Fu Bo, Sun Huiwen, Liu Ju, Zhou Tiantian, Chen Muhua, Cai Zhengchun, Hao Dandan, Zhu Xinbao
College of Chemical Engineering, Jiangsu Key Lab for the Chemistry & Utilization of Agricultural and Forest Biomass, Nanjing Forestry University, Nanjing 210037, People's Republic of China.
School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, Jiangsu, People's Republic of China.
ACS Omega. 2022 Jul 18;7(30):26201-26210. doi: 10.1021/acsomega.2c01862. eCollection 2022 Aug 2.
The design and construction of a photocatalyst with a heterostructure are a feasible and effective way to enhance the catalytic performance. Herein, a specially designed composite based on MIL-125-NH and BiVO was prepared and used for wastewater treatment. In the hybrid MIL-125-NH@BiVO, MIL-125-NH was uniformly dispersed on the BiVO surface. There is a high affinity between MIL-125-NH and BiVO due to the lattice defects. Under visible light irradiation, the catalytic activity of the as-prepared composite was evaluated by the degradation of various dyes such as malachite green, crystal violet, methylene blue, and Congo red. Nearly 98.7, 99.1, and 41.0% of the initial MG, MB and Cr(VI) were respectively removed over the optical sample of BVTN-5, demonstrating that the hybrid holds great promise for practical applications. Moreover, the composites can be recycled and reused with good stability after five consecutive cycles. The mechanism was proposed and discussed in detail. This work will shed light on the construction of MOF-based composites for efficient photocatalysis.
设计和构建具有异质结构的光催化剂是提高催化性能的一种可行且有效的方法。在此，制备了一种基于MIL-125-NH和BiVO的特殊设计复合材料，并将其用于废水处理。在混合的MIL-125-NH@BiVO中，MIL-125-NH均匀分散在BiVO表面。由于晶格缺陷，MIL-125-NH与BiVO之间具有高亲和力。在可见光照射下，通过降解孔雀石绿、结晶紫、亚甲基蓝和刚果红等各种染料来评估所制备复合材料的催化活性。在BVTN-5的光学样品上，分别去除了近98.7%、99.1%和41.0%的初始MG、MB和Cr(VI)，表明该混合物在实际应用中具有巨大潜力。此外，该复合材料在连续五个循环后可以回收再利用，且稳定性良好。对其机理进行了详细的提出和讨论。这项工作将为构建用于高效光催化的基于MOF的复合材料提供启示。
