Photo- & radio-chromic iron-doped tungstic acids fabricated via submerged photosynthesis
Photo- & radio-chromic iron-doped tungstic acids fabricated via submerged photosynthesis
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DOI：
10.1016/j.optmat.2021.111966
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发表时间：
2022-02
影响因子：
3.9
通讯作者：
Shuntaro Murakami;L. Zhang;Melbert Jeem;Kazumasa Okamoto;Y. Nakagawa;T. Shibayama;M. Ohnuma;Seiichi Watanabe
中科院分区：
文献类型：
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作者：
Shuntaro Murakami;L. Zhang;Melbert Jeem;Kazumasa Okamoto;Y. Nakagawa;T. Shibayama;M. Ohnuma;Seiichi Watanabe
由有机和无机材料组成的基于铬的材料检测已经在传感器和智能窗口中以各种方式被利用，因为这些材料的光学性质可以可逆地改变。高能辐射光束可能通过电离和非电离效应诱导变色，但能够探测各种类型辐射光束的固有变色材料尚未得到很好的了解。要用于高能辐射探测，材料必须是安全的；在辐射下稳定，表现出很少的辐射损伤和放射性；并以各种物质形式使用。在本研究中，我们首次通过与过氧化氢的水下光合作用制备了Fe-WO3·nH2O （n = 0.33, 1,2）的铁掺杂钨酸，可以作为铬溶液用于检测各种辐射光束和紫外线非电离辐射。Fe- wo3·nH2O中Fe和W离子的偶联氧化还原反应被认为是其变色机理。所制备的铬溶液以含有纳米颗粒的水溶液形式存在，但可以很容易地糊化或片状，并以各种形式用作检测材料。因此，我们的铁掺杂钨酸铬溶液适合于综合辐射检测。
Chromism-based detection by materials composed of both organic and inorganic materials has been exploited in various ways in sensors and smart windows because the optical properties of such materials can be reversibly changed. High-energy radiation beams may induce chromism via both ionizing and non-ionizing effects, but inherently chromic materials that can detect various types of radiation beams are not well understood. To be useful for high-energy radiation detection, a material must be safe; stable under radiation, exhibiting little radiation damage and radioactivation; and useable in various material forms. In the present study, we show that iron-doped tungstic acids of Fe-WO3·nH2O (n = 0.33, 1, 2), which is for the first time fabricated by submerged photosynthesis with hydrogen peroxide, can be used as a chromic solution to detect various radiation beams as well as ultraviolet non-ionizing radiation. The coupling redox reactions between Fe and W ions in Fe-WO3·nH2O have been proposed as the chromic mechanism. The prepared chromic solution exists as an aqueous liquid containing nanoparticles but can be easily gelatinized or sheeted and used in various forms as a detection material. Thus, our chromic solution of iron-doped tungstic acids is suitable for comprehensive radiation detection.