Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan.
Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishi-waseda, Shinjuku-ku, Tokyo, 169-0051, Japan.
Chemistry. 2023 Jun 13;29(33):e202300218. doi: 10.1002/chem.202300218. Epub 2023 May 2.
The hybrid composed of anisotropic niobate layers modified with MoC nanoparticles is synthesized by multistep reactions. The stepwise interlayer reactions for layered hexaniobate induce selective surface modification at the alternate interlayers, and the following ultrasonication leads to the formation of double-layered nanosheets. The further liquid phase MoC deposition with the double-layered nanosheets leads to the decoration of MoC nanoparticles on the surfaces of the double-layered nanosheets. The new hybrid can be regarded as a stacking of the two layers with anisotropically modified nanoparticles. The relatively high temperature in the MoC synthesis causes partial leaching of the grafted phosphonate groups. The exposed surface of the niobate nanosheets due to the partial leaching may interact with MoC to succeed in the hybridization. The hybrid after heating exhibits photocatalytic activity, indicating that this hybridization method can be useful for hybrid synthesis of semiconductor nanosheets and co-catalyst nanoparticles toward photocatalytic application.
通过多步反应合成了用 MoC 纳米粒子修饰的各向异性铌酸盐层的杂化材料。层状六铌酸盐的分步层间反应在交替层间诱导选择性表面修饰，随后的超声处理导致双层纳米片的形成。进一步用双层纳米片进行液相 MoC 沉积，导致 MoC 纳米粒子在双层纳米片的表面上修饰。这种新的杂化材料可以看作是具有各向异性修饰纳米粒子的两层的堆叠。MoC 合成过程中的较高温度导致接枝膦酸酯基团的部分浸出。由于部分浸出，铌酸盐纳米片的暴露表面可能与 MoC 相互作用，从而成功地进行杂化。加热后的杂化物表现出光催化活性，表明这种杂化方法可用于半导体纳米片和共催化剂纳米粒子的杂化合成，以应用于光催化。
