کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7140080 | 1462023 | 2018 | 47 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Oxygen vacancy engineering for enhanced sensing performances: A case of SnO2 nanoparticles-reduced graphene oxide hybrids for ultrasensitive ppb-level room-temperature NO2 sensing
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Oxygen vacancy engineering for enhanced sensing performances: A case of SnO2 nanoparticles-reduced graphene oxide hybrids for ultrasensitive ppb-level room-temperature NO2 sensing Oxygen vacancy engineering for enhanced sensing performances: A case of SnO2 nanoparticles-reduced graphene oxide hybrids for ultrasensitive ppb-level room-temperature NO2 sensing](/preview/png/7140080.png)
چکیده انگلیسی
In this paper, SnO2 nanoparticles (NPs) decorated reduced graphene oxide hybrids with abundant vacancies (designated as SnO2-RGO-OVs) have been successfully prepared by a combined hydrothermal synthesis and chemical solution deposition method. It is found that high density SnO2 NPs with the size of 3-5â¯nm are uniformly distributed on the surface of RGO nanosheets. Most importantly, SnO2-RGO-OVs hybrids exhibit excellent room-temperature NO2 sensing properties with the low detection limit of 50 ppb. When SnO2-RGO-OVs-based sensor was exposed to 1â¯ppm NO2, the response is 3.80 and response time and recovery time are 14â¯s and 190â¯s, respectively. These sensing performances are superior to those of most reported room-temperature NO2 sensors based on RGO-based materials and other materials. The excellent sensing performances of SnO2-RGO-OVs hybrids can be attributed to their specific structure, e.g., RGO that could facilitate transferring carriers during sensing progress, and abundant OVs that could facilitate adsorption of more NO2 molecules onto SnO2 NPs in SnO2-RGO-OVs hybrids.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 266, 1 August 2018, Pages 812-822
Journal: Sensors and Actuators B: Chemical - Volume 266, 1 August 2018, Pages 812-822
نویسندگان
Ziying Wang, Tong Zhang, Tianyi Han, Teng Fei, Sen Liu, Geyu Lu,