N-doped TiO₂ nanoparticles deposited on reduced graphene oxide sheets were successfully prepared by a photoreduction method. The synthesized N-TiO₂/rGO composite was characterized by XRD, SERS, XPS, TEM, UV-vis DRS and PL, and its visible-light photocatalytic activity was evaluated by degradation of tetracycline hydrochloride (TC). The results showed that N-TiO₂/rGO composites exhibited a more enhanced photodegradation activity compared to pure TiO₂ and N-doped TiO₂. Trapping tests indicated that not ·OH and h⁺ but ·O₂^- was chiefly responsible for the photodegradation process. The reusable experiments showed that the prepared N-TiO₂/rGO catalyst was stable during the photodegradation of TC.

通过光还原法成功地制备了在还原的氧化石墨烯片上沉积的N掺杂的TiO ₂纳米颗粒。通过XRD，SERS，XPS，TEM，UV-vis DRS和PL对合成的N-TiO ₂ / rGO复合材料进行了表征，并通过降解四环素盐酸盐（TC）来评价其可见光催化活性。结果表明，N-二氧化钛₂ / RGO复合材料相比，纯的TiO表现出更加提高的光降解活性₂和N掺杂的TiO ₂。捕获测试表明不· OH和H ⁺，但· ö ₂ ^-主要负责光降解过程。可重复使用的实验表明，所制备的N-TiO ₂ / rGO催化剂在TC的光降解过程中是稳定的。