I tried to fabricate FeOOH on BiVO4/FTO through photo-assisted electrodeposition. During the electrodeposition, the layer turned to a black colour and started to fall off the FTO. What could be the reason?
https://www.google.com/url?sa=t&source=web&rct=j&url=https://pubs.rsc.org/en/content/articlelanding/2018/dt/c7dt04258b&ved=2ahUKEwiyzKiauuPzAhUugf0HHQatDE0QFnoECAMQAQ&usg=AOvVaw3DMUmEoiCUDMIIiYPJbGjR
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.helmholtz-berlin.de/pubbin/vkart_voepdf%3Fv%3Dnanux&ved=2ahUKEwiyzKiauuPzAhUugf0HHQatDE0QFnoECAgQAQ&usg=AOvVaw012KdgC-e5DO6uDPFh8vo-
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.mdpi.com/2073-4344/7/1/13/htm&ved=2ahUKEwiyzKiauuPzAhUugf0HHQatDE0QFnoECB4QAQ&usg=AOvVaw0VULHQMRT8dOvB7iCJ73UT
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