In this article, we have synthesized Co²⁺-doped BiOBr_xCl_1-x hierarchical nanostructured microspheres, featuring different degrees of Co²⁺ doping, displaying excellent photocatalytic performance. X-ray diffraction and Raman spectroscopy indicated that the Co²⁺ ions were successfully doped into the BiOBr_xCl_1-x nanocrystals. The photodegradation rate of rhodamine B mediated by a doped BiOBr_xCl_1-x was 150 % greater than that of the non-doped BiOBr. We ascribe the improved photocatalytic capability of the Co²⁺-doped BiOBr_xCl_1-x to a combination of its superior degree of light absorption, more efficient carrier separation, and faster interfacial charge migration. The major active species involved in the photodegradation of RhB also has been investigated. Moreover, the doped BiOBr_xCl_1-x possessed excellent cellular biocompatibility and displayed remarkable performance in the photocatalytic bacterial inactivation.

在本文中，我们合成了Co ²⁺掺杂的BiOBr _x Cl _1-x分层纳米结构微球，它们具有不同程度的Co ²⁺掺杂，显示出优异的光催化性能。X射线衍射和拉曼光谱表明，Co ²⁺离子被成功地掺杂到BiOBr _x Cl _1-x纳米晶体中。掺杂的BiOBr _x Cl _1-x介导的若丹明B的光降解率比未掺杂的BiOBr高150％。我们归因于Co ²⁺掺杂的BiOBr _x Cl _1-x的提高的光催化能力兼具优异的光吸收度，更有效的载流子分离和更快的界面电荷迁移。还研究了参与RhB光降解的主要活性物质。此外，掺杂的BiOBr _x Cl _1-x具有优异的细胞生物相容性，并在光催化细菌失活方面表现出卓越的性能。