کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5010008 1462047 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impact of reduced graphene oxide on the ethanol sensing performance of hollow SnO2 nanoparticles under humid atmosphere
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Impact of reduced graphene oxide on the ethanol sensing performance of hollow SnO2 nanoparticles under humid atmosphere
چکیده انگلیسی


- RGO-SnO2 nanocomposite was obtained by a one-pot microwave-assisted solvothermal method.
- Nanocomposite showed an enhanced ethanol response than pure SnO2 under dry and humid conditions.
- Excellent performance was due to the RGO/SnO2 junction and hollow nature of SnO2.
- RGO-SnO2 nanocomposite could be used for ethanol detection under humid conditions.

The interference of humidity is a key factor to be considered in metal oxide semiconductors gas sensing performance. However, an efficient gas detection under humid conditions is a challenge. Herein, we report the effect of reduced graphene oxide (RGO) on volatile organic compounds (VOCs) sensing performance of hollow SnO2 nanoparticles (NPs) under wet atmosphere. For this purpose, RGO-SnO2 nanocomposite was obtained by a one-pot microwave-assisted solvothermal synthesis. The sensing tests for VOCs were conducted under dry air and at a relative humidity (RH) between 24 and 98%. The samples exhibited better response toward ethanol than to other VOCs such as acetone, benzene, methanol, m-xylene, and toluene, at the optimum operating temperature of 300 °C. Furthermore, RGO-SnO2 nanocomposite showed an enhanced ethanol response in comparison with pure hollow SnO2 NPs. Even under 98% of RH, the RGO-SnO2 nanocomposite showed a response of 43.0 toward 100 ppm of ethanol with a response time of 8 s. The excellent sensor performance is related to the hollow structure of SnO2 NPs, and the heterojunction between RGO and SnO2. Therefore, the RGO content can be a promising approach to minimize the humidity effect on SnO2 ethanol sensing performance.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 244, June 2017, Pages 466-474
نویسندگان
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