NTT Hi-Tech Institute, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, Ward 13, District 4, Ho Chi Minh City, Viet Nam.
Department of Chemical Engineering, School of Biotechnology, International University, Ho Chi Minh City, Viet Nam; Vietnam National University, Ho Chi Minh City, Viet Nam.
Chemosphere. 2021 Aug;276:130154. doi: 10.1016/j.chemosphere.2021.130154. Epub 2021 Mar 5.
Photocatalytic activity is a feasible solution to tackle environmental pollution caused by industrial pollutants. In this research, TiC-TiO composite with a unique structure was fabricated successfully via a hydrothermal method. Especially, the in-situ transformation of TiO from TiC MXene creates an intimate heterostructure, which leads to prolonging separation and migration of charged carriers. Thus, this TiC-TiO composite enhances effectively methyl orange (MO) degradation efficiency (around 99%) after 40 light-exposed minutes. Besides, the optimal concentration of MO solution was estimated at 40 mg/L and TiC-TiO photocatalyst also exhibited good stability after five runs. Moreover, the radical trapping test and the MO photodegradation mechanism over TiC-TiO system were also demonstrated. This research illustrates the potential of MXenes as effective co-catalysts for photocatalysis and extends the applications of two-dimensional materials.
光催化活性是解决工业污染物引起的环境污染的一种可行方法。在这项研究中，通过水热法成功制备了具有独特结构的 TiC-TiO 复合材料。特别是，TiO 通过 TiC MXene 的原位转化形成了紧密的异质结构，这导致载流子的分离和迁移得到了延长。因此，这种 TiC-TiO 复合材料在 40 分钟的光照后有效提高了甲基橙（MO）的降解效率（约 99%）。此外，MO 溶液的最佳浓度估计为 40mg/L，TiC-TiO 光催化剂在经过五次运行后也表现出良好的稳定性。此外，还对 TiC-TiO 体系中的自由基捕获试验和 MO 光降解机制进行了证明。这项研究说明了 MXenes 作为光催化剂的有效共催化剂的潜力，并扩展了二维材料的应用。
