具有不同结晶度的MoO纳米复合材料的选择性和可调近红外及可见光透射率
Selective and Tunable Near-Infrared and Visible Light Transmittance of MoO Nanocomposites with Different Crystallinity.
作者信息
Li Ning, Li Yamei, Sun Guangyao, Ma Yining, Chang Tianci, Ji Shidong, Yao Heliang, Cao Xun, Bao Shanhu, Jin Ping
机构信息
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Dingxi 1295, Changning, Shanghai, 200050, China.
University of Chinese Academy of Sciences, Beijing, 100049, China.
出版信息
Chem Asian J. 2017 Jul 18;12(14):1709-1714. doi: 10.1002/asia.201700437. Epub 2017 Jun 21.
In this Communication, we report MoO nanocomposites in which the near-infrared and visible light transmittance can be selectively modulated through the crystallinity. The MoO nanocomposites were fabricated by a hydrothermal method, and their optical properties were characterized by UV-Vis spectrometer. The obtained results proved the possibility to tune the nanocomposite's optical properties in the UV/Visible spectral region: crystalline MoO mainly regulates the near-infrared range (800-2600 nm), and amorphous MoO mainly changes the visible range from 350 nm to 800 nm and MoO , with semi-crystalline structures mainly modulating around 800-1000 nm. These kinds of optical modulations could be attributed to small polar absorption, free electron absorption and plasmon absorption according to different crystallinity. Our work may create new possibilities for future applications such as photochromism, photocatalysis, and electrochromism.
在本通讯中，我们报道了氧化钼纳米复合材料，其中近红外和可见光透过率可通过结晶度进行选择性调制。通过水热法制备了氧化钼纳米复合材料，并用紫外-可见光谱仪对其光学性能进行了表征。所得结果证明了在紫外/可见光谱区域调节纳米复合材料光学性能的可能性：结晶态氧化钼主要调节近红外范围（800 - 2600 nm），非晶态氧化钼主要改变350 nm至800 nm的可见光范围，而具有半晶态结构的氧化钼主要在800 - 1000 nm左右进行调制。根据不同的结晶度，这些光学调制可归因于小极性吸收、自由电子吸收和等离子体吸收。我们的工作可能为光致变色、光催化和电致变色等未来应用创造新的可能性。
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