کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7145701 1462074 2015 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of the deposition parameters of graphene oxide nanofilms on the kinetic characteristics of the SAW humidity sensor
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Influence of the deposition parameters of graphene oxide nanofilms on the kinetic characteristics of the SAW humidity sensor
چکیده انگلیسی
Symmetric surface acoustic wave (SAW) atomizer was used to deposit graphene oxide (GO) nanofilms from microdroplets of the aqueous GO dispersion onto the surface of the SAW humidity sensors. The sensors with the deposited GO films were tested in a wide range of relative humidity and showed the amplitude of the response in the range of 1-40 kHz sufficient for the majority of applications. The kinetics of the adsorption of water molecules was modeled using the assumption that two independent first order adsorption processes take place. Saturation amplitudes and rate coefficients for both processes were experimentally evaluated using LSQ fitting of the sensor response in the time domain for the films obtained by different number of depositions. The mechanism of the adsorption of water molecules to the GO flakes is proposed and discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 217, 1 October 2015, Pages 88-91
نویسندگان
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