School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China.
School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China.
J Colloid Interface Sci. 2023 Dec 15;652(Pt A):798-812. doi: 10.1016/j.jcis.2023.08.082. Epub 2023 Aug 12.
At present, the sustainable development of humans is facing health problems and ecological imbalance caused by environmental pollution. To solve the bacteria, antibiotics and other pollutants in wastewater, BiOCl and BiOI with appropriate bandgap width were selected to prepare Z-type heterojunction BiOCl/BiOI photocatalytic materials by calcination method. Under LED light, the best sample BiOCl/BiOI-4 could completely inactivate Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) in 30 min, Bacillus subtilis (B. subtilis) and Pseudomonas aeruginosa (P. aeruginosa) in 20 min, and degrade 70.6% of tetracycline (TC) and 97.4% of Rhodamine B (RhB). Photocurrent and electrochemical impedance tests (EIS) confirmed the high photocurrent response and low charge transfer resistance in the BiOCl/BiOI. The photocatalytic antibacterial and degradation mechanism of Z-type BiOCl/BiOI heterojunction was verified by capture experiments. Thus, this study provides a compact and efficient photocatalyst with broad-spectrum antibacterial activity and degradation properties.
目前，人类的可持续发展正面临着环境污染导致的健康问题和生态失衡。为了解决废水中的细菌、抗生素和其他污染物，选择具有适当带隙宽度的 BiOCl 和 BiOI 通过煅烧法制备 Z 型异质结 BiOCl/BiOI 光催化材料。在 LED 光下，最佳样品 BiOCl/BiOI-4 在 30 分钟内可完全灭活大肠杆菌（E. coli）和金黄色葡萄球菌（S. aureus），在 20 分钟内可灭活枯草芽孢杆菌（B. subtilis）和铜绿假单胞菌（P. aeruginosa），并可降解 70.6%的四环素（TC）和 97.4%的 Rhodamine B（RhB）。光电流和电化学阻抗测试（EIS）证实了 BiOCl/BiOI 中的高光电流响应和低电荷转移电阻。通过捕获实验验证了 Z 型 BiOCl/BiOI 异质结的光催化抗菌和降解机制。因此，该研究提供了一种具有广谱抗菌活性和降解性能的紧凑型高效光催化剂。
