کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
751511 | 895237 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced CO sensing characteristics of hierarchical and hollow In2O3 microspheres
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhanced CO sensing characteristics of hierarchical and hollow In2O3 microspheres Enhanced CO sensing characteristics of hierarchical and hollow In2O3 microspheres](/preview/png/751511.png)
چکیده انگلیسی
Hierarchical and hollow In2O3 microspheres were prepared by a solvothermal self-assembly reaction and their CO sensing characteristics were compared to those of an agglomerated counterpart. Upon exposure to 10–50 ppm CO at 400 °C, the gas responses (Ra/Rg; Ra: resistance in air, Rg: resistance in gas) of the hierarchical and hollow structures were 1.6–2.7 times higher than that of the agglomerated sample. In addition, their 90% responses and recovery speeds were 23 times and 7.7 times higher, respectively. Their significantly improved gas responses and sensing/recovery kinetics were concluded to be related to the nanoporous and well-aligned nanostructures, which allow effective and rapid gas diffusion toward the sensing surfaces.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 138, Issue 2, 6 May 2009, Pages 497–503
Journal: Sensors and Actuators B: Chemical - Volume 138, Issue 2, 6 May 2009, Pages 497–503
نویسندگان
Kwon-Il Choi, Hae-Ryong Kim, Jong-Heun Lee,