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(A) Comparison of photocatalytic H2 evolution rate of different photocatalysts; (B) Photocatalytic degradation of MO over the CdS–GR and (C) CdS–CNT composites with different mass ratios of CdS: carbon material under visible-light irradiation (Reprinted from Ye et al., 2012, Copyright 2012, with permission from Royal Society of Chemistry).
