کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7143968 | 1462060 | 2016 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Self-assembled hierarchical Au-loaded In2O3 hollow microspheres with superior ethanol sensing properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Despite the significant advancement in preparing metal oxide hollow structures, most approaches rely on template-based multistep procedures for tailoring the interior structure. In this work, hierarchical self-assembled Au-loaded In2O3 hollow microspheres have been synthesized via a template-free hydrothermal method. The growth mechanism of this complex nanostructure was proposed based on the characterization results of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), the Brunauer-Emmett-Teller (BET) approach, TG-DSC analysis and X-ray photoelectron spectroscopy (XPS). With the large surface area, highly porous structure of the hierarchical and hollow architectures, and catalytic activity of Au nanoparticles, these unique hierarchical Au-loaded In2O3 hollow microspheres exhibit superior gas-sensing performances. The response value to 100 ppm ethanol is 185 at an operating temperature of 320 °C. It is expected this Au nanoparticles-functionalized hierarchically porous and hollow nanostructure may provide a new pathway to develop advanced nanomaterials for applications in gas sensors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 231, August 2016, Pages 245-255
Journal: Sensors and Actuators B: Chemical - Volume 231, August 2016, Pages 245-255
نویسندگان
Su Zhang, Peng Song, Huihui Yan, Qi Wang,