was missing in the original version. The complete experimental methodology related to the fabrication of the photoelectrodes for photoelectrochemical characterization (on page 3) is:

For this purpose, the working electrode was prepared with the CuO powders of each sample by the drop-casting method using 20 mg of the sample in 5 mL of ethanol and sonicated for 15 min. Then, the obtained homogeneous solution was coated drop by drop over a FTO glass with an active area of 1.0 × 1.0  cm2 as described in the article by Tan et al. in the paper entitled "Synthesis of TiO2−x/W18O49 hollow double-shell and core–shell microspheres for CO2 photoreduction under visible light" [1].

Also, the correct Acknowledgement section is:

The authors wish to thank CONACYT for financial support for this research through the following projects: Cátedras CONACYT 1060, CONACYT-NRF-2016-278729, and CONACYTFC-1725. Manuel Alejandro Ávila López wants to thank CONACYT for the PhD scholarship, CVU 70726. The authors want to thank to Dr. David Avellaneda Avellaneda for his help with XPS analysis. The authors thank Prof. M. Mercedes Maroto-Valer and Dr. Jeannie Z. Y. Tan at the Research Centre for Carbon Solutions (RCCS) at Heriot-Watt University for their support for Raman characterization.