Abstract We reported a novel TiO2-x/g-C3N4 nanorod arrays photoelectrode by urea drop-calcined and NaBH4 reduction. Due to synergistic effect of the oxygen vacancies and the g-C3N4 nanosheets, the TiO2-x/g-C3N4 photoelectrode exhibited excellent photoelectrochemical property and photoelectrocatalytic activity. The photocurrent density of TiO2-x/g-C3N4 was 6-fold and 1.5-fold higher than TiO2 and TiO2/g-C3N4, respectively. Meanwhile, the phenol degradation rate of TiO2-x/g-C3N4 photoelectrodes was as high as 83% under the stimulated solar light. Besides, the oxygen vacancies could promote the formation of the Z-scheme heterojunction between the TiO2 nanorods and g-C3N4 nanosheets.

中文翻译：

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将 TiO2 纳米棒阵列上的氧空位与 g-C3N4 纳米片结合以增强苯酚的光电化学降解

摘要 我们报道了一种新型的 TiO2-x/g-C3N4 纳米棒阵列光电极，通过尿素滴加煅烧和 NaBH4 还原。由于氧空位和g-C3N4纳米片的协同作用，TiO2-x/g-C3N4光电极表现出优异的光电化学性能和光电催化活性。TiO2-x/g-C3N4 的光电流密度分别比 TiO2 和 TiO2/g-C3N4 高 6 倍和 1.5 倍。同时，在受激太阳光下，TiO2-x/g-C3N4光电极的苯酚降解率高达83%。此外，氧空位可以促进 TiO2 纳米棒和 g-C3N4 纳米片之间 Z 型异质结的形成。