A novel BiOCl thin film prepared by electrochemical method and its application in photocatalysis

► A novel BiOCl thin film was prepared by electrochemical method for the first time. ► BiOCl with highly exposed (1 1 0) plane distributed uniformly on the Ti substrate. ► Synergistic effect of BiOCl bulk and (1 1 0) surface states enhanced carrier transport. ► As-prepared thin film exhibited wonderful photocatalytic activity and stability. ► BiOCl film shows a competitive and promising application in photocatalysis field.