制备具有增强可见光光催化活性用于四环素降解的g-CN/UiO-66-NH/CdS光催化剂。

Zhang Hao, Li Jialiang, He Xianglei, Liu Bo

School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, China.

Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255000, China.

Nanomaterials (Basel). 2020 Sep 12;10(9):1824. doi: 10.3390/nano10091824.

A combination of calcination and hydrothermal processing was used to prepare a g-CN/UiO-66-NH/CdS photocatalyst, and the degradation of tetracycline (TC) over this material was assessed. The photocatalytic performance of this nanocomposite was approximately 4.4 and 2.3 times those of CdS and g-CN, respectively, and was found to be affected by the CdS loading amount, the pH of the reaction solution and the initial TC concentration. This catalyst also exhibited stable performance over four consecutive reaction cycles. The highly enhanced photoactivity of the g-CN/UiO-66-NH/CdS is attributed to the introduction of CdS, which widens the range over which the material absorbs visible light and inhibits the recombination of electron-hole pairs. The results of this study suggest further applications for this material in the treatment of contaminated wastewater powered by solar energy.

采用煅烧和水热法相结合的方式制备了一种g-CN/UiO-66-NH/CdS光催化剂，并评估了该材料对四环素（TC）的降解效果。这种纳米复合材料的光催化性能分别约为CdS和g-CN的4.4倍和2.3倍，且发现其受CdS负载量、反应溶液pH值和初始TC浓度的影响。该催化剂在连续四个反应循环中也表现出稳定的性能。g-CN/UiO-66-NH/CdS光活性的高度增强归因于CdS的引入，它拓宽了材料吸收可见光的范围并抑制了电子-空穴对的复合。本研究结果表明该材料在太阳能驱动的污染废水处理方面有进一步的应用前景。