Hebei Key Laboratory of Inorganic Nano-Materials, College of Chemistry and Materials Science, National Experimental Chemistry Teaching Center, Hebei Normal University, Shijiazhuang, 050024, People's Republic of China.
Environ Sci Pollut Res Int. 2022 Mar;29(11):16371-16382. doi: 10.1007/s11356-021-16942-4. Epub 2021 Oct 14.
The TiC and g-CNNS were obtained first, and the CdS/TiC/g-CNNS Z-scheme composites were prepared via a facile hydrothermal synthesis, and their photocatalytic properties were investigated. The g-CNNS with a high surface area displayed higher adsorption and degradation capacity. Compared with TiC/g-CNNS and CdS, the visible light photocatalytic activity of CdS/TiC/g-CNNS composites was improved. The as-synthesized CTN-4:1 composite exhibited outstanding photocatalytic performance for degradation of orange II, approximately 3.2 and 10.7 times higher than that of TiC/g-CNNS and CdS, respectively. The fabrication of CdS/TiC/g-CNNS Z-scheme heterostructure using TiC as electron transfer medium improved the separation ability of the photoinduced e-h pairs, thereby leading to the improvement of visible light-driven photocatalytic activity. This finding provides new insights into the construction of high efficiency Z-scheme heterostructure photocatalyst.
首先制备了 TiC 和 g-CNNS，然后通过简便的水热合成法制备了 CdS/TiC/g-CNNS Z 型复合物，并研究了其光催化性能。具有高比表面积的 g-CNNS 表现出更高的吸附和降解能力。与 TiC/g-CNNS 和 CdS 相比，CdS/TiC/g-CNNS 复合材料的可见光光催化活性得到了提高。合成的 CTN-4:1 复合材料对橙色 II 的降解表现出优异的光催化性能，分别是 TiC/g-CNNS 和 CdS 的约 3.2 倍和 10.7 倍。使用 TiC 作为电子传输介质构建 CdS/TiC/g-CNNS Z 型异质结构，提高了光生电子空穴对的分离能力，从而提高了可见光驱动的光催化活性。这一发现为构建高效 Z 型异质结构光催化剂提供了新的思路。
