图4. (a)半导体基光催化剂的甲烷活化示意图[1]和(b)常用半导体的能带结构和不同反应物的氧化还原电位示意图[55]
Fig. 4. (a) Schematic diagram of methane activation over semiconductor-based photocatalysts[1]; (b) Schematic diagram of band structures of commonly used semiconductors and redox potentials of different reactants[55]