Fig. 3: Radical production characteristics and photoelectrochemical properties of photocatalysts.
From: Semiconductor photocatalyst films protecting stone cultural relics against microbial weathering
(a) Electron spin resonance (ESR) signals of •O2−; (b) ESR signals of •OH; (c) Photocurrent responses; (d) Electrochemical impedance spectra; (e) Ultraviolet–visible diffuse reflectance absorption spectra; (f) Tauc plots.
