Flower-like spiral carbon fiber (SCF)/BiOCl composite photocatalysts with adjustable oxygen vacancies (OVs) were successfully fabricated via SCF surface modification of BiOCl. The sample composition and the photogenerated carrier separation efficiency were tested by various characterization methods. Compared with BiOCl, SCF/BiOCl photocatalysts display higher level of OVs and produce more superoxide radicals. The presence of OVs leads to the formation of an impurity energy level between the energy band of BiOCl. In addition, the SCF can transfer some of the photogenerated electrons produced by BiOCl. With the synergistic effect of OVs and SCF, an effective separation of photogenerated carriers is achieved. Photocatalytic activity of the samples was evaluated by the removal of inorganic pollutants (Cr (VI)) and organic pollutants (phenol and Tetracycline (TC)). The activity results show that SCF/BOC-1.75 for TC, phenol and Cr (VI) is 3.2, 2.5 and 10.6 times of that of the neat BOC; 0.9, 1.8 and 4.9 times of that of P25 under simulated sunlight illumination, respectively. The primary active species in the reaction system were investigated and the reaction mechanism was deduced.

通过BiOCl的SCF表面改性成功制备了具有可调节氧空位（OVs）的花状螺旋碳纤维（SCF）/BiOCl复合光催化剂。通过各种表征方法测试样品组成和光生载流子分离效率。与 BiOCl 相比，SCF/BiOCl 光催化剂显示出更高水平的 OVs 并产生更多的超氧自由基。OV 的存在导致在 BiOCl 能带之间形成杂质能级。此外，SCF 可以转移一些由 BiOCl 产生的光生电子。通过OVs和SCF的协同作用，实现了光生载流子的有效分离。通过去除无机污染物（Cr（VI））和有机污染物（苯酚和四环素（TC））来评估样品的光催化活性。活性结果表明，SCF/BOC-1.75对TC、苯酚和Cr（VI）的活性分别是纯BOC的3.2、2.5和10.6倍；在模拟日光照射下分别是P25的0.9、1.8和4.9倍。考察了反应体系中的主要活性物种，推导了反应机理。