【摘 要】
：
Hydrogen detection has a fundamental significance for safely using Hydrogen energy.Optical type sensor, like gasochromic sensor, has a favorable prospect of
【机 构】
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ShanghaiKeyLaboratoryofSpecialArtificial,MicrostructureMaterialsandTechnology,TongjiUniversity,Shang
【出 处】
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2016’中国溶胶-凝胶学术研讨会暨国际论坛
论文部分内容阅读
Hydrogen detection has a fundamental significance for safely using Hydrogen energy.Optical type sensor, like gasochromic sensor, has a favorable prospect of development due to its higher security and sensitivity.In this work, WO3-TiO2-SiO2 sol has been prepared for dip coating optical hydrogen-sensing thin films.FT-IR, SEM, TEM, AFM and UV-VIS-NIR spectroscopy have been used to analyze the compound films and its gasochromic properties.Though TiO2 did not doping into the film, it can form WO3 particles during the doping stage in sol.These particles have well spread on the films and improved the roughness of the films.The results of UV-VIS-NIR spectroscopy indicated that TiO2-doped films show better sensitivity than WO3-SiO2 films.The improvement of sensitivity may be attributed to the existence of WO3 particles and high roughness of the films.
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