Abstract Unusual synthesis of microscale safflowers consisting of TiO2/Ti3C2 heterostructure nanorods was developed. This unique structure was realized by the sequential in-body transformation, starting from two-dimensional Ti3C2Tx MXene. For the transformation, hydrothermal oxidation and alkalization, ion exchange, and heat treatment were elaborately combined in a stepwise manner. Undergoing those steps, the layer-structured MXene flakes were broken into nanoparticles, and TiO2/Ti3C2 nanorods grew radially from the nanoparticles. It was revealed that the heat treatment conditions had a significant effect on the morphology, structural components, and properties of the heterostructures. Unlike Ti3C2Tx MXene, the TiO2/Ti3C2 heterostructures synthesized at optimal conditions behaved like a semiconductor. The superb photocatalytic efficiency of the heterostructures was also demonstrated.

中文翻译：

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由二维 Ti3C2 MXene 引发的红花状 TiO2/Ti3C2 异质结构的异常合成

摘要 开发了由 TiO2/Ti3C2 异质结构纳米棒组成的微型红花的不寻常合成。这种独特的结构是通过连续的体内转化实现的，从二维 Ti3C2Tx MXene 开始。在转化过程中，水热氧化和碱化、离子交换和热处理是逐步精心结合的。经过这些步骤，层状结构的 MXene 薄片被分解成纳米颗粒，TiO2/Ti3C2 纳米棒从纳米颗粒中呈放射状生长。结果表明，热处理条件对异质结构的形貌、结构成分和性能有显着影响。与 Ti3C2Tx MXene 不同，在最佳条件下合成的 TiO2/Ti3C2 异质结构表现得像半导体。