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首页> 外文期刊>Chemistry: A European journal >From nanorods to atomically thin wires of anatase TiO_2: Nonhydrolytic synthesis and characterization
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From nanorods to atomically thin wires of anatase TiO_2: Nonhydrolytic synthesis and characterization

机译：从纳米棒到锐钛矿型TiO_2的原子细线：非水解合成和表征

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摘要

A nonhydrolytic two-step chemical process has been developed to synthesize ultrathin, nearly monodisperse TiO_2 (anatase) wires with tunable diameters of 5 nm to approximately 4 ?, reaching the atomic length scale. The high-quality anatase titania atomically thin wires can be doped and stabilized with nitrogen species by introducing suitable nitrogen-containing mole-cules. The ultrathin wires, particularly the atomically thin wires, as well as the precursor, have been thoroughly characterized by an extensive series of structural, spectroscopic, and other techniques. Possible formation mechanisms for the rods and the wires are proposed on the basis of experimental results obtained under varying reaction conditions. Also demonstrated are the pronounced effects of size and Ndoping on the electronic, optical, and phononic properties of the anatase titania wires in the smallest size regime.
机译：已经开发出一种非水解的两步化学过程，以合成可调谐直径为5 nm至约4？的超薄，几乎单分散的TiO_2（锐钛矿）线，达到原子长度尺度。通过引入合适的含氮分子，可以用氮物种掺杂和稳定高质量的锐钛矿型二氧化钛原子细线。超细金属丝，特别是原子细金属丝以及母体，已经通过一系列广泛的结构，光谱和其他技术得到了充分的表征。根据在不同反应条件下获得的实验结果，提出了杆和线材可能的形成机理。还证明了尺寸和N掺杂在最小尺寸范围内对锐钛矿型二氧化钛丝的电子，光学和声子性能的显着影响。

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