利用一步水热法结合原位硫化策略成功制备了具有丰富孔隙和紧密异质结界面的CuCo₂S₄@CuCo₂O₄半导体催化剂,层级多孔的形貌有效地提高了催化剂的光捕获能力,异质结内建电场和低能垒界面协同促进了光生载流子的定向转移与分离,进而提高催化剂的光催化能力。研究结果表明,通过调控硫源的加入量,CuCo₂S₄@CuCo₂O₄-3对双氯芬酸和罗丹明B的降解率分别为81.9%和90.3%,对Cr⁶⁺的还原率可达73.9%。催化剂展现出良好的抗干扰能力和循环稳定性,CuCo₂S₄@CuCo₂O₄对水体中有机污染物和重金属离子均有较好的催化去除能力。

CuCo₂S₄@CuCo₂O₄ semiconductor catalysts with abundant pore and tight heterogeneous interface are successfully prepared through using one-step hydrothermal method combined with in situ sulfide strategy.The hierarchical porous morphology of catalysts improves effectively their ability to capture the light.Furthermore,the coordination between heterojunction built-in electric field and low-power base interface promotes the directional transfer and separation of photo generated charge carriers,thus improving the photocatalytic ability of the catalyst.Study results show that the degradation rates of diclofenac acid and rhodamine B by CuCo₂S₄@CuCo₂O₄-3 are 81.9% and 90.3%,respectively,and the reduction rate of Cr⁶⁺ is 73.9% through adjusting the addition amount of sulfur source.The catalysts show good anti-interference ability and cycle stability,and CuCo₂S₄@CuCo₂O₄ has good catalytic removal ability for organic pollutants and heavy metal ions in water.

霍西学(2003-),男,本科生,研究方向为污水处理,huoxixue0618@163.com;王琼(1989-),女,博士,讲师,研究方向为环境污染物含量检测及催化去除,通讯联系人,joa0416@163.com。