Tan Bihui, Fang Yu, Chen Qianlin, Ao Xianquan, Cao Yang
College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China.
College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China.
J Colloid Interface Sci. 2021 Nov;601:581-593. doi: 10.1016/j.jcis.2021.05.155. Epub 2021 May 28.
BiOCO (BOC) was successfully loaded on a highly conductive TiC surface by the hydrothermal method, forming a unique BOC/TiC heterostructure. The use of advanced characterization methods reveals the composition, morphology and photoelectric properties of the material. The results show that the interface formed by close contact between BOC and TiC provides an effective channel for charge transfer between the two. Importantly, the photocatalytic degradation efficiency of BOC/TiC for tetracycline (TC) is ~80%, which is significantly higher than the degradation efficiency of pure BOC and pure TiC for TC. In addition, BOC/TiC still has high catalytic activity in the degradation of complex mixed antibiotics. This is because BOC and TiC have large specific surface areas, high light absorption capacity and efficient carrier separation after recombination. At the same time, the detected superoxide radicals (O) and holes (h) are the main active substances. The degradation pathway and catalytic mechanism of the photocatalytic degradation of TC by BOC/TiC are further explained. This research designed and developed a BOC/TiC composite material for the photocatalytic degradation of tetracycline and mixed antibiotic wastewater, providing experimental methods and ideas for actual wastewater treatment.
通过水热法成功地将BiOCO（BOC）负载在高导电性的TiC表面上，形成独特的BOC/TiC异质结构。使用先进的表征方法揭示了该材料的组成、形态和光电性能。结果表明，BOC与TiC紧密接触形成的界面为两者之间的电荷转移提供了有效通道。重要的是，BOC/TiC对四环素（TC）的光催化降解效率约为80%，显著高于纯BOC和纯TiC对TC的降解效率。此外，BOC/TiC在复杂混合抗生素的降解中仍具有高催化活性。这是因为BOC和TiC具有大比表面积、高光吸收能力以及复合后高效的载流子分离能力。同时，检测到的超氧自由基（O）和空穴（h）是主要活性物质。进一步解释了BOC/TiC光催化降解TC的降解途径和催化机理。本研究设计并开发了一种用于光催化降解四环素和混合抗生素废水的BOC/TiC复合材料，为实际废水处理提供了实验方法和思路。
