Fig. 10From: Preparation of SnIn4S8/TiO2 Nanotube Photoanode and Its Photocathodic Protection for Q235 Carbon Steel Under Visible Lighta Nyquist plots of bare Q235 CS, Q235 CS coupled to TiO2 NTs film, and SnIn4S8/TiO2 composite film under and after visible light irradiation, and b the corresponding equivalent circuitBack to article page