| 溶胶凝胶法制备Pt/WO3氢气敏感材料的研究 |
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| 引用本文： | 杨志,杨明红,代吉祥,曹坤,廖汉生,张鹏程.溶胶凝胶法制备Pt/WO3氢气敏感材料的研究[J].光子学报,2014,0(9):1036-1040. |
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| 作者姓名： | 杨志 杨明红 代吉祥 曹坤 廖汉生 张鹏程 |
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| 作者单位： | 1. 武汉理工大学 光纤传感技术国家工程实验室, 武汉 430070;2. 中国工程物理研究院, 四川 绵阳 621907 |
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| 基金项目： | 中国工程物理研究院表面物理与化学国家重点实验室开放基金(No.SPC201005)资助 |
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| 摘 要： | 采用溶胶凝胶法制备纳米级WO3,掺杂不同含量的氯铂酸并混合搅拌均匀,再进行热处理,将所得粉体均匀涂覆在光纤光栅周围,制备出具有氢敏特性的光纤光栅传感器.实验中,通过改变氯铂酸掺杂量和热处理温度并进行XRD物相分析得:随着Pt:W的降低以及热处理温度的升高,WO3的结晶度不断提高;通入不同浓度的氢气对传感器进行氢敏性能测试发现,经过300℃热处理,Pt:W为1:9时,对4%浓度的氢气能达到15 s的响应速度,最高有140 pm的中心波长变化,多次重复通氢气,重复性良好;当热处理温度达到500℃时,材料对氢气已经不敏感.
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| 关 键 词： | 离子交换 Pt/WO3 晶体结构 光纤光栅 氢敏 |
| 收稿时间： | 2012-01-19 |
Characteristics of Pt/WO3 Hydrogen Sensitive Material Prepared by Sol-gel Method |
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| YANG Zhi,YANG Ming-hong,DAI Ji-xiang,CAO Kun,LIAO Han-sheng,ZHANG Peng-cheng.Characteristics of Pt/WO3 Hydrogen Sensitive Material Prepared by Sol-gel Method[J].Acta Photonica Sinica,2014,0(9):1036-1040. |
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| Authors: | YANG Zhi YANG Ming-hong DAI Ji-xiang CAO Kun LIAO Han-sheng ZHANG Peng-cheng |
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| Institution: | 1. Centre for Optical Sensing, Wuhan University of Technology, Wuhan 430070, China;2. China Academy Engineering Physics, Mianyang, Sichuan 621907, China |
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| Abstract: | Nanostructured WO3 mixed with chloroplatinic acid was prepared by sol-gel method. Fiber Bragg grating was coated with the hybrid material. The as-prepared powder was mixed with different ratio of chloroplatinic acid and annealed at different temperatures and their structures were characterized by X-ray diffraction. The results show that the crystallinity of WO3 increases with the decrease of chloroplatinic acid and the increase of thermal treating temperature. The experiment demonstrates that after being annealed under 30℃ with the Pt:W ratio of 1:9, the sensor has good repeatability, can reach the response speed of 15 s to 4% Hz, and has 140 pm central wavelength change. The sensor shows no sensibility with further increase of temperature up to 500℃. |
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| Keywords: | Ion exchange Pt/WO3 Crystal structure FBG Hydrogen sensitivity |
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