کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4767418 | 1424129 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrosynthesized polypyrrole/zeolite composites as solid contact in potassium ion-selective electrode
ترجمه فارسی عنوان
کامپوزیت پلی پیررول / زئولیت الکتروسیتیز شده به عنوان جامد در الکترودهای انتخابی پتاسیم
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Polypyrrole/zeolite composites were studied as solid contact material in potassium ion-selective electrodes (K+-ISEs). Proton-exchanged Zeolite Socony Mobil-5 (H-ZSM-5) with SiO2/Al2O3 ratios of 23, 80 and 280 were electrochemically synthesized with polypyrrole (PPy). The anionic groups on the zeolite framework functioned as the counter ions for PPy during the reaction. H-ZSM-5 particles were observed on the surface as well as inside the composite films. PPy/H-ZSM-5 composites gave a similar cyclic voltammogram as PPy doped with chloride, PPy(Clâ). The hydrophobicity of the composites decreased in the order PPy/H-ZSM-5-23Â >Â PPy/H-ZSM-5-80Â >Â PPy/H-ZSM-5-280. The redox capacitance of the composite was better utilized than that of PPy(Clâ) after they were coated with a plasticized PVC membrane. PPy/H-ZSM-5 composite-based K+-ISEs exhibited similar potential stability as the PPy(Clâ)-based K+-ISE. However, when compared with the PPy(Clâ)-based K+-ISE, the detection limit of PPy/H-ZSM-5 composite-based K+-ISEs was enhanced after a long-term conditioning.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 228, 20 February 2017, Pages 66-75
Journal: Electrochimica Acta - Volume 228, 20 February 2017, Pages 66-75
نویسندگان
Kai Yu, Ning He, Narendra Kumar, NianXing Wang, Johan Bobacka, Ari Ivaska,