| 一维纳米材料Cs0.2WO3和W18O49长度与红外吸收关联性的Mie散射理论推导及实验验证 |
| Mie Scattering Theory Deduction and Experimental Verification of Correlation Between Length of One-Dimensional Nanomaterials Cs0.2WO3 and W18O49 and Infrared Absorption |
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| 摘要: 研究表明二元、三元钨基氧化物的红外吸收性能具有尺寸和形貌依赖性，但还没有普适性的物理学机理及计算方法。本工作基于Mie散射理论，推导了一维材料的长度与光吸收性能之间的关系，通过理论推导计算和实验验证，探究了纳米钨基氧化物的红外吸收性能与颗粒长度的关联性。首先，基于Mie散射理论的推演和计算，揭示了增加纳米Cs0.2WO3和W18O49材料长度可适度提高其近红外吸收性能的规律。其次，测试了合成的不同长度Cs0.2WO3纳米棒和W18O49纳米线的红外吸收性能，结果与理论计算及模拟相吻合。其中在2 500~20 000 nm波长范围内Cs0.2WO3纳米棒和W18O49纳米线随长度的变化趋势不同，Cs0.2WO3纳米棒的红外吸收性能随长度的增加而增加，而W18O49纳米线的红外吸收性能随长度的增加而减弱。Cs0.2WO3纳米棒和W18O49纳米线的光热效应均随长度的增加而增加，增幅分别达18.5%和12.7%，再次验证了长度效应。 |
| 关键词: Mie散射 一维 红外吸收 Cs0.2WO3 W18O49 |
| 基金项目: 国家自然科学基金（No.51772013）资助。 |
| Abstract: The research results show size- and shape-dependent infrared absorption properties for binary and ternary tungsten-oxides. However, there is no universal theory in both physical principle and calculation method for binary and ternary tungsten-oxides. In this study, the correlation between the optical absorption characteristics and onedimensional material length was deduced based on Mie scattering theory, and the correlation of tungsten oxide based materials was studied by means of theoretical deductions and experimental verifications. Firstly, from a perspective of deduction and calculation based on Mie scattering theory reveal that increasing the length of both nanoCs0.2WO3 and W18O49 can improve their near-infrared absorption performance. Secondly, the near-infrared absorption performance of synthesized Cs0.2WO3 nanorods and W18O49 nanowires with different lengths was tested. The experimental data is consistent with the theoretical calculations and simulation results. Cs0.2WO3 nanorods and W18O49 nanowires have different trends with particle length between 2 500 and 20 000 nm, and the infrared absorption properties of Cs0.2WO3 nanorods were proportional to particle length. Finally, the photothermal effects of Cs0.2WO3 nanorods and W18O49 nanowires were tested. And the amplification of temperature reached 18.5% and 12.7% with the increase of particle length for both nano-tungsten oxides, respectively. |
| Keywords: Mie scattering one-dimensional infrared absorption Cs0.2WO3 W18O49 |
| 投稿时间：2021-03-04 修订日期：2021-07-16 |
| 摘要点击次数: 821 |
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| 熊远鹏,孔繁东,李锐星.一维纳米材料Cs0.2WO3和W18O49长度与红外吸收关联性的Mie散射理论推导及实验验证[J].无机化学学报,2021,37(10):1764-1772. |
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