کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5009077 1462039 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Studies on NH3 gas sensing by zinc oxide nanowire-reduced graphene oxide nanocomposites
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Studies on NH3 gas sensing by zinc oxide nanowire-reduced graphene oxide nanocomposites
چکیده انگلیسی


- Ammonia sensors based on zinc oxide nanowire-reduced graphene oxide nanocomposites have been fabricated.
- The sensors exhibit excellent response, fast response time, and full recovery at room temperature.
- The sensors show excellent selectivity toward ammonia.

ZnO nanowire-reduced graphene oxide nanocomposites have been prepared and used to detect ammonia at room temperature successfully. The nanocomposites are synthesized through hybridization of ZnO nanowires and graphene oxide sheets, which have been produced in large scale through mechanical mixing and low-temperature thermal reduction process. The micro ammonia sensors based on the as-prepared nanocomposites are subsequently constructed by dip-dropping method. The resultant device exhibits excellent response (∼19.2%) to NH3 at room temperature, which is much better than pure reduced graphene oxide based gas sensors. It is revealed that ZnO nanowires can provide pathways for electron transfer on reduced graphene oxide sheets, thus the ZnO nanowire-reduced graphene oxide nanocomposites based sensors show excellent overall sensing performance with high response, short response and recovery time, good stability and excellent selectivity. Moreover, the sensor has a very small size and low power consumption, which are critical for system integration and portable equipment. Our work can hold a great potential for realistic applications in ammonia detection fields.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 252, November 2017, Pages 284-294
نویسندگان
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