Recently, Li Jia-Xin et al. reported a communication on Catalysis Science & Technology on Dec. 03, 2015. 3, 4, 9, 10-perylenetetracarboxylic dianhydride(PTCDA)nanorods as an n-type organic semiconductor was utilized to construct a powder-based photocatalytic water oxidation system with cobalt oxide as a cocatalyst. The corresponding AQE is 4.6 ± 0.3% under visible-light irradiation at 410 nm. Time-resolved transient absorption spectroscopic study revealed that long-lived PTCDA charge carriers generated by excitation could be transferred to CoOx effectively for oxygen evolution.