Wang Fangwai, Xue Ruixue, Ma Yujie, Ge Yizhao, Wang Zijun, Qiao Xiuwen, Zhou Paiang
School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University Beisi Road Shihezi Xinjiang 832003 P. R. China
Carbon Neutralization and Environmental Catalytic Technology Laboratory, Shihezi University Shihezi 832003 P. R. China.
RSC Adv. 2021 Oct 6;11(52):32955-32964. doi: 10.1039/d1ra05058c. eCollection 2021 Oct 4.
In this paper, a simple method was used to rapidly prepare MOF-808 with a large specific surface area and high stability. BiS and MOF-808 were used to design and synthesize high-stability BiS/MOF-808 nanocomposites, which were then used for the photocatalytic degradation of antibiotic tetracyclines. The performance test results showed that the 0.7-808 composite material had good photocatalytic degradation performance for tetracycline under visible-light irradiation, and the degradation rate reached 80.8%, which was 3.21 times and 1.76 times that of MOF-808 and BiS, respectively. This was mainly due to the high photocurrent response and photoluminescence of the BiS/MOF-808 composite material. Therefore, the close contact of n-n BiS/MOF-808 can transfer light-generated electrons and holes to improve the utilization efficiency of photogenerated charges, thereby greatly improving the photocatalytic reaction activity. Particle-capture experiments and ESR confirmed that ˙OH was the main active substance in the photocatalytic degradation.
本文采用一种简单的方法快速制备了具有大比表面积和高稳定性的MOF-808。利用BiS和MOF-808设计合成了高稳定性的BiS/MOF-808纳米复合材料，并将其用于光催化降解抗生素四环素。性能测试结果表明，0.7-808复合材料在可见光照射下对四环素具有良好的光催化降解性能，降解率达到80.8%，分别是MOF-808和BiS的3.21倍和1.76倍。这主要归因于BiS/MOF-808复合材料具有高光电流响应和光致发光。因此，n-n型BiS/MOF-808的紧密接触能够转移光生电子和空穴，提高光生电荷的利用效率，从而大大提高光催化反应活性。颗粒捕获实验和电子自旋共振证实˙OH是光催化降解中的主要活性物质。
