کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7149251 | 1462117 | 2012 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrazine chemical sensing by modified electrode based on in situ electrochemically synthesized polyaniline/graphene composite thin film
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The modified electrode of polyaniline/graphene (PANI/Gr) composites was prepared by in situ electrochemical synthesis of aniline monomer and graphene oxide in hydrochloric acid. The PANI/Gr composites modified electrodes were utilized for fabricating the highly sensitive, reliable and reproducible hydrazine chemical sensor. The PANI/Gr composites modified electrodes were extensively characterized by morphological, structural and the optical properties. The Raman studies revealed that PANI/Gr composite modified electrode possessed both Gr and PANI Raman bands, suggested the Ï-Ï* electron interaction between CN+ of PANI and carboxylate group of Gr. The sensing performance of the fabricated chemical sensor toward the detection of hydrazine was measured by a two electrode current-voltage (I-V) technique. A very high sensitivity of â¼32.54Â ÃÂ 10â5Â AÂ cmâ2Â mMâ1 and reasonable detection limit of â¼15.38Â mM with correlation coefficient (R) of 0.78578 and short response time (10Â s) were observed by PANI/Gr composites modified thin film electrode.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 173, October 2012, Pages 177-183
Journal: Sensors and Actuators B: Chemical - Volume 173, October 2012, Pages 177-183
نویسندگان
Sadia Ameen, M. Shaheer Akhtar, Hyung Shik Shin,