Fabrication of Mo-Doped WO₃ Nanorod Arrays on FTO Substrate with Enhanced Electrochromic Properties.
Fabrication of Mo-Doped WO₃ Nanorod Arrays on FTO Substrate with Enhanced Electrochromic Properties.
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在 FTO 基底上制备具有增强电致变色性能的 Mo 掺杂 WO3 纳米棒阵列
DOI：
10.3390/ma11091627
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发表时间：
2018-09-05
期刊：
影响因子：
--
通讯作者：
Zheng F
中科院分区：
文献类型：
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作者：
Wang B;Man W;Yu H;Li Y;Zheng F
采用水热法在掺氟氧化锡（FTO）衬底上制备了定向生长的Mo修饰的WO 3纳米棒阵列（WNRA）。研究了Mo掺杂、水热反应时间和水热温度对WNRA形貌和电致变色性能的影响。采用扫描电子显微镜（SEM）、能谱仪（EDS）、X射线衍射仪（XRD）、X射线光电子能谱仪（XPS）和计时电流法等技术对合成的WNRA进行了表征。结果表明，所制备的WNRA的平均粒径在30 ~ 70 nm之间。在修饰过程中，所制备的WNRA的生长密度降低，表面变得粗糙。然而，在180 °C下合成5 h的Mo/W摩尔比为1：40的修饰的Mo/WNRA表现出比单一WNRA更好的电致变色性能。它们表现出高的光学调制（61.7%）、快速的漂白/着色响应时间（3 s/9 s）、高的着色效率值（73.1 cm 2/C）和良好的循环稳定性。
Well-oriented and crystalline WO3 nanorod arrays (WNRAs) decorated with Mo were synthesized on fluorine doped tin oxide (FTO) substrate by the hydrothermal method. The effects of Mo doping, hydrothermal reaction time, and hydrothermal temperature on the morphologies and electrochromic properties of as-prepared WNRAs were studied thoroughly. Scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and chronoamperometry techniques were used to characterize the structures and properties of obtained WNRAs. The results demonstrate that the average diameter of the as-prepared WNRAs ranged from 30 to 70 nm. During the decoration of Mo on the WNRAs, the growth density of as-prepared WNRAs decreased and the surfaces became rough. However, the decorated Mo on WNRAs synthesized at 180 °C for 5 h with a Mo/W mole ratio of 1:40 exhibited better electrochromic properties than single WNRAs. They exhibited high optical modulation (61.7%), fast bleaching/coloring response times (3 s/9 s), high coloration efficiency values (73.1 cm2/C), and good cycling stability.