کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7140944 | 1462029 | 2018 | 44 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rational synthesis of molybdenum disulfide nanoparticles decorated reduced graphene oxide hybrids and their application for high-performance NO2 sensing
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
In this work, we have reported a novel NO2 sensor using molybdenum disulfide nanoparticles (MoS2 NPs) decorated RGO (MoS2-RGO) hybrids as sensing materials, where MoS2-RGO hybrids were prepared by a two-step wet-chemical method. Firstly, MoS2 NPs prepared by modified liquid exfoliation method from bulky MoS2 powder. Then, MoS2-RGO hybrids were obtained by self-assembly of MoS2 NPs and GO nanosheets, followed by a facile hydrothermal treatment progress. The combined characterizations indicate that MoS2 NPs with the size of 3-5â¯nm are uniformly dispersed on RGO nanosheets. Most importantly, the sensor based on MoS2-RGO hybrids could detect NO2 at room temperature. To further improve sensing performances, especially response and recovery rate, sensing properties are further examined by increasing the operation temperature to 160â¯Â°C. It is notably seen that MoS2-RGO-based NO2 sensor not only shows improved sensitivity to NO2 compared to pure RGO-based sensor, but also exhibits fast response and recovery characteristics (response time and recovery time are 8â¯s and 20â¯s toward 3â¯ppm NO2). This work paves a new way for application of MoS2 and RGO in chemical sensors, providing an effective method for fabrication of NO2 sensors with high sensitivity and fast response/recovery rate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 260, 1 May 2018, Pages 508-518
Journal: Sensors and Actuators B: Chemical - Volume 260, 1 May 2018, Pages 508-518
نویسندگان
Ziying Wang, Tong Zhang, Chen Zhao, Tianyi Han, Teng Fei, Sen Liu, Geyu Lu,